A lot of people are asking for the right to repair. Many people believe products should last longer, and therefore when broken, they should be repaired. This requires products to be designed for repair as well as support for repairers of all kinds. The goal of right-to-repair rules, advocates say, is to require companies to make their parts, tools and information available to consumers and repair shops in order to keep devices from ending up in the scrap heap. The surge in interest in right to repair is good news for consumers and environment, but it isn’t great news for those companies keen on planned obsolescence.
Fix, or Toss? The ‘Right to Repair’ Movement Gains Ground article says that in USA both Republicans and Democrats are pursuing laws to make it easier for people to fix cellphones, cars, even hospital ventilators. In Europe, the movement is further along.
Vice article The Right to Repair Movement Is Poised to Explode in 2021 article says that in USA fourteen states are exploring “right to repair” legislation as the movement gains steam. Whether it’s John Deere’s efforts to make tractor repair costly and annoying, Apple’s bullying of independent repair shops, or Sony and Microsoft’s attempt to monopolize game console repair, US corporations have done an incredible job the last few years driving bipartisan public interest in the “right to repair” movement. Last year witnessed monumental progress for right to repair and 2021 is expected to take the effort to an entirely new level.
In addition to the environmental impact of slowing the rate of expanding landfills there are also other benefits. A recent report by US PIRG found that repair monopolization comes with significant costs for American consumers. It also found that American families would save $40 billion ($330 per family) per year if they repaired more products and used them for longer periods. That’s of course
The French repair index: challenges and opportunities article tells that since January 1st 2021, France is the first country in Europe to have implemented a repairability index on 5 categories of electronic devices. While this index is a key milestone for the Right to Repair in Europe, it isn’t without limitations.
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Tomi Engdahl says:
Easy way How to test Capacitors, Diodes, Rectifiers on Powersupply using Multimeter
https://www.youtube.com/watch?v=i4jTHhXuKLA
Best Easy Way How to Accurately test Diodes, Capacitors, bridge rectifiers in TV power-supply boards, “how to use multimeter” to test or read TV parts in power circuit boards commonly in LCD, Plasma, DLP TVs. This is What every Tech must know when Testing TV Powersupply board, How to accurately test Diodes, Capacitors, Rectifiers in TV power boards using Multimeter this applies for any TV power boards like Samsung, Sony, Vizio ect…
Tips to test TV power-supply, Enjoy 8^)
Tomi Engdahl says:
How To Test a MOSFET Transistor Using a Multimeter
https://www.youtube.com/watch?v=RkWy1EirEu8
In this video I demonstrate how to test a MOSFET transistor with a digital fluke multimeter in the off state and the on state. This transistor came out of a Samsung Plasma TV, but is widely used by many brands.
Tomi Engdahl says:
Howto repair switch mode power supplies #1: basics, and block diagram of a PSU
https://www.youtube.com/watch?v=gnLX2qD6g3w
The repair of switch mode power supplies (SMPS) is economically a good investment for electronics repair shops and for hobbyists. However, in contrast to the old low frequency transformers and linear power supply units (PSUs), SMPS are rather complex. Still, due to their low weight, high efficiency, and being able to provide stable voltage output, they have became an ubiquitous component in almost every electronic equipment.
Howto repair switch mode power supplies #2: Stand-by circuit and its functionality
https://www.youtube.com/watch?v=MVVQQYpyzKo
Howto repair switch mode power supplies #3: Inductor in electronic circuits P1
https://www.youtube.com/watch?v=Z4PVrhYHBnU
Howto repair switch mode power supplies #4: Inductor in electronic circuits P2
https://www.youtube.com/watch?v=GZZvx3wxRQc
Howto repair switch mode power supplies #5: Magnetic core materials, ferrite vs steel
https://www.youtube.com/watch?v=bKasDelGVME
Howto repair switch mode power supplies #6: Basics of Linear Regulators and voltage references
https://www.youtube.com/watch?v=MkwuofJZm_I
Tomi Engdahl says:
Flyback switching power supply schematic explained (5V 10A, no chip)
https://www.youtube.com/watch?v=9fmpLUUtvow
Tomi Engdahl says:
How To Repair ATX PSU. The Full Tutorial. Computer Power Supply Repair
https://www.youtube.com/watch?v=UyS9rCtgoXQ
Tomi Engdahl says:
Electronics Troubleshooting Finding What’s Wrong
https://www.youtube.com/watch?v=r3uJu1CAS5g
Tomi Engdahl says:
Espotek Labrador Inexpensive Oscilloscope / Signal Generator Review – Any good for fault finding?
https://www.youtube.com/watch?v=pN3Tl1nuzi4
https://espotek.com/labrador/
Tomi Engdahl says:
Junk Box Oscilloscope, Can It Be Fixed?
https://www.youtube.com/watch?v=HqsXe3IKTCo
AE#12 Fluke PM3370B Oscilloscope Repair
https://www.youtube.com/watch?v=jpDIVSKv01E
Tomi Engdahl says:
When the Analog Oscilloscope Is Better than the Digital Oscilloscope
https://www.youtube.com/watch?v=H3XzS6Pguig
Tomi Engdahl says:
Kyle Wiens / iFixit News:
A teardown of the iPhone 14 Pro Max shows the new X65 satellite modem and a similar internal design to the 13 Pro Max, making the device difficult to repair — The iPhone Pro Max 14 is out, and the general consensus among tech reviewers seems to be that it’s better than the last one …
Apple’s 14 Pro Max is Worse than the Vanilla 14
https://www.ifixit.com/News/65243/14-pro-max-teardown
The iPhone Pro Max 14 is out, and the general consensus among tech reviewers seems to be that it’s better than the last one, but maybe not enough to justify an immediate upgrade.
The satellite capability of this phone might come in handy if you are going to get stranded in the desert or on a Dynamic Island anytime soon—but only as long as the phone doesn’t break. Unlike the Vanilla 14, which made a big repairability step forward, this year’s Pro and Pro Max phones are trapped in the past with Apple’s less repairable legacy iPhone architecture.
A Different Kind of Space
With the brains out, we can move on to checking out what was once the SIM reader and is now, well, a whole lot of nothing.
Of course, the US phone is the only model with this empty space—you can see an EU-sourced board with a SIM socket in contrast with a SIM-less US board. It’s still a little eerie and very un-Apple-like to waste space like this. The plastic spacer is roughly the same size as a 2×2 Lego brick and weighs half a gram.
The question is, what will they fill the space with next time? There is zero chance this is staying empty for long.
Enter the X65 Satellite Communicator
Apple has switched to Qualcomm’s latest 5G modem across their product line. This is surely frustrating to Apple’s silicon team, who have been working for years (first with Intel, and then with their newly acquired in-house team) to produce their own 5G modem. They haven’t succeeded, so Qualcomm gets the win with their probably-very-expensive 4 nanometer part. The upside for Apple is that the new X65 supports band 53, Globalstar’s 2.4 GHz frequency for satellite communications. Try as we might, we couldn’t identify the satellite antenna inside the phone. (We have a guess, but tip us if you know where it’s at!) The iPhone already has 2.4 GHz antennas for Wi-Fi, of course—so Apple could simply be using the existing antennas.
In a conversation with Reuters over the weekend, Apple was defensive about having their innovation layered on top of Qualcomm: “iPhone 14 includes custom radio frequency components, and new software designed entirely by Apple, that together enable Emergency SOS via satellite on new iPhone 14 models.” All right, we get it. You worked hard to put the whole thing together. But Samsung has good engineers, so what’s stopping them from fast-following with their own SOS feature? Well, Apple’s committed to buying 85% of Globalstar’s volume, so for one thing, Samsung would need another satellite partner.
SpaceX and T-Mobile made an announcement, conveniently timed right before Apple’s Event, that they’d formed a technology partnership. Their media event, which looked rushed even by Elon Musk standards, promised SMS connectivity anywhere in the world. That would be distinctly revolutionary—but first SpaceX needs to finish Starship and launch a whole new constellation of Starlink 2 satellites each with whopping 7 meter antennas. It’s safe to say that Apple and Globalstar have the first mover advantage here.
Repairability
Only one question remains: What’s the score? Well, unfortunately these Pro models have been left in the dust by the more “boring” iPhone 14’s secretly enhanced repairability. Due to the 14 Pro and Pro Max continuing with iPhone 13-era construction, their score is stuck in the past, too.
At 6 out of 10 these Pros aren’t terrible, but you’ll want to use a case to protect that expensive rear glass. We’re maintaining the same scores as the 13 Pro models, but with the newfound certainty that Apple knows how to do better.
We are proud to announce that our service manuals for the iPhone 14, 14 Pro, and 14 Pro Max are online featuring replacement instructions for everything from the screen to the battery.
Tomi Engdahl says:
How clever mechanics keep 50-year-old BART trains running: Windows 98, eBay, and scraps
Half a century later, resourceful BART mechanics keep trains alive
https://www.mercurynews.com/2022/09/17/how-clever-mechanics-keep-50-year-old-bart-trains-running-windows-98-ebay-and-scraps
When BART first carried passengers, the country was sending astronauts to the moon. The Apollo-era trains were symbols of a generation barreling toward a space-age future complete with carpeted floors and a seat promised to every passenger.
That was 1972, when BART was state of the art. But half a century later, as the agency celebrates its 50th anniversary this month, many of those same silver-and-blue trains are still chugging through the Bay Area. And keeping them running — even in the country’s technology capital — requires a special breed of ingenuity.
BART mechanics rely on Frankensteined laptops operating with Windows 98, train yard scraps and vintage microchips to keep Bay Area commuters on the rails.
Tomi Engdahl says:
This almost BROKE me.
https://www.youtube.com/watch?v=Oijav9jJjqM
A cheap and easy fix is all that separates Linus from revamping his streaming setup with a Sony A7S II. Except it wasn’t easy. And actually he didn’t save much money in the end either…
CHAPTERS
—————————————————
0:00 Intro
1:07 Why I’m doing this
2:27 Why we can’t use it at work?
3:00 You will need:
4:00 Tear-down
7:04 We found the problem!
8:10 Linus tries Soldering
9:45 Slight problem..
10:33 …Solution!
12:40 Fail.
13:12 new problem!
14:16 LINUS MAD
15:30 Nick takes over
16:25 Reassembly
16:55 an LTT Silent Film
17:30 Total Cost
19:37 outro
Tomi Engdahl says:
This should be illegal… Battery Repair Blocking
https://www.youtube.com/watch?v=Mkum7G-0vWg
What exactly happens to those batteries once you’re done with them? And why is replacing them so dang hard? We explore the how’s and the why’s.
CHAPTERS
—————————————————
0:00 Intro
1:16 Cautions
1:32 Basic components
2:40 We can do this.. right?
3:46 Pack prep
6:47 Building the pack
7:54 Spot welding
9:35 POP
9:50 Back-up plan
11:50 He’s OK
12:50 Mishap
14:02 Battery repair realities
15:10 BMS Types
17:20 Middle Ground
18:09 How YOU can help
Wanna make 18650 Battery Packs? WATCH THIS FIRST!
https://www.youtube.com/watch?v=f9hsqDr381o
All these years Ive been learning how to make battery packs and with every iteration I build a better 18650 Lithium ion battery pack every time.
This, is my safest battery pack to date. I have shared with you my experience and knowledge of building 18650 battery packs from over the years.
Hope you enjoy it.
Tomi Engdahl says:
CORDLESS POWER TOOL BATTERY HACK! HOW TO FIX THE DEAD ONES! STOP WASTING YOUR MONEY! TIPS AND TRICKS
https://www.epanorama.net/newepa/2021/02/08/right-to-repair-2021/comment-page-3/#comment-1781222
Tomi Engdahl says:
How to repair earphones head jack at home step by step
https://www.youtube.com/watch?v=kI3vhltU5H4
HOW TO REPAIR EARPHONES/HEADPHONES JACK AT HOME STEP BY STEP
Tomi Engdahl says:
How to make a 3.5 mm stereo to XLR mono adapter cable
https://www.youtube.com/watch?v=4wqzwguze0M
Play your stereo music into a mono amplifier with this easy project!
https://www.youtube.com/watch?v=bJ3AS5EwOCk
Tomi Engdahl says:
The Art Of Methodical Fault Finding – A Practical Example
https://www.youtube.com/watch?v=3vP0YEsBeE4
Tomi Engdahl says:
The Amazing $1 Short Finder Upgraded! Convert your multimeter to a 4 lead Kelvin Probe Short Tracer
https://www.youtube.com/watch?v=0eixDdCpiO4&t=1470s
Tomi Engdahl says:
EEVblog #954 – How To Setup An Electronics Lab For $300
https://www.youtube.com/watch?v=HicV3Z6XLFA
Dave shows you how you can set up an electronics lab for only a few hundred bucks.
Multimeter, oscilloscope, power supply, function generator, soldering station, solder, wire, tools, microscope and magnifier, and components.
The prevous video: https://www.youtube.com/watch?v=R_Pbj…
Forum: http://www.eevblog.com/forum/blog/eev…
Links:
UT136B: http://amzn.to/2hjEmF5
OWON VDS1022I USB Oscilloscope: http://amzn.to/2hguCer
YiHUA 936 Soldering Station: http://amzn.to/2hjHkcV
Hakko Tips: http://amzn.to/2gnhcvm
Lab PSU: http://amzn.to/2gN3AuD
USB Microscope: http://amzn.to/2hjFdpn
Head Magnifier: http://amzn.to/2gN4uqS
Flux Pen: http://amzn.to/2gnf8Ub
0.3mm solder: http://amzn.to/2hjIwx0
Lead Free solder: http://amzn.to/2hjMF45
If your budget allows: Rigol DS1054Z: http://amzn.to/2gN7JPg
EEVblog Main Web Site: http://www.eevblog.com
The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2
Support the EEVblog through Patreon!
http://www.patreon.com/eevblog
EEVblog Amazon Store (Dave gets a cut):
http://astore.amazon.com/eevblogstore-20
Tomi Engdahl says:
What gear do you need for guitar electronics? – Workbench Walkthrough
https://www.youtube.com/watch?v=rbTjJfaBiJw
A little walkthrough of my electronics workbench setup.
Tomi Engdahl says:
My Favorite Tools for Arduino/Electronics
https://www.youtube.com/watch?v=E-pH_EMBxxk
Tomi Engdahl says:
Epoxy Blob Excised Out Of Broken Multimeter, Replaced With A QFP
https://hackaday.com/2022/09/25/epoxy-blob-excised-out-of-broken-multimeter-replaced-with-a-qfp/
The black blobs on cheap PCBs haunt those of us with a habit of taking things apart when they fail. There’s no part number to look up, no pinout to probe, and if magic smoke is released from the epoxy-buried silicon, the entire PCB is toast. That’s why it matters that [Throbscottle] shared his journey of repairing a vintage multimeter whose epoxy-covered single-chip-multimeter ICL7106 heart developed an internal reference fault. When a multimeter’s internal voltage reference goes, the meter naturally becomes useless. Cheaper multimeters, we bin, but this one arguably was worth reviving.
Throbscottle] doesn’t just show what he accomplished, he also demonstrates exactly how he went through the process, in a way that we can learn to repeat it if ever needed. Instructions on removing the epoxy coating, isolating IC pins from shorting to newly uncovered tracks, matching pinouts between the COB (Chip On Board, the epoxy-covered silicon) and the QFP packages, carefully attaching wires to the board from the QFP’s legs, then checking the connections – he went out of his way to make the trick of this repair accessible to us. The Instructables UI doesn’t make it obvious, but there’s a large number of high-quality pictures for each step, too.
Replacing a 40 Pin COB With a 44 Pin QFP
https://www.instructables.com/Replacing-a-40-Pin-COB-With-a-44-Pin-QFP/
Tomi Engdahl says:
Repairing Switching Mode Power Supplies
https://audioxpress.com/article/repairing-switching-mode-power-supplies
There are a lot of books and articles out there about how to design a switching supply, but not many on fixing them. As switching power supplies become ubiquitous in electronic devices today, it becomes that much more important to understand how they work and just as importantly how they fail.
Tomi Engdahl says:
All You Need To Know About AMPLIFIERS To Fix Stuff – A Beginners Guide To Audio Amplifier Repair
https://www.youtube.com/watch?v=0oWBcTTeMNQ&t=1934s
NOTE TO BEGINNERS This video is suitable for anyone with at least a basic knowledge of electronic components, particularly Transistors. If I covers topics here that you are not familiar with I strongly recommend you watch my other videos in the ‘All You Need To Know About’.. series first. In particular ‘All You Need To Know About Transistors To Fix Stuff’
Tomi Engdahl says:
All You Need To Know About Logic Gates To Fix Stuff – Tutorial Guide
https://www.youtube.com/watch?v=kYKHIZXmfxM
Let’s take a look at Logic Gates. You find these little circuits in all sorts of electronic devices and you need to understand them in order to be able to repair these devices. This is part one where we look at the theory and operation of logic gates from the point of view of the repair technician. In part two we will look at some practical examples, learn how to understand logic circuit schematics and how to troubleshoot logic gates.
Tomi Engdahl says:
Industrial Electronics Repair Use Basic Electronics Knowledge To Fix Just About Anything For PROFIT
https://www.youtube.com/watch?v=-UUXy8BxXb4
LER #312 This repair video was recorded in two sessions and is pretty much unedited. It’s quite long but it shows REAL LIVE repair work on a PCB with no schematics and very little information available. This is the control PCB for an emergency electricity backup system (diesel generator and battery) for mains power. Can we fix it? Well it’s all just electronics at the end of the day, yeah?!?! Get a coffee or beer and, sit down, learn how to repair industrial electronics and make some serious profit! Enjoy the ride.
Tomi Engdahl says:
Socket 7 motherboard repair – endless faults!
https://www.youtube.com/watch?v=cwMtuvmFagc
Trying to revive a pretty uncommon Socket 7 motherboard: it’s an ASK ATX55C for which I seriously struggled to find any info at all!
00:00 Introduction
01:12 Overview
03:25 Jumper configuration
07:08 First power up
07:35 Troubleshooting
09:58 Fault 1
13:00 Fault 2
15:53 Fault 3
20:10 Fault 4
20:38 Alternative memory/Fault 5
26:21 External 3.3V test
27:00 Fault 6
30:10 Cache removal
31:43 Keyboard controller replacement
31:50 It lives!
34:00 3.3V troubleshooting
37:53 Conclusion
Tomi Engdahl says:
Do unused (new) electrolytic capacitors deteriorate like those in a circuit might over several years?
In use the water works its way out, due to the temperature (that’s why they’re rated for a number of hours at a certain temp). So long as your storage isn’t hot, they shouldn’t have dried out.
They can also loose their polarisation over time. That cases them to become leaky and low in value.
Slowly applying a gently rising voltage will reform them. After they’ve sat for an hour or two at about 80-85% working voltage you can take them off the supply and see how well they hold voltage.
If they stay charged for a decent amount of time, then measure good ESR and value on a cap tester they’ll generally be OK.
Tomi Engdahl says:
#1308 Where to find schematics
https://www.youtube.com/watch?v=Ii–aTKocTA
places to find schematics:
http://www.ko4bb.com/getsimple/index.php?id=manuals
http://bama.edebris.com/manuals/
https://xdevs.com/doc/
https://danyk.cz/index_en.html
https://www.amprepairparts.com/schematics.htm
https://www.schematicsunlimited.com/
https://w140.com/tekwiki/wiki/Main_Page
https://www.vintage-radio.info/heathkit/
https://www.hifiengine.com/
https://elektrotanya.com/keres
https://artekmanuals.com/
https://elecurls.tripod.com/
https://history.nih.gov/display/history/Manuals
Tomi Engdahl says:
https://hackaday.com/2022/11/13/power-up-vintage-electronics-less-unsafely-with-a-dim-bulb-tester/
Tomi Engdahl says:
https://hackaday.com/2022/11/20/cheap-display-fix-brings-thermal-camera-back-to-life/
Tomi Engdahl says:
How To Repair? The Death Of Schematics
https://hackaday.com/2022/11/21/how-to-repair-the-death-of-schematics/
There was a time when, if you were handy with a soldering iron, you could pretty easily open up a radio or TV repair business. You might not get rich, but you could make a good living. And if you had enough business savvy to do sales too, you could do well. These days there aren’t many repair shops and it isn’t any wonder. The price of labor is up and the price of things like TVs drops every day. What’s worse is today’s TV is not only cheaper than last year’s model, but probably also better. Besides that, TVs are full of custom parts you can’t get and jam-packed into smaller and smaller cases.
Reuse, Recycle
There is something appealing about repairing things instead of junking them. It should be good for the pocketbook and it is certainly good for the environment. However, the sad case today is that many things are made to be unrepairable. Even if there were parts and schematics, unless you can do it yourself like many of us can, paying someone to do the repair is probably infeasible. Times have changed. Unless, of course, you can find a Repair Café.
Tomi Engdahl says:
Thinking about taking your computer to the repair shop? Be very afraid
Not surprisingly, female customers bear the brunt of the privacy violations.
https://arstechnica.com/information-technology/2022/11/half-of-computer-repairs-result-in-snooping-of-sensitive-data-study-finds/
Tomi Engdahl says:
Build A Cheap DIY Signal Tracer / Injector Pen Useful For Electronics Fault Finding
https://www.youtube.com/watch?v=LyrOzRsCPqA
A Signal Tracer is a really useful bit of kit for any electronics repair bench. So in this video I decided to build a cheap Audio Signal Injector / Tracer Pen using some common circuits I found on the internet… That should be nice easy and cheap to do yeah? I mean, really, how hard can this be???
Tomi Engdahl says:
Learn Electronics Repair #16 LED Disco Lights (1)
https://www.youtube.com/watch?v=XgPZ1XpVppE&list=PLQ_OzNEYrepV2dUXuqvVHsCxr5rowKBNh
Tomi Engdahl says:
Rescue That Dead Xbox With An External PSU
https://hackaday.com/2022/12/01/rescue-that-dead-xbox-with-an-external-psu/
Tomi Engdahl says:
How a PSU With Too LOW Voltage Can Kill Your Electronics Devices! HOW A Buck Converter Works!
https://www.youtube.com/watch?v=KAJbetbyK8Q
LER #336 I’ve seen this many times with items such as Android boxes and Set Top Box Streaming devices. Plug a 5V PSU into a 12V device and it goes Bang! Or at least it goes DEAD. Wanna find out why this happens and how to fix it? You just gotta press PLAY!
Tomi Engdahl says:
P J Huffstutter / Reuters:
John Deere signs an MOU with the American Farm Bureau Federation, promising farmers the right to repair their equipment or go to an independent technician
Deere & Co. will allow farmers to repair their own equipment
https://www.reuters.com/markets/commodities/farm-bureau-deere-co-sign-mou-ensuring-farmers-right-repair-equipment-2023-01-08/
Tomi Engdahl says:
https://hackaday.com/2023/01/09/ask-hackaday-whats-your-worst-repair-win/
Tomi Engdahl says:
You Can Now Fix Your Deere
https://hackaday.com/2023/01/09/you-can-now-fix-your-deere/
Over the last few years we have brought you many stories about John Deere tractors, and how their repair has been locked down such that only manufacturer-authorised technicians can work on them. They’ve become a poster child in the battle for the right to repair, a symbol of the worst practices. Finally now we can bring you some good news of sorts, as the agricultural giant has signed a memorandum of understanding with the American Farm Bureau Federation to ensure that their products will henceforth be repairable by people without Deere approval.
https://www.reuters.com/markets/commodities/farm-bureau-deere-co-sign-mou-ensuring-farmers-right-repair-equipment-2023-01-08/
Tomi Engdahl says:
One surface crack on a PTFE-coated pan releases about 9,100 plastic particles.
Why you should throw away your non-stick pan the second it cracks
One surface crack on a PTFE-coated pan releases about 9,100 plastic particles.
https://www.popsci.com/environment/non-stick-pan-plastic-pollution/
Non-stick cookware is often a kitchen favorite because food doesn’t stick to its surface—making it easy to whip up dinner without a huge cleaning hassle. The kitchen essential has grown in popularity since scientists created the first non-stick cooking pan in 1954, but the COVID-19 pandemic drove a surge. The market demand for non-stick cookware reached 206.1 million units worldwide in 2020 and is expected to increase even more due to the growing preference for it.
The non-stick coating is made of a synthetic fluoropolymer called polytetrafluoroethylene (PTFE), more commonly known under the brand name Teflon.
They found that non-stick cookware mainly coated with Teflon may release about 9100 plastic particles during the cooking process if it has a surface crack. Should something break the coating, around 2,300,000 microplastics and nanoplastics may be released and potentially find their way into food.
These cracks are a problem because PTFE falls under per- and polyfluorinated substances (PFAS), a group of chemicals that don’t break down in the environment, contaminate soil and water and build up in the bodies of living creatures.
To avoid contaminating food or the environment with plastic particles from PTFE cookware, at-home chefs must use soft turners or non-sharp utensils that don’t scratch the surface during the cooking and cleaning process. Should there be any scratches on the cookware, replacement is recommended, says Fang.
Still, cracked surfaces aren’t the only thing to consider when cooking with Teflon. The coating can also release toxic chemicals into the air when it reaches extreme temperatures. There are several cases of individuals experiencing temporary, flu-like symptoms from polymer fume fever—as a result.
“In our daily lives, we have lots of plastic items surrounding us,” he adds. “Most of them can gradually release microplastics and nanoplastics in their lifetimes, as tested and confirmed in this study.”
Tomi Engdahl says:
A MacBook Security Chip Is Giving the Secondhand Computer Market Hell
Apple’s T2 chip is preventing refurbishers from being able to assign Macbook’s to a new user, which means they can’t sell them.
https://gizmodo.com/macbook-t2-security-chip-used-macbook-apple-1850030042
Tomi Engdahl says:
How to Troubleshoot Electronics Down to the Component Level Without Schematics
https://www.youtube.com/watch?v=QFAWb1F_EpE
Have you ever had a printed circuit board go bad on you and you needed to repair it but you don’t have schematics?
If you don’t have schematics, it’s very hard to troubleshoot any electronic circuit. You can easily get lost and not know where to start looking.
Well, there is a method that we use to troubleshoot electronic circuits without schematics and you can easily follow along to develop this skill set too. It’ll take practice and over time, you can use this on almost any circuit.
Here is a video on how to troubleshoot a linear power supply without any schematic.
Remember to like, share, and leave a comment below if you learn anything from this.
Tomi Engdahl says:
Board Repair Basics #1 – Introduction
https://www.youtube.com/watch?v=i293n9VVpHg
In this series we’re going to look over the basics of component-level board repair. This video is an overview of what we’ll be covering, and the tools that we’ll be using.
Board Repair Basics #2 – Power System Architecture
https://www.youtube.com/watch?v=8cULQlG0ZIc
Board Repair Basics #3 – Buck Converters
https://www.youtube.com/watch?v=Bl6gYg_PzBQ
Tomi Engdahl says:
The most common fault on a laptop charger power supply
https://www.youtube.com/watch?v=RNVfHx8wAGY
Tomi Engdahl says:
Dishwasher Repair Nightmare: Chasing Down 3 Faults
https://hackaday.com/2023/02/05/dishwasher-repair-nightmare-chasing-down-3-faults/
It all started with a vague error code (shown in the image above) on [nophead]’s Bosch SMS88TW01G/01 dishwasher, and it touched off a months-long repair nightmare that even involved a logic analyzer. [nophead] is normally able to handily diagnose and repair electronic appliances, but this time he had no idea what he was in for.
Tomi Engdahl says:
Use Basic Electronics Knowledge To Repair Industrial Electronics – Pure Methodical Fault Finding
https://www.youtube.com/watch?v=BONOZW3xN_0
This is where our basic knowledge of electronics eventually takes us. Pick up a faulty PCB that you know almost nothing about, apart from maybe it’s basic function and use a mixture of intuition, a general understanding of electronic components and circuits, a touch of voodoo and a bit of luck and you have a very good chance of diagnosing and fixing the problem. This is where the money is guys, learn to do this sort of repair and you will find that working on this sort of equipment can be very profitable and also very fulfilling. Watch, learn and enjoy
Tomi Engdahl says:
HMD’s latest Nokia phone is designed to be repaired in minutes
https://www.theverge.com/2023/2/25/23611844/hmd-nokia-g22-repairable-smartphone-ifixit-sustainability
/ The company claims the Nokia G22’s battery can be replaced in around five minutes and its screen in roughly 20. HMD is partnering with iFixit to sell replacement parts.
HMD has worked to make what it says are the most common smartphone repairs — replacing a broken screen, charging port, or flat battery — a simpler process on its new Nokia G22, and it’s partnering with repair specialists iFixit to provide customers with the necessary replacement parts, tools, and guides. The Nokia G22 will be available on March 8th in the UK for £149.99 (€179 / around $180) and will be sold in select global markets like Europe but not the US.
The company joins a growing list of smartphone manufacturers that are making replacement parts more easily available to end customers. In the past couple of years, we’ve seen Samsung and Google partner with iFixit to sell replacement parts, while Apple launched its own Self Service Repair program. These companies are making spare parts easier to buy, but the actual ease with which you can repair their devices is more hit-and-miss.
Tomi Engdahl says:
The Tale Of Two Broken Flukes
https://hackaday.com/2023/03/01/the-tale-of-two-broken-flukes/
Some repairs happen as if by pure luck, and [Sebastian] shows us one such repair on Hackaday.io. He found two Fluke 175 meters being sold on eBay, with one having a mere beeper issue, and another having a “strange error”. Now, theoretically, swapping beepers around would give you one working meter and a kit of spare parts – but this is Fluke we’re talking about, and [Sebastian] wasn’t satisfied leaving it there.
Tomi Engdahl says:
Swollen Battery? Expensive to Replace? Run Your Smartphone Without a Battery!
BY
ARJUN VISHNU
PUBLISHED NOV 13, 2022
Don’t throw away that old phone or tablet just because the battery has swollen. You can still power it up without a battery.
https://www.makeuseof.com/swollen-battery-replace-run-smartphone-without-battery/#Echobox=1678370504