Repair

Smart phone mic repair

I just had issue with my Samsung S4 mini: the sound other end of call was very weak. Solution: clean mic hole on case (single less than 1mm diameter hole on bottom). Posted from WordPress for Android →

Uses for broken Android tablet

Modern smart phones and tables has big glass screens that broke easily. You might have some broken smart phones and/or tablets that might not be worth of screen repair. But would here be still some use for this kind of damaged device? And if there is, then how the tablet could be used when the →

Tek TDS 220 scope teardown

This was a broken scope considered beyond worth to repair by service, but I got it working again… (white tape that holds jumper wire going to display connector). Thank you for service manuals in Internet. Google search and YouTube are repair hacker’s friend. Posted from WordPress for Android →

How To Reverse Engineer Rigol DS1054Z

How To Reverse Engineer, Featuring the Rigol DS1054Z article and videos in it show what is inside a four-channel digital scope. With four channels of input, Dave Jones was wondering how the engineers at Rigol managed to stuff two additional front ends into the scope while still meeting the magic price point of $400, it →

Bad elecrolytic capacitors again

Why modern high tech electronics fail? Very often the reason for that is electrolytic capacitor failure. Bad electrolytic capacitors on my PC again. The PC stated acting bad. It kept resetting my itself and quickly failed to boot. So I had to start fault-finding. In this kind of cases, the problems could be bad contact →

Battery teardowns

3x Battery Teardown article shows you what is inside different batteries. So if you open up a 9 V battery, you find 6 thin 1.5 V cells inside. But what was inside that lantern battery, the rechargeable PP3, or the funny shaped lump on the back of my laptop? Check 3x Battery Teardown article to see. If you →