Teardowns

LED DMX-512 lamp teardown

Here is a tear-down of 36W Par LED PAR CAN Stage Light with IR remote and DMX-512 control from wish.com sale. The light works well with DMX-512 control. Front and back On the back there are XLR3 DMX-512 connectors, address display and control buttons. Look inside On the left there is aluminum circuit board with

Omron blood pressure monitor teardown

This is a teardown of an Omron M6 Comfort blood pressure monitor. This was several years old model (newer looks different). This teardown was done because this was no longer reliable – the display was missing most of graphics. Let’s open it. Open two screws and use pry tool to open plastic case. Let’s go

Extension cord failure and teardown

I had some problem with breakers tripping. Then the source of the problem turned to be this extension cord made by Bachmann. Sparking and blackening outside and also inside It seems that child protection mechanism failed and part of it was stuck between contact bars. This then caused sparking on contacts, which caused blackening. End

LED flashlight battery holder resistance

I had some broked LED flashlights and I thought of using components from them. Especially the compact battery holder that takes three AAA batteries looks useful in other small projects. Those worked OK when lightly loaded. But when I started taking current for a small motor, I could not get acceptable power out of them.

Bad wire connector teardown

I have earlier written about bad cheap Chinese wire connect that did not live up to specifications and was potentially dangerous for mains power at http://www.epanorama.net/newepa/2018/01/24/cheap-quick-wire-connector-block/ Here is teardown of that Let’s open open it Here was all. The problem in construction that there is quite weak spring that pushes against wire. On the other

SilverCrest USB power bank teardown and repair

Here is few years old SilverCrest USB power pack with solar charger that stopper charging a smart phone. Because changing the charging cable did not help and the charging connector felt a little loose, it seems that the power pack is to blame here. Ithad served several years well as portable power pack that had

Phoenix Contact SSR teardown

Here is a tear-down of ST-OV2- 12DC/ 60DC/1 – 2905022 solid state relay from Phoenix Contact. This product is old, obsolete and manufacturing has been discontinued.   Solid-state relay ST-OV2- 12DC/ 60DC/1 – 2905022 is a plug-in power solid-state relay (plug to certain Phoenix Contact wiring terminals), with LED and protective circuit in input and

Copy protection module teardown

Here is teardown of a ALADDIN HASP software copy protection module that was designed to be plugged to PC parallel port. Because modern PCs no longer have parallel ports, this is obsolete technology ready for teardown. Not much to be, just few custom or custom marked ICs (ALHY1 and SPIN1) inside.

Phoenix Contact over voltage protector

Here is tear-down of PT 2X2-24DC-ST over voltage protector for 24V systems: PT protective connector with protective circuit for two 2-wire floating signal circuits. 24 V DC nominal voltage. HART-compatible. What is insideComponents close-upWhat was found was two dual gas discharge tubes ant two other over voltage protectors. The gas discharge tubes were connected to