Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [repair]

Questions relating to electrical/electronic repair. Questions on the repair of consumer electronics, appliances, or other devices must involve specific troubleshooting steps and demonstrate a good understanding of the underlying design of the device being repaired. Please ensure your questions are somewhat generic in nature so they are likely to help future visitors and not too localized to a specific piece of equipment.

Meta posts on the subject of repair questions
Is asking on how to fix a faulty circuit on topic?

Web sites dedicated to repair issues
iFixIt.com

534 questions
3
votes
3 answers

How to diagnose and repair a radio?

A friend gave me a Marine VHF Radio Receiver which is working badly, and asked me if I can look into it and try to repair it (I'm not going to charge him). The first time the radio is turned on, the reception works OK, but after a few minutes the…
user2798
3
votes
2 answers

How do I clean/repair a rotary encoder?

I have a mouse wheel that's acting up and even after taking it apart and cleaning it inside out very well, there seems to be some dirt inside the rotary encoder of the mouse wheel. Blowing it with air didn't help. I have cleaned potentiometers…
Schizomorph
  • 421
  • 5
  • 10
2
votes
1 answer

Trotec TTK 50 E ugly noise from relay

I have a Trotek TTK 50 E dehumidifier ( https://uk.trotec.com/fileadmin/downloads/Entfeuchtung/TTK50E/TRT-BA-TTK50E-TC-002-EN.pdf ). Recently it stopped working. Ugly noises came from it. I disassembled it a bit and it turned out that the compressor…
riskop
  • 141
  • 3
1
vote
2 answers

Can I safely remove this buzzer from a UPS PCB?

I want to remove this buzzer from this UPS PCB. It's very noisy. For the UPS to continue working, should I just remove the buzzer with a soldering iron? or do I have to put some wire or resistance in-place?
topcat
  • 13
  • 4
1
vote
1 answer

Easy nichrome rivet for a newbie?

I'm a total newb, but I'm learning fast. Is there any easy way to get this nichrome wire to fasten to the plate below it? Could I just tuck it underneath the plate, between the mica board?
juddmaltin
  • 21
  • 2
1
vote
2 answers

Injecting power into circuit to find a short to ground

I'm trying to find a short to ground on a Nintendo Switch of which there are no schematics. The short is present on the 3v3 line. What I would like to do is inject power into this line from my bench top power supply to see if the short presents its…
Pintglass
  • 73
  • 1
  • 6
0
votes
1 answer

Repairing toy firetruck

I am trying to repair this simple toy firetruck with a button, a speaker, a motor and some lights. First the sound stopped working, and now there is no light or motion either. All the wire connections seem to be solid, and I have confirmed the 4.5V…
Vegard
  • 61
  • 6
0
votes
1 answer

Where should the other wire for this circuit connect?

I want to repair this solar charging LED flashlight. When I took it apart I found that the black wire had broken off from the circuit and battery. I can see where it should connect to the battery, but I am not sure where it should connect to the…
Mahesh Sundaram
  • 25
  • 4
0
votes
0 answers

DSC-P52 digital camera power button

I have searched and asked in a lot of forums for a long time but my problem with this camera is still there. Is there anything that I can do to fix it? My problem is the socket for the power and shutter button is broke off and 2 solder pad. I think…
Underscore2
  • 1
  • 1
0
votes
1 answer

Why my clock radio is running fast?

I have an old clock radio from the 90s that worked great until recently. Suddenly it stared running fast and every day it gets about 10m ahead. I am curious what could be going upon under the hood to cause this and how I might diagnose and fix it.…
Rishi
  • 183
  • 1
  • 5
0
votes
2 answers

What is the blue film that covers the PCB in my TV's remote?

As a weekend project I am trying to fix my TV's remote and I noticed that the contacts of the remote's keyboard is covered by a thin blue film: As you can see, the remote's PCB is covered by a blue layer of some sort of film. I wondered what is…
Dimitrios Desyllas
  • 199
  • 7
0
votes
0 answers

Capacitor replacement on ancient Fisher & Pykel fridge - which pins to connect?

I have three pins on this compressor: [a] white wire post - live phase - bottom left [b] capacitor resister - copper terminal - top left [c[ black wire post - ground to wall - bottom right It's so old it's probably one of the first ever made: ABE021…
Tomachi
  • 111
  • 4
0
votes
0 answers

Would a device with different power rails become one if both rails are shorted to ground

I'm trying to repair a nintendo switch that seems to have multiply shorts to ground. The shorts to ground are on the 3v3 rail and on the 1v8 rail. I seem to be getting continuity between the two different rails so if i was to inject power into one…
Pintglass
  • 73
  • 1
  • 6
0
votes
2 answers

Power supply adapter for Arduino Pro Mini

First of, i'm not from electronics background, i'm sorry if my question sounds stupid or irrelevant. I recently started a project as a hobby with a help of https://www.mysensors.org/build/irrigation i have purchased all the components and has built…
Ch33f
  • 3
  • 1
0
votes
2 answers

Module board discontinuities?

I'm not too experienced with electronics and made a really noobish mistake. I was holding up the board with a set of helping hands. I was padding the alligator clips with some fabric but I knocked it over and scratched the board with the clips in…
Jorge Caballero
  • 1
1
2