Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 5 replies
  • Subscribers 11 subscribers
  • Views 924 views
  • Users 0 members are here
Options
You may also be interested in
This discussion is locked.
You cannot post a reply to this discussion. If you have a question start a new discussion

Mending Things

Roger B

Long ago I started a thread on the maker movement and mending things:

https://engx.theiet.org/f/discussions/20498/maker-movement-mending-things

To avoid the original being broken up in ‘tree’ format I will start a new one. Maybe it will survive in a readable format.

The minute set button on my 20 year old Radio/CD/Alarm Clock stopped working which made it somewhat useless. I don’t want a mobile phone by my bed so I decided to try and mend it. There were some buttons I have never used, program for example, so I hoped that the switches were identical and I could swap them.

The top was held on with 3 screws. The lead for the CD Laser safety switch was very short so it had to be disconnected to get the top off. A sensible safety precaution. Four more screws and a multipin connector released the switch PCB. A quick check with a multimeter confirmed that the minute set switch was faulty and the program switch was good.

A few minutes work with a soldering iron and solder sucker and the switches were exchanged. They were also used a PCB track bridges so I couldn’t just leave one out.

Plug the cables back in, screw it back together and test. Ready for the next 20 years

 

Parents
  • 0

    If I had the board layout I would probably attempt the same, maybe using a carbide end mill in the milling machine rather than a hand grinder. The problem as you say is getting the information. I do have to ask why you had to dig? Were the ends of the track concealed under something like a chip package?

Reply
  • 0

    If I had the board layout I would probably attempt the same, maybe using a carbide end mill in the milling machine rather than a hand grinder. The problem as you say is getting the information. I do have to ask why you had to dig? Were the ends of the track concealed under something like a chip package?

Children
No Data

Join us to get the best from IET EngX.

Joining EngX lets you personalise your experience so you stay up to date on the topics that interest you, plus you’ll be able to make connections who are looking to collaborate, exchange ideas and more.

Join us Not now

Community Rules & Guidelines