| Electronics > Repair |
| Keyboard flexi PCB |
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| tooki:
--- Quote from: HwAoRrDk on June 09, 2024, 07:27:48 pm ---Well, there were some thermal pastes for PC CPUs, etc. that were electrically conductive, and you had to be careful with any overspill, but I don't know if those are still around these days. And of course these days you have liquid metal, etc. --- End quote --- That’s why I specified “normal” thermal paste. There are exotic exceptions, but the normal stuff is non-conductive. |
| jzx:
I dont know the brand, it was long time ago, but I used a silver paint for repair a spectrum keyboard. It was very thin, like water, and had a smell like some organic solvent (not alcohol or acetone). I had to do a mask with adhesive cellophane to apply, but it dried fast (perhaps 1-2 hours) and the resistance was low. Perhaps somebody can recognize this paint. |
| soldar:
I did not think of using masking tape which is so obvious... I hope I will remember for next time. I could have used Post-it notes which will come off easily. |
| Haenk:
--- Quote from: jzx on June 10, 2024, 03:14:02 pm ---I dont know the brand, it was long time ago, but I used a silver paint for repair a spectrum keyboard. It was very thin, like water, and had a smell like some organic solvent (not alcohol or acetone). I had to do a mask with adhesive cellophane to apply, but it dried fast (perhaps 1-2 hours) and the resistance was low. Perhaps somebody can recognize this paint. --- End quote --- Yes, I had this stuff too, like 30+ years ago. It claimed to contain silver (Was it called "liquid silver"?), and was really expensive. It was solvent based and dried up to look like some crappy silver paint. However it did work for me. Unfortunately, the next time I wanted to use it, the little bottle had dried up. |
| soldar:
--- Quote from: Haenk on June 11, 2024, 08:42:46 am ---Yes, I had this stuff too, like 30+ years ago. It claimed to contain silver (Was it called "liquid silver"?), and was really expensive. It was solvent based and dried up to look like some crappy silver paint. However it did work for me. Unfortunately, the next time I wanted to use it, the little bottle had dried up. --- End quote --- This is a common problem with anything with solvents and infrequent use. If I know what solvent will work I will add some and also I try to seal the product as best I can. At my desk I always have a glue stick of the common kind used for paper. I seldom use it so they used to dry up and need to be replaced. Until someone told me the solvent is plain water so now, every time I use it, I put a few drops of water on it before I put it away. Works great. |
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