Forums before death by AOL, social media and spammers... "We can't have nice things"
|    comp.sys.tandy    |    Life is dandy cuz you're gettin a Tandy!    |    5,684 messages    |
[   << oldest   |   < older   |   list   |   newer >   |   newest >>   ]
|    Message 5,443 of 5,684    |
|    David Jones to All    |
|    Re: TRS-80 Model 4 Keyboard repair    |
|    27 Nov 16 12:59:45    |
      From: djones60@gmail.com              Well I got the keyboard working. Below is what I did in case someone else       runs into this problem              Took a X-acto knife and very carefully cut away the plastic over the trace       that need to be repaired. I did it as close to the damage as possible and it       also too some scrapping to expose the traces. It really helps if you have a       hands free magnifying        glass.              Then I cut a piece of 30 gauge wire to fit, stripped the ends, then spot glued       it down with super glue just short of the stripped part.              Once things were glued down so it wouldn't move around, I used some "Silver       Conductive Paste Glue Wire Adhesive Paint PCB Repair For LCD 0.3ML USA" I got       from ebay to make the connection from the original trace to the wire.              After this had dried and set, I tested the continuity. If it didn't take,       rinse and repeat.              With the traces repair and tested, I then covered that section with thin       cardboard pieces taped together. This was to keep it from flexing and popping       the connections lose.              The only other problem I ran into was some cross talk once I tried it live in       the computer. This showed up as if all the buttons on the repaired line were       pressed. Turns out this was caused by the bracket that covers the cable as it       enters the        motherboard cage. To fix that, I put a piece of thin cardboard between the       cable and the bracket. Not sure why it only showed up on the repaired line       but its all happy now.              Well I discovered two other problems with the computer. One was the focus pot       on the video board was arcing. The other was the original floppy drives. The       head rails need to be cleaned and lubed.              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
[   << oldest   |   < older   |   list   |   newer >   |   newest >>   ]
(c) 1994, bbs@darkrealms.ca