68kMLA Classic Interface

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Macintosh Portable backlit board question
Posted by: 80sboy on 2020-04-06 21:55:19
It’s been quite a time in quarantine....fixed up a IIfx, Color Classic, SE/30, etc...

  recapped my backlit model but can not get the floppy drive to work, it crashes the system. I have a second backlit motherboard I’m ready to recap but notice that Q4 has a missing pad....looking at the schematics it appears that Q4 was for power for external video, is this part necessary to replace? If so where can I run a jumper wire?
 

  This part was missing on the board and when I went to clean up the pads I noticed that the pad was missing. How would this have been burned off?

thanks for any advice!

thomas

68709D89-8868-409A-958A-95E8FCFEDB25.jpeg
Posted by: 80sboy on 2020-04-07 00:24:07
Ok scraped back the track and used some copper tape to repair this. Waiting on an order or some transistors so I can finish this board and see what happens...
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