croissantking's conquests

No, but I can try to remove both original audio ports from a fried board I have…. Possibly even the SCSI port. dunno about the choke though.

Drop me a line…

This looks so much better than what I would have expected! Good luck with the Egret…

Progress with my spare 840AV board. I discovered why it wasn’t outputting video. It turns out the DAC (or what I think must be the DAC) wasn’t receiving a required -5V input. I traced this back to the voltage regulator that was instead outputting 0.65V. Yeah, that’s not going to work. So I checked its input and found 0V, but it should be -12V. Aha! There’s a break in continuity of an internal trace running back to the -12V pin of the PSU.

One bodge wire later, and I’m
now getting video output:



Another issue I was having is resolved too, namely that some Nubus cards weren’t working. This was due to the missing -12V feed.

There’s one outstanding issue with this board - sound output doesn’t work. Well, it does chime, but it dies once the OS has loaded.

Swapped out the audio amp and the sound is fixed! This board is REPAIRED.

So awesome!! and those traces are so tiny! Congrats!

Congrats on getting this one fixed! I've had nothing but headaches working on these boards, so I know what you went through to fix it. Amazing job!