SE/30 Whiteout! — #10

Post #10 by CC_333

Source Forum	SE/30 Whiteout! — #10
Category	Hardware
Post Date	Sat, 29 Dec 2012 - 17:05
Original URL	https://68kmla.org/bb/threads/se-30-whiteout.26958/

Post

I honestly do not think so.

That's good.

But if you're really worried about it, and if you have a lot of free time, and if you don't mind the extra effort involved, you could swap CRTs and check to make sure that your CRT is okay.

I don't think I'll bother with that. I might as well use the analog board from the test machine in the problem machine (less handling of the fragile CRT, of which I've already accidentally broken one so far >

)

looks like board #1 that technight did, had an (all white screen) with his first attempt at fixing this mainboard.in this case the issue was the motherboard.

This is different, I think.

If the logic board is working fine, check resistor R20 on the Analog board.

Okay, I'll do that. If it is blown, is there a chance that everything else is OK?

If you haven't recapped the PSU and Analog board, it's definately recommanded as most capacitors are degraded due to age as they are over 22 years old now.

I thought of that (since I have some), but I didn't want to waste any more time than I already have unless I can determine without a doubt the board isn't a lost cause.

the fact is I've never heard of any serious SE/30 problem that pertains to the analog board or PSU because of leaky/aging caps on them.

Perhaps not, but it's still probably a good idea, especially if there's evidence of leakage (I have a flaky SE/30 power supply, and it smells like electrolyte, which probably means the capacitors have leaked and failed). By the way, I have noticed that they (SE and SE/30 A/B's and P/S's) are particularly sturdy compared to, say, the 128-Plus A/B.

it looks like the user may have shorted something and destroyed components.

Hopefully, any damage I have accidentally caused is easily and inexpensively fixable.
Thank you all for the suggestions!

c