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Home Forums 68kMLA SE/30 Analogue Board troubles. — #7
Post #7 by MidnightCommando
Source Forum68kMLA
CategoryTroubleshooting
Post DateFri, 21 May 2010 - 20:20
Original URLhttps://68kmla.org/bb/threads/se-30-analogue-board-troubles.20612/
Post
I have a multimeter, it just doesn't have an inbuilt Cx/Lx test circuit. I implied the presence of one when I gave the reading of R19 as 221.4R :)

I will replace C15 and reflow L2 and L3, if it will help. I was sincerely hoping at least it wasn't the replacement caps I put in - It would be very black humour for ELNA caps to suddenly stop working :beige:

As I asked, it's certainly possible that P1 is the problem, but why do the scorch marks and burning occur? Is this an error in manufacture, or does high voltage somehow jump and arc across the board, or what?

Also, thanks to a Corgi friend saving me yet again, I found some high-res schematic scans that were encoded to gif89a, they're probably not /strictly/ legal to distribute but I'm going to redo them when this mess is sorted and the schematics might be handy to someone else.

They are for the Sony SMPSU and the SE/30 Analogue Board (the model I have).

Thanks for all the help, I'll get back to you guys in about an hour and a half when I can actually solder again (the house is still asleep). :)

mp.ls