From: MagerValp (MagerValp_at_cling.gu.se)
Date: 2005-12-06 23:26:44
First off, the 6526:s arrived today, thanks Ruud! Unfortunately I forgot the package at work, so I sat down and tried to figure what was wrong with another C64. The symptoms are the classic LED on, black screen. I replaced the fuse, which was blown, but the machine still won't power up. To summarize: * 250407 board. * PSU is fine, I measure 9.4 VAC at the power connector, and 5 V on the user port. * With the fuse removed, I measure 9.4 VAC across C21. * With the fuse in place, I measure 2.0 VAC across C21, but this fluctuates a bit (0.6 - 2.1 VAC). * With the fuse in place, I measure 0.15 V across pins 2 and 3 on VR1, the 7812, and this also fluctuates a little. * I tried removing the VIC and the SID, which I believe are the only 9/12V ICs, and it didn't have any effect. I don't have any other 250407 boards on hand, so I don't have anything to compare with. I also kinda suck at analog stuff :) So, does anyone have a clue as to what's going on? PS: after taking inventory, I realize that I could use a couple of 1541-II/1581 PSUs, and maybe a couple of C64s too (especially with 250407 and BN/E boards). If you have spares and are interested in trading or selling, send me a mail off list. Oh, and 230 V/PAL only :) -- ___ . . . . . + . . o _|___|_ + . + . + . Per Olofsson, arkadspelare o-o . . . o + MagerValp@cling.gu.se - + + . http://www.cling.gu.se/~cl3polof/ Message was sent through the cbm-hackers mailing list
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