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| Picking up a mystery Classic II tomorrow. |
Posted by: smrieck511 on 2025-05-18 13:44:50
Apparently dead (and free). Will post what I find and hopefully the restore here. |
Posted by: smrieck511 on 2025-05-19 09:14:05
Considering this just came out of a guys basement after 30 years. Initial look is encouraging. Not battery bombed. Caps leaking (of course) on Power board and logic board (nasty on the power board) . So I'll clean it up and recap everything. ADB keyboard and mouse came too....Also got a Powerbook G4 in great condition!
Green corrosion in the connector. Corrosion possibly got all the way up the orange wire?
Anyone know at a glance if those are 1 or 4mb simms? |
Posted by: bibilit on 2025-05-19 10:17:21
1 Mb |
Posted by: smrieck511 on 2025-05-22 22:49:58
Recapped the analog board, cleaned, new gear and recapped the floppy drive and recapped the logic board....
Great CRT
Analog board working well
Floppy drive working well
When I turn it on it boots the system fine but no sound for the most part ..oddly I do get a faint chime about one out of eight times I turn it on.
i'm gonna go over the traces and and the four capacitors in the sound area tomorrow.
If anyone has any knowledge or advice, I'll gladly take it. Thanks. |
Posted by: dochilli on 2025-05-23 02:47:15
You have to recap the logic board. Then the sound problem might be solved. |
Posted by: bibilit on 2025-05-23 04:13:01
He advised having the LB recapped already, probably a broken trace |
Posted by: smrieck511 on 2025-05-23 05:11:32
yes I already recapped everything. All 44 capacitors later .. 13 on the logic board, 25 on the analog board and 6 on the floppy drive.
really just asking if the fact that it does a half volume chime once out of about 8 to 10 switch ons might be a clue as to where the problem lies? I would assume the sound circuit on the logic board. C4-C9 area. But maybe my assumption is wrong. |
Posted by: bibilit on 2025-05-23 06:29:39
Yes, this area, the sound chip is the one near both switches (DFAC) but have a look on the other side of the board, probably a broken trace there. |
Posted by: bibilit on 2025-05-23 06:30:46
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Posted by: smrieck511 on 2025-05-23 07:00:53
awesome. I'll check it out. Thanks for your help. |
Posted by: smrieck511 on 2025-05-23 07:01:23
also somewhat as expected, no sound out of the output jack. |
Posted by: smrieck511 on 2025-05-23 21:23:36
44 Capicitors later... got everything working. |
Posted by: Iesca on 2025-05-23 22:34:44
Congratulations! |
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