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SE/30 simasimac problem (with new caps)
Posted by: mindthegap on 2023-05-05 17:09:56
Hey guys I'm macintosh collector from Korea(not north😉) It's my first post on 68K.
Yesterday, I got a SE/30 with an ethernet card from Japanese seller and tried to get power on but no chime, no screen.
So i opened the case. It was pretty clean. (Better than i expected)

20230504_215959.jpg

So I cleaned the board with vinegar and IPA and recapped the main capacitors.
When I powered on, there's chime of death and shows simashi mac.

20230505_114614.jpg


Now I'm finding the cases of simashimac with death chime and I think It's related the ram or rom simm.
Do you have any idea to solve this problem? I tried to change the ram as normal thing but it's same.
I can't wait to see the happy mac🥹
Posted by: Byrd on 2023-05-05 17:34:44
mindthegap welcome! Looks like a nice clean SE/30 and a nice recap on your part.

Yep, pull the RAM, clean the ROM/RAM contacts, just use 4 x known good working RAM modules to start with. Looks to me more like a ROM seating issue.
Posted by: imactheknife on 2023-05-05 18:58:14
Hey guys I'm macintosh collector from Korea(not north😉) It's my first post on 68K.
Yesterday, I got a SE/30 with an ethernet card from Japanese seller and tried to get power on but no chime, no screen.
So i opened the case. It was pretty clean. (Better than i expected)

View attachment 56153

So I cleaned the board with vinegar and IPA and recapped the main capacitors.
When I powered on, there's chime of death and shows simashi mac.

View attachment 56152


Now I'm finding the cases of simashimac with death chime and I think It's related the ram or rom simm.
Do you have any idea to solve this problem? I tried to change the ram as normal thing but it's same.
I can't wait to see the happy mac🥹
Those look like original caps in that picture. I would clean rom slot, and memory slots with ipa and toothbrush gently. Clean contacts on memory and rom simm with eraser gently and ipa after.
Posted by: mindthegap on 2023-05-05 21:30:12
mindthegap welcome! Looks like a nice clean SE/30 and a nice recap on your part.

Yep, pull the RAM, clean the ROM/RAM contacts, just use 4 x known good working RAM modules to start with. Looks to me more like a ROM seating issue.
Thank u guys now it works!
It's my best day ever
Posted by: imactheknife on 2023-05-06 05:06:34
Sweet😉
Posted by: Byrd on 2023-05-06 15:54:09
Nice work! Enjoy your SE/30 mindthegap
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