Make sure your RAM SIMMs are ok, and you have at least 4 matching SIMMS in stalled.
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SE/30 no chime or video (MLB issue)
- Thread starter elemenoh
- Start date
Check all signals on the RAM sockets and trace them to their destination.
Often you get broken traces around the resistor network next to C1.
The RAS and CAS lines run through there - if one of those is broken you will get slow chimes.
Sidenote: we should find and establish new names for the different faulty screen outputs. People use simasimac no matter what the screen is actually showing... no ROM stripes, broken data line grey screen with artifacts, different states of video logic failure... they are all different and usually give hints where to look first when hunting down the problem.
Often you get broken traces around the resistor network next to C1.
The RAS and CAS lines run through there - if one of those is broken you will get slow chimes.
Sidenote: we should find and establish new names for the different faulty screen outputs. People use simasimac no matter what the screen is actually showing... no ROM stripes, broken data line grey screen with artifacts, different states of video logic failure... they are all different and usually give hints where to look first when hunting down the problem.
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@desertroutI need to double check, but I think this one (and a bunch of other boards) recovered after an ultrasonic clean. I recently got a tank and it recovered 6 boards that were previously full of gremlins despite lots of manual washing. Totally worth it if you work on MLBs regularly!
Cool. Which tank did you get?
