Posted By
Hendriks
on 2019-08-26
05:12:35
|  Re: Plus/4 black screen : TED, CPU, PLA, and ROMs are good
An update to this topic as promised: I desoldered the RAM chips and put them in sockets. It turns out three of them were broken. I got new ones on eBay (new old stock), and now the machine is running again. Desoldering and soldering was a bit tricky as first, but I went slow, carefully, and methodical. It was actually a lot of fun, and I'm sure I'll be doing it again.
Thanks for all the help and suggestions.
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