Zaza would start with the 12Volt-regulated at testpoint TP3 on the powerdriverboard.
It should be exactly 12V at startup.
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The 12V-reg seems ok.
The 10-optoboard can create strange readings in the switch matrix when the capacitor on this board is leaking. Just unplug J3 to exclude this.
Quoted from mikoz:4 boots with no issues!
That is great news, glad it solved the problem.
Quoted from mikoz:Is there a market for these old boards that need to be fixed?
The original boards can be fixed. You can keep them as spare parts or sell them when repaired.
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Wilmington, DE
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