14-08-2022, 09:56 PM
Well done on acquiring a Prem 128k 
The big earth link between the coreboard and mainboard is standard, fitted to all Premiums. Also, they were normally powered from the floppy disk case which have a Switched Power supply and the original large 4,700uF cap was seen as a short circuit and would turn off. So a much smaller (1000uf ) cap was used. Again standard issue.
The big earth link between the coreboard and mainboard is standard, fitted to all Premiums. Also, they were normally powered from the floppy disk case which have a Switched Power supply and the original large 4,700uF cap was seen as a short circuit and would turn off. So a much smaller (1000uf ) cap was used. Again standard issue.
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ChickenMan
ChickenMan