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Old 17th Mar 2021, 8:40 pm   #1103
SiriusHardware
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Join Date: Aug 2011
Location: Newcastle, Tyne and Wear, UK.
Posts: 11,484
Default Re: Non-working Commodore PET 3016

Quote:
Remove all sixteen 4108
Spoken like someone who is a skilled and experienced repair person.

That might be a moderately trivial operation for you or I, but for Colin realistically the safest way to get the 4108s out is to destroy them, possibly without any good reason. We can't be sure at the moment whether any of the system RAM is faulty. I would like to be slightly more sure before bulldozing all of the original system RAM.

However, if preservation of the original parts is of less concern and the replacement 4116s are affordable, then of course that is another possible way forward. It must be said that there is a risk that the 16 4116s, wherever they come from, may also have one or two faulty devices lurking among them. Several of us here have bought old RAMs recently only to find one or two of them faulty. It might be wise to have some independent means of testing them if this approach is taken.
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