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SiriusHardware · 13th Feb 2020, 11:37 pm

Phew, what a relief that replacement of the 74LS145 does seem to have made a difference but I am wondering if the socket that the 6520 is fitted in is causing you problems as well - TonyDuell did say that in his experience the IC sockets in PETs can be troublesome.

If it keeps on working, just leave well alone (if it isn't broken, don't try to fix it). But if you do have further problems you may need to consider having the 6520 socket changed and have the solder joints on the keyboard connector resoldered as well.

13th Feb 2020, 11:37 pm	#103
SiriusHardware Dekatron Join Date: Aug 2011 Location: Newcastle, Tyne and Wear, UK. Posts: 11,570	Re: Commodore PET 3016 Phew, what a relief that replacement of the 74LS145 does seem to have made a difference but I am wondering if the socket that the 6520 is fitted in is causing you problems as well - TonyDuell did say that in his experience the IC sockets in PETs can be troublesome. If it keeps on working, just leave well alone (if it isn't broken, don't try to fix it). But if you do have further problems you may need to consider having the 6520 socket changed and have the solder joints on the keyboard connector resoldered as well.