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Old 3rd Sep 2020, 6:36 pm   #3
Join Date: Aug 2011
Location: Newcastle, Tyne and Wear, UK.
Posts: 7,533
Default Re: I found it !. A very sorry looking MK14

I'm thinking the white powder may be fallout from the NiCad? NiMH? rechargeable battery.

I would get rid of, or at least replace that at the earliest opportunity, as we have seen terrible damage wreaked upon otherwise well preserved systems - not MK14s, but other retro systems like the Amiga A500, by decomposing rechargeable batteries.

I have a 'Maplin Z80 system' which had been in beautiful condition, but the PCB mounted NiMH battery started to out-gas some sort of vapour while it was in storage: A lot of the IC pins turned malachite green and the pristine white screen printing just drifted off the PCB like confetti when I tried to blow the white 'snow' off the PCB.
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