Ade Vickers wrote:
> Tony Firshman wrote:
>
>> Ade Vickers wrote:
>>> Possibly - but would a connector give up when the chip had been
>>> undisturbed for ~10 years?
>
>> Indeed it could. Corrosion is likely on the exposed areas,
>> and this chip gets pretty hot, so can migrate.
>
> OK. I'm pretty sure the CPU is ok, because it works fine in another machine.
> Is there a simple way to clean the socket which doesn't involve desoldering
> it?
You could use contact cleaner lubricant. However *if* there are poor
contacts due to weak 'springs' then a new socket is th eonly answer. I
am clutching at straws of course, 'cos it may well *not* be the 68008
socket!
>
>> It is worth cleaning legs of the chip (hard rubber), checking
>> pins are striaght, and then removing/replacing a number of times.
>>
>> I assume J1 (expansion connector) pins are OK?
>
> I think so - I will dig the old girl out of her box this afternoon and
> check.
>
>> If it is the original membrane be *very* careful. Tails will
>> break easily. I bet when (if) it starts up, some keys will not work!
>
> Not original - I've used 3 membranes over the last 20 years - I now have one
> of the new RWAP ones, so I'm hoping for years of trouble-free service from
> the keyboard from now on.
Ah so it is *not* an original QL then (8-)#
Tony
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