On Fri, 27 Feb 2004 at 23:03:55, Ian L. Pine wrote:
(ref: <[EMAIL PROTECTED]>)
>
>> From Tim's description, it sounds like the _video_ ram is the problem,
>> and that is what I was talking about (hence the referral to SGC ram -
>> where the chips have similar leg layout)
>> They are recovered chips supplied by Peter, and they tend to make bad
>> contact in the sockets.
>> Certainly stripes on screen will be video ram.
>
>This is exactly the problem I have with my Q40 (as Tony well knows as he has
>reseated the Video RAMs for me on a number of occasions!) The last fix
>lasted approx. 15 minutes and a subsequent fix I did myself had a similar
>result.
>It was not an inexpensive machine to buy and I haven't had enough use of it
>to be able to afford to write it off just yet. I was wondering if someone
>might be able to come up with a permanent solution, e.g. removing the
>sockets and soldering the RAMs in place; or maybe there are some spare chips
>with longer pins (some of the pins on mine seem too short to be gripped
>properly by the sockets); or perhaps creating a little piggyback Video RAM
>board that could be plugged in somehow. I'm keen to get the Q40 back into
>full time service again. Are those chips still available new?
Send the pcb back to me and I will have a go at removing the sockets.
--
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