[Coco] 2 wasted cpus?

[camillus Blockx]

It could also be the sam chip ( MC6883 Synchronous Address Multiplexer) that
is the collpritt. Try to press it deeper in its socket if it has one. Press
also all other chips that have sockets. It is common that chips in sockets
tends to creep up because the device gets warm and cools when shut down,
and then gets warm again by use. The warming and the cooling makes the
chips crimp and expand, with creeping up as a result.

Hope this works

cb


On Thu, Mar 7, 2013 at 12:26 AM, Retro Canada <retrocanada76 at gmail.com>wrote:

> all pins make contact. the cpu is just warm.
>
> Sent from my iPhone
>
> On 2013-03-07, at 1:20 AM, camillus Blockx <camillus.b.58 at gmail.com>
> wrote:
>
> > The making heat is not so good, are they getting HOT or just warm?
> >
> > HOT means most of the time short and dead. Warm after runnung for  time
> is
> > ok.
> >
> > Did you place the socket the right way, and plug in the cpu right and
> > straight in the socket? Check each pin of the cpu if they really make
> good
> > contact in the socket.
> >
> > Check everything over again...goodluck
> > cb
> >
> >
> > On Thu, Mar 7, 2013 at 12:02 AM, Retro Canada <retrocanada76 at gmail.com
> >wrote:
> >
> >> just got my 2 mc68b09e cpus from jameco. removed the defective cpu from
> my
> >> coco2, installed a machined socket but when i test both cpus all i get
> is
> >> garbled screeen. with vdg checkerboard and at signs. the same if i
> remove
> >> and turn it on without the cpu.
> >>
> >> i checked the continuity on all pins seems fine. cpu is receiving 5v and
> >> making some heat.
> >>
> >> so did i get 2 busted  cpus?
> >>
> >> Sent from my iPhone
> >>
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> >
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