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Home » Digital Archaeology » Computer Arcana » Commodore » Commodore 8-bit » [WTB] TED 8360 and PLA for Commodore 16/116
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Re: [WTB] TED 8360 and PLA for Commodore 16/116 [message #210408 is a reply to message #210404] Wed, 30 October 2013 12:42 Go to previous messageGo to previous message
George is currently offline  George
Messages: 80
Registered: February 2013
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Computer Nerd Kev says...

> Actually as I understand it, where heat is involved in
> chip failure, leaving the chip on all the time is not
> much more damaging than never turning it on. The stress
> comes from materials expanding and contracting with
> heating and cooling cycles, so if it's on 24/7 it only
> needs to survive heating/cooling during the odd
> blackout. On the other hand, if it were turned on every
> morning and off every night, the stresses could quickly
> cause failure. That's what I read somewhere anyhow...

Yes, I think always-on minimizes the potential problems from
heat cycles, but I just don't think the CBM chips are any
worse than others. In my experience a CBM computer was
usually discovered to be dead when it was powered up. It
was rare for a computer to just die while it was running.
While that could be due to heat cycles, it could also be due
to those collisions I described when power is cut. So I
added the Max690 circuits to mine. Actually, the Max 698 is
cheaper and works the same.
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