[sdiy] Prophet 5 -15v rail is shorting... Need advice

[Roy J. Tellason]

On Friday 09 November 2007 23:01, Gil W. wrote:
> NEWS:
>
> I finally managed to locate a heating MC14016 chip,
> took it out and got stable +14.80v for five minutes.
>
> Then, suddenly to voltage dropped again !!
>
> Am I doing any wrong ? I'm currently running the voice
> board without the CEM and CA chips, to avoid ruining
> them. Is that safe ?
>
> I can't see why ICs will get defected so easily. I
> first thought that the 14016 sponteneouly went bad,
> but now I have the feeling that something knocks them
> up !!

Overvoltage will kill those,  if the previous power supply had gone bad that 
way...

I sure hope for your sake that a lot of that stuff is socketed!  :-)

-- 
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space,  a critter that can
be killed but can't be tamed.  --Robert A. Heinlein, "The Puppet Masters"
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