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Vintage Synth Repair

Index last updated: 2026-04-28 23:41 UTC

Message

Re: JX8P restarts and freezes. Hot circuity...

2006-08-07 by gil_we

It takes about half an hour.

I'm not at all sure it ws there before I took the boards apart and 
painted the machine. 

To make sure it is not a short caused when assembling the entire unit,
I connected ONLY the main board voltage line to the PS and it still 
got heated as well.



--- In vintagesynthrepair@yahoogroups.com, "Roy J. Tellason" 
<rtellason@...> wrote:
>
> On Sunday 06 August 2006 04:19 am, gil_we wrote:
> > I noticed that the two CPUs are rather hot (but that could be
> > normal?). What doesn't seem normal to me is the four 8253 ar also 
very hot.
> 
> How long does it take before this problem shows up?
> 
> First thing I'd do is check the power supply voltage,  and see what 
you have 
> there,  it sounds to me like it might not be at the proper level.
> 
> -- 
> 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"
> -
> Information is more dangerous than cannon to a society ruled by 
lies. --James 
> M Dakin
>

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