[sdiy] Bias osc problem

[Tim Parkhurst]

On Sun, Jan 10, 2010 at 6:56 AM, Louis van Dompselaar
<louis at dompselaar.org> wrote:
> As we are on the topic of tapes...
>
> I have a tape echo here with a dead bias oscillator.  As the osc
<snip>
>
> Symptoms: no signal on the secondary side of the transformer
> and transistor running very hot within seconds.  As the transistor
> is operating well within its limits, the running hot is the thing that
> puzzles me most.  Replacement transistors exhibit the same
> problem.
>

Shorted tranformer?


Tim (A shot in the dark) Servo
-- 
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