[Central-Electronics] Whew!

[Kannegaard]

Great sleuthing.

Jon, K6JEK

On Jan 5, 2006, at 6:29 PM, K3PID wrote:

> I was sure I did a good job of replacing the Caps and cleaning it up 
> but
> when I powered up the 20A the relay would not drop out. After checking 
> the
> audio amp and the audio rectifier I couldn't find anything wrong 
> except that
> the 12AT7 (c) was in conduction all the time because the bias voltage 
> was
> way low. After removing components one at a time to find the cause, I
> finally found that the 12 KOhm coil on the relay had 50K to 
> ground...... It
> measured 12K OK but the coil read 50K to ground so it was pulling way 
> to
> much current thru the supply resistor. Turned out to be a short in the 
> fiber
> insulator that separated the finger that fed the coil from the 
> frame....
> whew! Works fine now! Now I can get on with the rest of the circuit....
> Maybe I'll get it on the air this weekend!
>
> K3PID
> Ron H.
>
>
>
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