[Amps] TL922 Kessler Mods

[don]

Natan,

As I described on the phone, when the amp is unkeyed, it shouldn't have any 
anode current.

Either the bias transistor or its parallel glitch diode has shorted.  These 
are fairly easily replaced.

Thanks,
Don


On Wednesday 21 February 2007 12:18, Natan Huffman wrote:
> Hello all,
>
>
>
> I have a TL922A with all the Kessler Engineering mods that was recently put
> into service.  I've noticed the amp is generating a lot of heat while not
> transmitting, in fact in the CW position, it's drawing 100 mils IP.  I
> don't remember the amp pulling this much current when just sitting there
> before, but perhaps I was inattentive.  It has normal power output and
> tunes just fine, but the heat is significant.
>
>
>
> Shouldn't the resting current on the tubes be 0? Is this an indication the
> 3-500Z are failing?
>
>
>
> Thanks,
>
>
>
> Natan W6XR
>
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