>Folks -
>
>I finally got a chance to accurately measure the resting plate current on my
>AL-1200 (See below) - its 12ma on CW (supposed to be 40) and 88 on SSB
>(should be 150). Does this sound like bad Zeners?
>
** A shorted zener raises the ZSAC. would measure the filament CT to
ground V to see what's what.
cheers, Dana
>
>
>Dana Roode wrote:
>> Folks -
>>
>> My AL-1200 repair efforts continue. As you may recall, the parasitic
>> suppresser came unsoldered and I had some sort of oscillation in the
>> grid that took out the grid resistors, a resister in the grid meter, and
>> my 756ProII. It turns out it also took out my ARB-704 relay buffer, and
>> last weekend the grid meter mechanism itself gave up the ghost.
>>
>> Questions:
>> - After replacing the grid resistors, the resting plate current seems
>> too low, maybe half of what it should be. Is there an adjustment for
>> this? I'm not sure why it would have changed.
>> - I will order a new meter, should I put a diode across it to protect it
>> in the future? What kind?
>>
>> Dana
>>
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>>
>
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