>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?
** Not unless you use a string of forward biased Si diodes instead of
the zener. .
>I'm not sure why it would have changed.
** the meter accuracy have been compromised. I would check the accuracy
with a DMM and a low-V supply.
>
>- I will order a new meter, should I put a diode across it to protect it in
>the future? What kind?
>
** 2, parallel 3A Si rectifiers, back to back
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