Continued work on SB-200

[Mark Graalman WB8JKR]

 Sounds like you have a shorted switching transistor or a
wiring error in the soft key mod.


Mark  WB8JKR


On Sat, 15 Mar 2003 21:04:32 -0800 Jan sluchak <jsluchak at PACBELL.NET>
writes:
> Hello to the group,
> I have now installed Measures improvements to an SB200 that I am
> restoring.   A soft key from harbach has been reinstalled
> Several issues now exist that I could use the groups council on:
> 1.  The relay now does not release when keyed.
> 2. At key down, with no drive, the meter indicates negative grid
> current. I had this issue on an sb221 and discovered a grounded
> zener
> diode, but I don't know where to start here.
> 3. Plate current at no keydown and with keydown with no drive is
> 100ma.
>
> What's a good next move?
> Thanks
> Jan  N6YV
>
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