If you had enough current through a primary winding of T10 to burn it,
then R961 is likely cooked as well.?
Not sure why you have so much voltage gain between TP4 and TP5 if T10 is damaged.
Perhaps probe a bit more around there and see if things are balanced.
That RF probe should the show the same voltages on pins of Q92 and Q96 when transmitting.
Should see the same DC voltages too.
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On Thu, Jun 9, 2022 at 04:58 PM, Jerry Gaffke wrote:
T10 discolored?? As in burnt insulation?
The TX node is 12vdc during transmit, so a short to ground at TP5 or TP6 would indeed cause some discoloration.
