We recently had a very severe thunder storm with tremendous lightning strikes
occurring a few miles from my QTH. I did not suffer a direct hit but the sky
was full of electricity. Unfortunately, this amp is used at a station I have
in one of my horse barns and I was unable to get to it to disconnect the AC
and the antenna. (The antenna still works fine).
After the storm passed my TL-922A amplifier ceased to work. Here is what I
have observed with the amp after the storm:
-No blown fuses.
-HV is normal.
-Idle plate current is normal.
-No burned smell anywhere.
-All switches and controls seem to be normal.
-Change over relay appears to function normal.
When I close the changeover relay and apply drive nothing happens. The
exciter is working properly.
I have not removed any panels to investigate the trouble but my problem
appears to be in the input circuit since everything else seems to be OK. This
weekend I am going to remove the panels and begin troubleshooting the problem.
I
just wondered if anyone familiar with this amplifier might have a suggestion
as to where to start or if anyone else has had this problem. In 20 years of
use, this is the first problem I have ever had with the TL-922A.
Thanks you for any suggestions or recommendations.
HNY in 08.
Tom Neill
K4XG
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