I went through similar replacing the RF PA drivers about 15 years ago. One
thing to watch with the PA circuit board is the holes that are plated to
connect the foil on one side to the foil on the other side. The plating may
fail resulting in a bad connection. This happened with my TS-930 with the
bias circuit of the drivers which resulted in failure of the drivers. A
small wire through each hole that is soldered on both sides has kept my
TS-930 problem free since.

wrote in message
ups.com...
What is the problem with this TS-930 ? ?

I just repaired one of these heavy solid-state boatanchors.
And I need the service manual also, but have most of the schematics.

I replaced the RF PA drivers ( NTE236 ), power supply pass
transistors ( 2N3771 ),
re-worked the cooling fan circuits.



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