Steve Sousa wrote in message
anews.com...


"N_Cook" wrote in message
...
If the 900 ohm one was shot then it implies some shorted turns that is
unlikely to change with heat and/or vibration



Hello:

the amp is a grundig como e/st, you can see a picture and the schematic at
http://meuble.radio.free.fr/stereo_c...dig/index.html

i haven't removed the transformers because they are soldered to the
chassis!
(the metal bracket is soldered to the chassis *and* the pcb)



What is the result of hot-air heating and knocking the transformers with
copper/hide hammer or simulating with hammer and wood block while monitoring
the ohms?
Certainly don't power up with new valve without using a variac and probably
filament bulb telltales(acting as fuse if serious problem) in place , if you
cannot establish which Tx is wonky.