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Old July 2nd, 2009, 02:49 PM   #3 (permalink)
Wally
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Join Date: Mar 2003
Location: Lubbock, TX
Posts: 6,010
Dave, you can go here.....
http://www.superchamp.dk/papers/dati..._tube_amps.htm
and find the year of manufacture of that amp using the serial number that is stamped in the rear panel of the chassis.
Papa Joe has given good advice. Since the other heater filaments are working, the probelm lies in the connection to the socket, the socket itself or....the tube, right?
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