"Phil Allison" wrote in message ...

"François Yves Le Gal"

was right, there's a pair of 30K and 2K7 10 Watters next to each other.

I would do a thorough check on the amp: the two resistors are B+ droppers
for the preamp/phase splitter and shouldn't dissipate more than 3 or 4
watts. If a 10-watt R has burned, something must be very wrong somewhere
else.



** Nonsense.

That POS 30 kohm resistor Fender used runs very hot, cracks apart, unsolders itself and eventually fails completely in normal
use.

Best to replace it with a 50 watt "metal clad" type, bolted to the chassis.

Well, by the voltages on the schematic the 30K dissipates over 5W, so a 10W
resistor is under-rated and should be replaced by a higher power unit. An ordinary
25W device should do if there is adequate air flow to cool it, else a bolt-on metal
resistor as Phil suggests would be a better solution.

But the resistor that burned in this amp was the 2.7K 10W that normally only
dissipates about 2W. If the following 2.2K 1W isn't also burnt, about the only
likely culprit would be a leaky or shorted C116, the 22uf 450V cap at that point.
Once that's fixed, another 2.7K 10W replacement should be fine.

Regards,
Fred

Eg:

http://au.farnell.com/jsp/endecaSear...jsp?SKU=345726



....... Phil