i'm not real familiar w/ these amps. i've got one in front of me that most closely follows this schematic:
http://music-electronics-forum.com/a...0-100w-pwr.gif
R35 is a 100 ohm/5w between a large filter cap and a picofuse. the side at the fuse has left a burn mark
in the PCB. as i understand it... the amp worked one day and didn't the next. when opened, R35 was found
with one side unsoldered (fuse side) and the char marks underneath it. the resistor was resoldered and the amp still doesn't work.
i haven't done anything to the amp yet other than test the power tubes for shorts. i also checked the traces all around the
burn zone for proper continuity and confirmed the 100 ohm resistor's value.
tubes test strong w/ no shorts. traces test properly w/ no carbon bridges. 100 ohm resistor measures 100 ohms.
thoughts?
http://music-electronics-forum.com/a...0-100w-pwr.gif
R35 is a 100 ohm/5w between a large filter cap and a picofuse. the side at the fuse has left a burn mark
in the PCB. as i understand it... the amp worked one day and didn't the next. when opened, R35 was found
with one side unsoldered (fuse side) and the char marks underneath it. the resistor was resoldered and the amp still doesn't work.
i haven't done anything to the amp yet other than test the power tubes for shorts. i also checked the traces all around the
burn zone for proper continuity and confirmed the 100 ohm resistor's value.
tubes test strong w/ no shorts. traces test properly w/ no carbon bridges. 100 ohm resistor measures 100 ohms.
thoughts?
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