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Old 08-17-2015, 08:33 PM
Captainclock Captainclock is offline
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Join Date: Dec 2013
Location: Elkhart, Indiana
Posts: 1,189
Quote:
Originally Posted by dieseljeep View Post
Go to an auto supply store and get a can of brake cleaner. Be careful and use it in a well ventilated area, as it's some nasty stuff. Also, be careful around plastics, as it will cloud or discolor them.
Checking voltages, you have to have the amplifier powered on. If you want to be sure that there wont be further damage to other components, remove the rectifier tube, probably a 5Y3.
Yes the Rectifier is a 5Y3GT tube, but anyways I measured the voltage on the heaters for the 12AX7 tube and it measures at around 104 volts which I'm assuming is what its supposed to measure (I don't have a service manual for this unit so I don't know what the voltage is supposed to be exactly) and all of the other tubes glow like they're supposed to its just the 12AX7 that doesn't glow for some reason or another (unless the shorted 5Y3 that was in this thing originally took out the 12 Volt winding in the power transformer...)
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