It is unlikely the transformer is bad, Some of these have a thermal fuse in the windings. Usually failed components overload the power supply and blow the main fuse.
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To AVOID blowing fuses while troubleshooting, put a 150 watt incandescent lamp in series with one side of the power line. The lamp will light if current is too high and save blowing the fuse in the unit. The common problem is shorted filter capacitors, shorted rectifier(s) and shorted transistors in the power amplifier. By using the light bulb in series you can drive enough current into the amp to do troubleshooting without blowing the fuse. The lamp will light and you can test finding where the power supply is being overloaded. The MOST common cause of this is blown power transistors in the power amp. I have tried to find a free schematic diagram for this but haven't found one yet. If you contact Peavey, they will send you one via email.
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so, ihow do i make sure it is not the transformer? how do i change the thermal fuse. i replaced the internal fuse, but it just nurns it again. the two poles forn the ac power have continuity.
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