Hey Everybody
Ok I just got this old Univox solid state amp from the early 70's. Its kinda in good shape, with a spring reverb and tremolo and 2 ten inch speakers.
BUT there is a CONSTANT hum when I turn on the amp, with or without a guitar plugged in. Its quite loud. I have attached a schematic of the U150RX which is close enough to my U150R model.
So far I have replaced the power supply capacitor (the 2200 uf and 35V one, {the schematic says 2000uf but that wasnt what the actual part said}) and cleaned all the contacts.
Does anybody have any suggestions to what it could be? Should the amp become parts? THANKS
Ok I just got this old Univox solid state amp from the early 70's. Its kinda in good shape, with a spring reverb and tremolo and 2 ten inch speakers.
BUT there is a CONSTANT hum when I turn on the amp, with or without a guitar plugged in. Its quite loud. I have attached a schematic of the U150RX which is close enough to my U150R model.
So far I have replaced the power supply capacitor (the 2200 uf and 35V one, {the schematic says 2000uf but that wasnt what the actual part said}) and cleaned all the contacts.
Does anybody have any suggestions to what it could be? Should the amp become parts? THANKS