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Post by mauro on Nov 2, 2018 2:02:28 GMT
I'm working on an amplifier from a model JAL200, the 1K 1W resistors around the multi-section filter caps were both burned up. I've rebuilt the amp and would like to bench test it before giving it back but I'm not sure if I need to jumper anything to do this. The schematic doesn't help. I know exactly what to do on Seeburg and Wurlitzer amplifiers to test them but am lost on this one. Im hoping that someone who is familiar with these amps might help me out. Grateful for any help here, Mauro
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Post by robnyc on Nov 2, 2018 5:42:32 GMT
Mauro, nothing needs to be jumped. You might try applying around 24VDC to the mute-squelch relay to check the AGC & B+ action if you have the preamp and are going in through the phono inputs.
BTW: E1-E4 are the 25 watt @ 8 ohm taps for speakers.
RobNYC
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Post by mauro on Nov 3, 2018 2:31:43 GMT
Thanks Rob! It worked perfectly. Amp sounds great. Till next time, Mauro
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Post by robnyc on Nov 3, 2018 3:57:57 GMT
It is always nice when things work right-off.
Rob
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