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Author Topic: Guitar Amplifier ALESIS BASS 125 EQ  (Read 318 times)

julio daniel

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Guitar Amplifier ALESIS BASS 125 EQ
« on: November 02, 2020, 10:40:29 AM »

Hello everyone. I come with you to ask for help, in this case for a bass amplifier ALESIS BASS 125EQ, which has an output amplifier similar to the HH-IC-100, after some measurements and having not detected any damaged component, I come across an oscillation at the output of (12.8 Khz), with an amplitude of 23.5 Volts, after checking the power board and components, I did not detect any anomaly, I even changed the input integrated one LM741, for a NE5534, the result was same.
I don't know what else to do, the components appear to be OK, but then the result is disastrous.
I thank you in advance for your precious help.
Best regards

Julio Daniel