I begin to repair my 537 EQ.
At the output i have constant buzz only and after two minutes power transformer starts being really hot...
Disconnected transformer has proper AC voltage. I swapped rectifier diodes, voltage regulators.
Checked all diodes and transistors in the circuit, swapped all opamps except LF356 which seems to be fine.
Proper schematic attached.
Any ideas or tips what's going on?
At the output i have constant buzz only and after two minutes power transformer starts being really hot...
Disconnected transformer has proper AC voltage. I swapped rectifier diodes, voltage regulators.
Checked all diodes and transistors in the circuit, swapped all opamps except LF356 which seems to be fine.
Proper schematic attached.
Any ideas or tips what's going on?