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Hi,
I am currently repairing an HK TB36 that burnt its output tubes plate supply tracks. After removing the burnt tracks, connecting the plates with flying leads and using a fresh pair of EL84, the amp will only work on its output pairs. This amp uses an automated bias and tube monitoring system and the mosfets used on its inside pair's cathode are not receiving the correct voltage, hence not conducting.
I need a schematic to go further in the diagnostic and HK can't supply it to me. I have the TM18 schematic but the cathode Mosfet management is different. Does anybody have the TM36 schematic?
I am currently repairing an HK TB36 that burnt its output tubes plate supply tracks. After removing the burnt tracks, connecting the plates with flying leads and using a fresh pair of EL84, the amp will only work on its output pairs. This amp uses an automated bias and tube monitoring system and the mosfets used on its inside pair's cathode are not receiving the correct voltage, hence not conducting.
I need a schematic to go further in the diagnostic and HK can't supply it to me. I have the TM18 schematic but the cathode Mosfet management is different. Does anybody have the TM36 schematic?