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Hi There,
I am in the process of repairing the amplifier which appears to be an RCF manufacture but rebranded to different names. The output mosfets on the positive rail had shorted. I have replaced them but when tested with the bulb tester, the bulb lights indicating a problem remains. I have checked the SAP's and they don't appear to be shorted either. Diodes seem to be testing fine in circuit. The only thing that is showing any concern is R37 on the +HV Ref is measuring around 10k. It measures 1m outside of the circuit. R7 on the other hand does measure correctly. Essentially my guess is there is still a short somewhere however when going over the resistors nothing stands to be shorted or way out of range. Does anyone have an idea of an area I should potentially look at to focus on. The resistors in circuit around the mosfets are measuring as per the schematic.
Thank you for your help in advance.
I am in the process of repairing the amplifier which appears to be an RCF manufacture but rebranded to different names. The output mosfets on the positive rail had shorted. I have replaced them but when tested with the bulb tester, the bulb lights indicating a problem remains. I have checked the SAP's and they don't appear to be shorted either. Diodes seem to be testing fine in circuit. The only thing that is showing any concern is R37 on the +HV Ref is measuring around 10k. It measures 1m outside of the circuit. R7 on the other hand does measure correctly. Essentially my guess is there is still a short somewhere however when going over the resistors nothing stands to be shorted or way out of range. Does anyone have an idea of an area I should potentially look at to focus on. The resistors in circuit around the mosfets are measuring as per the schematic.
Thank you for your help in advance.
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