audioflyer
No going back once you heard a ceramic cartridge
A&R A60 I can hear a buzzing noise coming out of the speakers even with volume turned down.
I'm currently servicing my A60 replacing the 40 plus year old capacitors and fitted a new set of pots.
It serial number indicates it's a MKII version but it uses BFRxxx transistor instead of the ZTXxxx devices.
One thing the always bothered me was a low level buzzing coming from the speakers ever when the volume is turned down. Even with all the capacitors changed the buzzing is still there?
In the service manual it mention about changing the smoothing capacitors if there is a low buzzing noise from the speakers. I've tried two sets of smoothing capacitors and it made no difference?
It's like there is an earth loop in the power amp sections did A&R do any modification to rectify this issue?
I'm currently servicing my A60 replacing the 40 plus year old capacitors and fitted a new set of pots.
It serial number indicates it's a MKII version but it uses BFRxxx transistor instead of the ZTXxxx devices.
One thing the always bothered me was a low level buzzing coming from the speakers ever when the volume is turned down. Even with all the capacitors changed the buzzing is still there?
In the service manual it mention about changing the smoothing capacitors if there is a low buzzing noise from the speakers. I've tried two sets of smoothing capacitors and it made no difference?
It's like there is an earth loop in the power amp sections did A&R do any modification to rectify this issue?