Had anyone encountered Right Speaker Output Channel with the presence of 450mV DC ? I compared at the Left Speaker Output Channel, it was Zero mVDC.
Worry.... ...Speaker Voice Call might be hurt with the presence of DC Voltage at Right Channel Speaker Binding Post at idling state !
Note: The above was checked WITHOUT connecting :-
1. Speaker or Dummy Load
2. Volume Controller set at minimum or zero.
3. No Audio Input Source into CD port.
I guess something was at fault on Right Channel......
Need help to advice me where to check and rectify this adnormality.
Thanks in advance.
Peter.
Worry.... ...Speaker Voice Call might be hurt with the presence of DC Voltage at Right Channel Speaker Binding Post at idling state !
Note: The above was checked WITHOUT connecting :-
1. Speaker or Dummy Load
2. Volume Controller set at minimum or zero.
3. No Audio Input Source into CD port.
I guess something was at fault on Right Channel......
Need help to advice me where to check and rectify this adnormality.
Thanks in advance.
Peter.
First measure the offset with a 10R resistor connected to the speaker output
instead of open circuit. The offset may go away. If not, there is no adjustment.
instead of open circuit. The offset may go away. If not, there is no adjustment.
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Agreed - put a load on it (just a speaker will do) with zero signal and remeasure...
If still present check/confirm all supplies.
Confirm R130,131,230,231 are all intact
For just one channel offset I've had problems with the various daughter preamp and pre-driver modules on this model (you can unsolder (carefully - the print is easily damaged in these areas) and swap over to confirm/eliminate), and of course small value electrolytic caps near heat sources.
If still present check/confirm all supplies.
Confirm R130,131,230,231 are all intact
For just one channel offset I've had problems with the various daughter preamp and pre-driver modules on this model (you can unsolder (carefully - the print is easily damaged in these areas) and swap over to confirm/eliminate), and of course small value electrolytic caps near heat sources.