Hi All tech boffins.
I have a 925r which drops the audio when i pass 30% on the volume control.
Before switching on I soldered main pcb complete, loads of dry joints.
HELP please as this is an incredible amp.
another question, why do the front control pots have a second function.
I found this when i wanted to remove them to clean up.
Thanks and best regards
Colin Cape Town SA.
I have a 925r which drops the audio when i pass 30% on the volume control.
Before switching on I soldered main pcb complete, loads of dry joints.
HELP please as this is an incredible amp.
another question, why do the front control pots have a second function.
I found this when i wanted to remove them to clean up.
Thanks and best regards
Colin Cape Town SA.
Google translate tells me this person had the same issue with a PMA925R and it was due to bad electrolytics, in that case it appears the primary suspects were C704 and C703.
If replacing those works I'd suggest replacing the remainder of the electrolytic capacitors, too.
Video: YouTube
Service manual: https://www.google.com/url?sa=t&sou...FjAAegQIBBAB&usg=AOvVaw129kKbViTvvUVBAIntyHfE
View attachment 801908View attachment 801909
If replacing those works I'd suggest replacing the remainder of the electrolytic capacitors, too.
Video: YouTube
Service manual: https://www.google.com/url?sa=t&sou...FjAAegQIBBAB&usg=AOvVaw129kKbViTvvUVBAIntyHfE
View attachment 801908View attachment 801909
