Marantz 1090 - lost channel on loudness

[Clenxi]

Hi! didn't found that problem on the forum and asking for help.

I bought some months ago that 1090 (gourgeus machine) with 2 problems. The first was some noise and parasitic on both channels (solved updating some little transistors on the pre-amp board QE05-QE08). Second problem is when i turn the loudness, the left channel is totally missed, of course i've deoxit all switches specially that tone selector.

Any ideas? thanks and excuse my english

 

[Hoewieloewie]

Hello. Most of the times, loudness is connected to the volumepot. Maybe a wire is not connected well?

 

[Clenxi]

Duplicate

 

[Clenxi]

Hello. Most of the times, loudness is connected to the volumepot. Maybe a wire is not connected well?

Thanks for answering @Hoewieloewie, i think there isn't cables connected to the colume pot on that amp, but will check it later. Thanks

 

[Clenxi]

Hi again @Hoewieloewie, there isn't cables connected to the volume pot but i found that on the service manual (image) but can't find it on the amp . Will recheck it later today, thanks anyway.

 

[Hoewieloewie]

Hello. Possibly the volume pot is soldered directly on the print. Then you have to check if the connections are still okay. Sometimes, because of age, there are loose or bad ones.

 

[Clenxi]

Hello. Possibly the volume pot is soldered directly on the print. Then you have to check if the connections are still okay. Sometimes, because of age, there are loose or bad ones.

Thanks for replying @Hoewieloewie , just checked and resolder connections. Still doing the same…