Actually i do know how to use a multimeter and i could borrow one... but i have never tested a potentiometer. should i follow the response in voltave of the output while im acting on it?

The balance slider is working properly... sometimes the volume is good on both of the channel, sometimes it is not working. I suppose it is due to the potentiometer, but i do not know how to check it...

i already read that post, and there is no hint on my problem...

Hi everybody, i bought some months ago a BeoMaster 901. Right now i do have a problem with the volume regolation. The right chanel work fine but the left one is not working properly. The volume is really low till around 6 on the scale and then start to work properly. What could it be? Thanks, Roberto