03-20-2022, 09:11 AM
Glad you asked, Mike. I'm working on a Grundig SO 121 U/a balance control. It's a 1960 AM FM Phonograph stereo but the radio is mono only. The balance/volume is a dual control. Center shaft is volume and works fine. Outer shaft is balance and doesn't move. Being a Grundig, the controls are pretty much sealed but I'm spraying cleaner on it. I think it's the shaft that is the culprit. The last Grundig I had was the same and it came loose with alcohol, which I will try next. Getting alcohol into the sealed control is difficult. Any suggestions or comments are appreciated.
