wd40, NO. But I had used it to free it up a frozen volume control on an old (antique?) table radio. But later flushed it out with a regular contact cleaner. I have had very good results using Radio Shack's Tuner Cleaner.
I think wd40 was used in my used ebay preamp volume control. Sure smelt like it. Scratchy, dirty, hard turning gunked up. Radio Shack being no more, I used this cleaner that the mechanics use on our helicopters. I think it was the GC that was mentioned. Pilferage but they won't miss a few squirts. And not being in the repair business anymore, I didn't want to spend $12.00 for one use.
I hesitated on using De-Oxit in potentiometers. It might mistake the carbon film as oxidation and deox it. External connections, great.
I think wd40 was used in my used ebay preamp volume control. Sure smelt like it. Scratchy, dirty, hard turning gunked up. Radio Shack being no more, I used this cleaner that the mechanics use on our helicopters. I think it was the GC that was mentioned. Pilferage but they won't miss a few squirts. And not being in the repair business anymore, I didn't want to spend $12.00 for one use.
I hesitated on using De-Oxit in potentiometers. It might mistake the carbon film as oxidation and deox it. External connections, great.