I have a couple of old Triplett 310 VOMs, and a couple of old Simpson 260 meters. I mostly use the small Triplett, because it's more handy, and fits in my toolbox. The last time I used it, I noticed the needle jumping around when I zero the resistance scales. I've eliminated the leads as the cause. My one Simpson does the same thing.
I haven't had the Simpson apart in a while, but I noticed the zero adjusting pot on the Triplett 310 is in plain view when I take the back off. I was wondering if anyone has any suggestions for cleaning the pots on these meters. I have some Deoxit spray cleaner, and lube, that I use on stereo receiver pots, and I would think it is safe to use on the meter pots, and selector switch. Any advice would be appreciated. I'd like to clean up the connections without sending them back to the factory.
JT
I haven't had the Simpson apart in a while, but I noticed the zero adjusting pot on the Triplett 310 is in plain view when I take the back off. I was wondering if anyone has any suggestions for cleaning the pots on these meters. I have some Deoxit spray cleaner, and lube, that I use on stereo receiver pots, and I would think it is safe to use on the meter pots, and selector switch. Any advice would be appreciated. I'd like to clean up the connections without sending them back to the factory.
JT