I agree DeoxIt is a great product.
and learn more about it.
Our Xerox tech (he uses it on HV ps and all connectors) gave me some to try on my older
kenwood 520 and 530, nice and quite pots and no more
pops when you push the switches. Band switches clean.
so-239 looks like it is new again.
Yes, it is a little more expensive the other cleaners,
the DP5S-6 product, it is a pump spray (no voc content so no hazmat ups fee) and will last a long time.
It goes a long way, just a little drop is all you need.