Cleaning push piano switches

[aztecboy]

I hope I have the name correct for these switches.

These are the TRIGGER push piano type switches on my old Philips scope and are very intermittent. I have flushed them out with IPA a few times now. It works for a while and then the issue returns and I lose trigger again. VERY gently wiggling the switches (more so the Ya and Yb) clears it and I get trigger back but it is not ideal.

Does anyone know of any method for cleaning these piano switches?  I am really hoping I don't need to replace them all!

Many thanks in advance.

Ted
2E0THH

[frozenfrogz]

Teslanol T6 is my go-to de-oxide spray.

Here are some photos I took while refurbishing a switch that is not source-able anymore.

p1 + p2 switch overview
p3 - p5 contacts after disassembly
p6 - p9 after applying Teslanol T6
p10 - p12 after polishing with a leather wheel

[aztecboy]

Thanks frozenfrogz

Those really look amazing although I don't think I can easily dissamble these switches without some serious desoldering.
I'll try and find the de-oxide spray you recommend, do you think it may work with just exercising the switches in place after spraying?

[frozenfrogz]

I just took pictures of this because I was curious as to what the de-oxide actually does, how effective it is on its own. I was pretty impressed!
Also, the spray leaves a thin lubricating residue. I usually just spray scratchy pots and switches with this.

In the pictures you can see, that it got rid of a lot of crud and oxides by simply spray-washing the contacts without even touching anything.

Just flood your switches with this and actuate it a couple of times.