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Identify brand of switch

PETERDECO

Dec 19, 2019
239
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Dec 19, 2019
Messages
239
Welcome. What are we looking at? Make and model. What makes you think you have to replace the switch?
 

Skydeaner

Apr 12, 2021
3
Joined
Apr 12, 2021
Messages
3
Haha I dunno why I typed triangle.
Definitely a diamond...
It's off a focal brand car audio amplifier and there is corrosion on the inside and the slides arent making contact with the pins most of the time.
 

Skydeaner

Apr 12, 2021
3
Joined
Apr 12, 2021
Messages
3
Yeah I tried that, and acids. There is enough crap in there I can still feel it and I'd rather just swap it out. I've got it off the board now and taken apart and was able to get it cleaned through sheer force of scraping and grinding and put back together. Works fine now. I'd still like to know who makes them, I have 4 more on this board I have to do and they are all corroded after about 4 years. There are 4 other switches on the board from a different manufacturer (that have been in the same environment of course lol) that aren't corroded at all. Makes me want to find the manufacturer and send them a hate email lol.
 

dave9

Mar 5, 2017
1,188
Joined
Mar 5, 2017
Messages
1,188
You need better humidity control in the vehicle. While they are apart, after cleaned I would tin the contacts with silver solder, if I couldn't find suitable replacements, and put some dielectric grease in it.

Brand may not mean much. If this is not a somewhat standard switch, it might have been made custom for the amp manufacturer. If it is somewhat standard, go to an electronics supplier like digikey and use their parametric search for switches with same # contacts, mechanical mechanism, size, etc.

Since you'd have to take the switch off the board anyway, you should have taken it off and then provided pics.

Another option is to map out the switch positions and pins going open and closed circuit with each position, then put panel mount switches on the amp casing to use instead. I'd strongly consider that if after all the work you'd have to do, then only expected 4 years additional service. Another option - presuming you always keep the switches in the same position appropriate for this application, simply leave the switch in place and solder jumper wires between the appropriate contacts so the switch contacts don't need to conduct well. Maybe also put a blob of epoxy on the switch knub so it can no longer be moved.

As long as the switch contacts aren't gold plated (then probably just need hardened grease removed with a solvent), one of the easier ways I've found to clean up corrosion and old hardened grease is to put a cotton swab in a rotary tool (on lowest speed) and brasso metal polish on the swab. Brasso (and some other) metal polishes have the slight abrasive, oxalic (or other) acid, and a petroleum solvent, then I just scrub remaining residue away with a toothbrush and IPA or detergent solution then water rinse.
 
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