Decades old new old stock (NOS) relays?

rupes2

rupes2

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I saw someone selling NOS relays that are the correct part for my Yamaha CR-600 for $5 and ordered one.

I realize that the Omron MY2-02-DC12 is the modern replacement and I assume it offers better reliability? I did not fancy drilling the PCB or adding wire legs to make one fit. If this does not work out I will design an adapter PCB to go from a MY2-02 relay to MX2P PCB holes.

What is the general consensus on old (I assume decades) NOS relays? Before I fit it should I remove the cover and clean the contacts? By clean I mean gently wipe with card soaked in DeoxIT and then clean with 99% IPA? Or will it be it fine as long as it was stored properly?

The date code on the NOS relay is 2136YH but there is no way to know what decade the 6 is for. When did Omron stop making the MX2P series and replace it with the MY2-02 ?
 
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I wouldn't have no problem using a 50 year old part, but I would look at the contacts for oxidation. your thinking is aligned with mine. relays get damaged from use. flipping them on and off with current flowing
 
Thanks @RalphRaccooN. I believe the contacts are silver plated so it is tarnish I am worried about which DeoxIT should remove.
 
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I ended up reaching out to the seller who said he had sold many of these relays and had no complaints. So I put it in without removing the cover and cleaning the contacts. It works great.
 
avionic said:
Easier to file down the pins a couple thousands of and inch with a jewelers flat file. Takes a whole 5 mins.
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Thanks @avionic. Can you explain what you mean by this. I was basing what I said on this post about putting an MY2-02 in a CR600. If you scroll down a bit there is an image showing how the pins of the MY2-02 line up with the PCB holes.
 
In Canada at least "Motomaster Electrical contact cleaner", or here in the Netherlands "WD-40 SPECIALIST Contactspray" will do fine and is "dead cheap" and available everywhere! And yes there are depending where 'you' are probably a zillion other cheap contact cleaner products / brands of this type of product; but except for these two, I haven't tried them out to see if they are safe for fine electronics and plastics / "HiFi" gear. :dunno:See photo attached.

1000009942.jpg

I use this this " WD Specialist contact spray " for selector contacts switches. Relays contacts, push and toggle switches, connectors etc. Applied spraying or on with a cotton stick or Pipe cleaning brushes etc

For fader / slider switches and carbon track potentiometers / pots, I still exclusively use Deoxit fader FS. My two cents!
 
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