Usually there's information printed on the plastic cover of the relay. Failing that, you can measure the voltage to the coil to determine that spec, then buy a 3PDT relay that fits with a coil of the same voltage and the highest contact rating you can get. Failing that, you can jury rig a 3PDT relay. You'll need to figure out how the existing relay is energized - sort of reverse engineering the circuit.
Ed
I got a (huge) Yorx receiver at an auction. I paid a whopping $2 for it. It's a huge receiver with a real wood (plywood) cabinet. It comes with AM-FM radio, casette, and of course amplifier. When I plugged it in, nothing happened, but all of a sudden the dial lights lit up, but went back off. After opening it I discovered that there is a relay on the board that was showing some arcing and a little smoke. I took the plastic cover off the relay and momentarily forced the contacts together. That is when I heard some sound form the speakers and the whole dial lit up. I decided to risk blowing something by jamming a plastic knife into the relay and forcing the contacts together.
I found the radio works, the tape deck is dead, and the amplifier has awesome sound with a deep and clear bass. I know Yorx is no top of the line stuff, but this receiver was likely one of their own top of the line receivers. Its probably from the 80s, and it's well built. I dont need the tape deck, and really dont care much about the radio either. I just want the amplifier, which is far superior to the stereo I have been using, on the same speakers. At the same time, I don want to spend a lot on it.
Aside from the dead tape deck and one broken knob on the front panel, all I need to bring life back to this power amp is that relay. The relay appears to be a triple pole double throw (nine contacts), plus the input. However, it's soldered to the board, so I will need one that fits, not to mention that I have no idea what the imput voltage is, and it looks like there are more than 2 feeds to the input. (hard to tell for sure due to all the contacts on the board near it).
From what I ma seeing, it looks like this is NOT a relay on the AC (home outlet) cord, but rather is after the transformer, rectifier, and some other stuff. This makes me believe that the purpose is to shut down the whole receiver upon overload, to protect the output chips. (This unit has a large output with lots of heatsinking.). Because of this, I thought it would be best that I not just bypass this relay and put a switch on the power cord.
Here is the problems
Can anyone help with identifying this receiver? Or supplying a website for Yorx? Or determining the relay to get, and where? If I can ID it, I'd hope to get a schematic....
This thing has one hell of a powerful and clean sounding power amp, so I dont mind spending a few bucks on it (within reason).
I can post photos somewhere online. I guess there are some websites for photo posting. (I dont go on the web much, I prefer usenet rather than all the ads and junk on the web).
Thanks
Mister Friendly
Yorx was a Dutch company that went out of business years ago. I used to work at a warranty station for them in the early 80s but I don't remember this particular component. Please post anything written on the outside of the relay and one of us may know of a suitable replacement. If the replacement won't fit into the circuit board, it can be mounted close by and wires run to the appropriate pads. Chuck
It might not be the relay itself. Stick a voltmeter across the relay's coil. If it's not getting voltage, then it probably isn't bad.
Likewise, yolu might also want to check the coil with an ohmeter.
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