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Thread: Amplifier relay

  1. #1
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    Default Amplifier relay

    Howdy all,
    A friend of mine is trying to repair an old Rotel Rb-1070 amplifier.
    It needs a new speaker relay. The relay has a bit of an odd configuration so I suggested bringing wires out off the board and using another relay but he want to keep it as built.
    So just to see if anyone can help to locate one I'll include photos. The relay coil is 24v.

    PS I have asked for the dimensions of the relay, still waiting to hear.








    Last edited by loopyloo; 03-07-22 at 04:25 PM.



Look Here ->
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    Here you go ->

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    loopyloo (03-07-22)

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    could you use this one just snip off the two rows of pins not needed

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    Quote Originally Posted by carjackma View Post
    could you use this one just snip off the two rows of pins not needed
    That's a 12vdc replay, not 24vdc =)

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    loopyloo (03-07-22)

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    Quote Originally Posted by wotnot View Post
    Here you go ->
    That looks to be the right one.
    I'll let him know.

    Thanks

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    Quote Originally Posted by carjackma View Post
    could you use this one just snip off the two rows of pins not needed
    Yeah pretty close that one. I see Jaycar has a 24v one too.

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    Wotnot, I don't know how you found that one. I did a thorough search on ebay and that didn't turn up.

    Thanks guys, 2 leads might be enough for him to order one.

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    Oops my bad sorry I didnt check the voltage

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    Quote Originally Posted by loopyloo View Post
    Yeah pretty close that one. I see Jaycar has a 24v one too.
    I'm not really sure you can use the jaycar part ; I suspect the relay contact pinouts are different to DEC relay type MSLU

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    Quote Originally Posted by wotnot View Post
    I'm not really sure you can use the jaycar part ; I suspect the relay contact pinouts are different to DEC relay type MSLU
    Yeah I guess without closer inspection there's a risk in buying it, but I think it could be modified :
    Lift the lid, Clip and join 2 wires each side, then remove 8 pins from underneath.

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    Quote Originally Posted by loopyloo View Post
    Yeah I guess without closer inspection there's a risk in buying it, but I think it could be modified :
    Lift the lid, Clip and join 2 wires each side, then remove 8 pins from underneath.
    Maybe ...DEC relays are/were made by daiichi-ele.co.jp and were used by a number of Japanese audio gear OEMs ; each relay type had an alpha-numeric descriptor as they often used custom lead patterns/spacings along with specific contact wiring arrangements. They were also very specific when it came to contact construction/metallurgy....ie; these aren't just power switching relays =)

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    Unless the coil is open circuit, why not just clean and re tension the contacts ?

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    Quote Originally Posted by Reschs View Post
    Unless the coil is open circuit, why not just clean and re tension the contacts ?
    Yes he said the coil is open.

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    Quote Originally Posted by loopyloo View Post
    Yes he said the coil is open.
    Very unusual.
    Carefully check for dry joints to the coil.

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