N/A where can I get this relay?

Discussion in 'Hangar Talk' started by FORANE, Nov 18, 2017.

  1. FORANE

    FORANE Pattern Altitude

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    I have a built in microwave that has failed. to replace it would mean either an unsightly opening in the one of a kind cabinetry or trying to find a cabinet maker to recreate the cabinetry. Our house has been featured in log home's illustrated magazine.
    The microwave repair guy said he thinks a relay on the board is the bad. The board is not available. The repair guy said he checked with a company that repairs boards but they declined to repair the board.
    The pic is the faulty relay. I searched and came up empty. The repair guy couldn't find it.
    Any ideas where I could get one of these relays? 20171118_100242.jpg 20171118_100256.jpg
     
  2. Sac Arrow

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    Sigh. I'm afraid you have to go to Japan.
     
  3. Sac Arrow

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  4. Matthew

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    We get all sorts if odds and ends where i work. Can it wait until Monday? It's possible there may be an equivalent available locally at an electronics distributor.
     
  5. Matthew

    Matthew Touchdown! Greaser!

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    I sent your pictures to my electrical guy. He has a lot of experience looking for obsolete parts and "knows people". I'll see what ideas he might have.
     
  6. denverpilot

    denverpilot Taxi to Parking

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    Have you tested the relay? The guy said “he thinks”. I would have asked him if he “thinks” or if he “knows”.
     
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  7. Clark1961

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    Not to mention substituting a relay should be no big deal in that type of setting. It might not look pretty but it is out of sight.
     
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  8. FORANE

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    Appreciate the replies.
    Sac Arrow, Thanks for the link.
    Matthew, yes it can certainly wait although the wife has already grumbled about no microwave with family coming for thanksgiving... Let me know what your guy says.
    Denverpilot, he said he tested it and has no power coming out of it. I haven't tested it. They say you don't know what you don't know, but in this case, I know I don't know how to test it.
    Clark, he said he needed one with pins in the same locations, but I suppose one could solder up 4 wires and leave the relay close to the board as opposed to on the board.
     
  9. Matthew

    Matthew Touchdown! Greaser!

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    A little counter top backup isn't very expensive.
     
  10. FastEddieB

    FastEddieB Final Approach

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    Put “type DH1PU” in Google’s search window and see lots of hits.
     
  11. asicer

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  12. Clark1961

    Clark1961 Touchdown! Greaser!

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    I have done just exactly that. A dab of silicone glue holds the component in place.

    I have an old war story about replacing a $400 mercury relay with a $20 optically buffered solid state relay. We were burning the mercury relays at a rate of one a week during certain operations.
     
  13. Matthew

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    What's the brand of microwave? I found a service manual for an LG that uses a similar looking relay but it's a 12v, not 28v.
     
  14. FORANE

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    It is a GE JEB100B model microwave.
    The board is pictured here with the faulty relay just above where it fits in the board. 20171113_104419.jpg
     
  15. John221us

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  16. Clark1961

    Clark1961 Touchdown! Greaser!

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    Looks like the board is about $180. Much cheaper to replace the relay.
     
  17. overdrive148

    overdrive148 En-Route

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    Going to have to pass the baton on this relay, I don't know anything about it
     
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  18. FORANE

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    Where?
    Neither my searching or the repair guy could find it.
     
  19. Clark1961

    Clark1961 Touchdown! Greaser!

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    https://ns.appliancefactoryparts.com/search/part/420224/163747/

    I went through this a few months ago resurrecting a 15 year old panasonic inverter microwave. There's an ebay guy out in southern california who may have the part much cheaper. I'll see if I can dig up an email or something. I got a magnetron for $25 from him.
     
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  20. GlennAB1

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    Are you sure that's just a relay?
     
  21. Clark1961

    Clark1961 Touchdown! Greaser!

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    Looking at the board I’d agree it’s just a relay.
     
  22. Matthew

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    Last edited: Nov 18, 2017
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  23. GlennAB1

    GlennAB1 Ejection Handle Pulled

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    When my microwave failed, (six months old), it was just loose (not lose) terminals leading to the magnetron. The service guy knew what the problem was before opening up the microwave. He pulled the terminals off, pinched them tighter with pliers, and stuck them back on... still works three years later.
     
  24. denverpilot

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    Dead bug board layout works!

    As for this relay, “there’s no power coming out of it” is step one. Also just looking at that board there’s a discolored circle around the bottom right pin. Is that from poor desoldering technique or is that a sign that relay was cooked by over-current?

    Step two is removing it and seeing if it closes when appropriate voltage is applied to the coil terminals and there’s continuity between the main terminals. If not, it’s probably bad.

    So you’re at step two.

    If it closes properly with voltage applied to the coil, Step three is seeing if the control circuit is even attempting to close the relay. If it’s not, the original relay was fine. And something else is wrong.

    Your tech only did step one from the description here.

    Someone asked what kind of relay it is, it only has four contacts unless there’s contacts on top of it like the one still on the board. I’m in the compose window so I can’t go back and look at the photo now.

    The label on the board gives me pause when someone said it was 12 or 24VDC. It’s labeled “Main”. I never like when someone labels a low voltage DC component on a board “Main”. That can mean “mains” as in the main wall plug.

    But I don’t see any connectors worthy of AC inputs or any board cuts or large gaps anywhere that an AC/DC isolation board would have on it. So I think probably not. Just crappy silkscreening.

    I’m going to rewind here. How did he test it in-circuit? Microwave ovens usually have some safety switches that can cut power to at least the magnetron when the door is open, or sometimes when the case is off, and often cut power to more than that.

    Getting too far in here for an Internet thread without more info. Could test the relay in about two minutes here and look around that whole oven and figure out what board does what, etc. But it’s a pain in the arse from afar.

    That little ring around the terminal is interesting though...
     
  25. John221us

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    Honestly, do like 98% of us do and just buy a new microwave. In the last year, i have helped my GF’s dad and my best friend. With the former, we found a microwave with an identical fit. In the latter, we used that link above to get fitting plates made. If you spend $200 to repair the microwave, you still have an old microwave.
     
  26. denverpilot

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    You won’t spend anywhere near $200 for a relay.

    If you’re paying the tech for their time and expertise, you might hit $200 though.

    I saw an identical microwave to ours at Home Depot the other day for $80.

    Ours is 22 years old. LOL. Same user interface and size and everything.
     
  27. FORANE

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    I sent them an email inquiry. Thanks for the research.
     
  28. FORANE

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    You guys are right about just buying a new one. Wife wants to upgrade to a convection anyway. We have been considering that as an option. I have looked at the possibility of removing the built in oven below the microwave and modifying the cabinet myself to try and get a double unit to fit. Alternately, we have considered trying to locate the guy back in the mountains who originally built the cabinets and asking him to modify them.
     
  29. Clark1961

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  30. denverpilot

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    There are probably non-hermits who know how wood cabinets work. Just sayin’. ;)
     
  31. Matthew

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    My electronics guy emailed me a few minutes ago:

    How about this as an equivalent?

    https://leeselectronic.com/en/product/3411.html
     
    Last edited: Nov 19, 2017
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  32. FORANE

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    Pins mot the same as repair guy wanted but I will possibly try it if I don't hear back from the feelers I sent out this weekend. Thanks for the help.
     
  33. FORANE

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    I just heard back from this company. They said no board available for my microwave. not sure the difference between my JEB100B and this JEB100BN01.
     
  34. Matthew

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    https://www.a-1appliance.com/lookup

    I put in both model numbers and got a parts diagram, I didn't look closely enough to find any differences. They both use the same control board.
     
  35. FORANE

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