Rank: Member
Groups: Registered
Joined: 10/15/2012(UTC)
Posts: 10
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Simon,
Wow, thermostats are good. Well, back to the drawing board! :eek:
Ok, when I program the control and start the m/w: light comes on, fan starts blowing, turntable spins and clock counts down.
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Rank: Advanced Member
Groups: APP Team
Joined: 2/12/2012(UTC)
Posts: 5,556
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Hi.
Take off the two leads from the transformer's PRIMARY winding and check if there is 120VAC between them.
If the correct voltage present and you already checked transformer, diod and capacitor - replace the magnetron.
Simon.
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Rank: Member
Groups: Registered
Joined: 10/15/2012(UTC)
Posts: 10
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Hi Simon,
Taking measurements at the primary leads to transformer, I do not have 110v. When I hardwire 110v straight to the primary, microwave works.
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Rank: Advanced Member
Groups: APP Team
Joined: 2/12/2012(UTC)
Posts: 5,556
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Hi.
It's got to be the control board.
Jump the Power relay RY2 (Y/W to Y/R). Make sure the door is closed. Kicks on - replace the board.
Please be very careful. If you don't fill comfy - remove the wires from the relay, start the m/w and check if there is continuity between the relay contacts.
Good luck.
Simon.
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Rank: Member
Groups: Registered
Joined: 10/15/2012(UTC)
Posts: 10
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Hello Simon.
So I jumpered RY2 and the m/w came on. Didn't get to leave it on to check for heat because the connection w/ the jumpers attached was kind of tricky. But it DID come on. Now I get to order a board!
Question: the two thermostats, is one "normally open" and the other "normally closed?" In the schematic that came with the microwave, they are both 150/0 yet one reads short and one reads open.
Thanks for you help btw! I appreciate it!
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Rank: Advanced Member
Groups: APP Team
Joined: 2/12/2012(UTC)
Posts: 5,556
|
Hi.
The #110 should be 150/0 - normally closed, the #115 - 40/56 and normally open, but who knows how this thing was assembled. There is another 150/0 attached to the magnetron.
Simon.
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