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Microwave oven

Microwave LG MS-2323L does not heat

jgdiablo2
hace 5 años
hace 5 años
Hello, I have an LG MS-2323L microwave that starts and turns on the lower light but does not heat, the thermal fuse I have checked and it continues, I have observed that it has no high fuse, what can be the fault? Thank you. regards
ratonelect63
ratonelect63
5.308
hace 5 años

try first before renegade with switch bypass relay contacts on board or directly put line v in input of transformer or inverter

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tecnico54
tecnico54
22.006
hace 5 años
hace 5 años
several things can be that the plate does not feed the transformer that the diode is damaged the damaged capacitor or the damaged magnetron itself or some door swichs it is necessary to review all that first check if voltage reaches the primary of the transformer measures if voltage reaches the primary transformer
jgdiablo2
hace 5 años

OK, will the swichs that are the switches that act when closing and opening the door co-approve? How did they get upset? Thank you.

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tecnico54
tecnico54
22.006
hace 5 años

first measure if voltage reaches the transformer primary

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jgdiablo2
hace 5 años

The primary check that I do with the microwave in operation or only connected to the Network?

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jgdiablo2
hace 5 años

I have checked the primary of the transformer and there is no voltage.

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tecnico54
tecnico54
22.006
hace 5 años

Is the microwave working while you have the voltage measurement? '' If so, then you have to check the largest relay is the one that feeds the transformer

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jgdiablo2
hace 5 años

Hi, is this the relay you mean?
https://ibb.co/giSRnH

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tecnico54
tecnico54
22.006
hace 5 años

exactly that is the relay check it out

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jgdiablo2
hace 5 años

That relay that is normally open and closes when you put the microwave into operation?

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tecnico54
tecnico54
22.006
hace 5 años

no, that relay feeds the transformer, fix how many volts the relay says

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jgdiablo2
hace 5 años

The relay is 250V, the coil reaches 220V and when the microwave is in operation the relay output contact gives 220V alternately.

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tecnico54
tecnico54
22.006
hace 5 años

cam, bia ekl relay

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jgdiablo2
hace 5 años

Hello, I have asked for the relay to the ST it will take me a few days, can I do some test connecting the relay connection with the output contact to check if it heats the microwave?

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tecnico54
tecnico54
22.006
hace 5 años

so the following disconnects the wires from the primary of the transformer then looks for a test cable and directly feeds the transformer so you will know if it heats up

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jgdiablo2
hace 5 años

You mean that 220v power directly to the transformer by removing the wires that it has connected?

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tecnico54
tecnico54
22.006
hace 5 años

Exactly friend with 220 that is the tension that comes to the transformer because 4 I tell you to feed it with 220 direct so you will know if it heats up

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jgdiablo2
hace 5 años

Hi checked by giving direct voltage to the transformer and the microwave heats up correctly, I just need to have the new relay and try again, thanks.

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tecnico54
tecnico54
22.006
hace 5 años

good friend just wait for the relay to come and comment what happened

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jgdiablo2
hace 5 años

Hello partner, first of all thank you for your help and tell you that I have installed the new relay this afternoon and started the microwave being its operation completely correct heating the food perfectly.
a cordial greeting.

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tecnico54
tecnico54
22.006
hace 5 años

you're welcome friend, you can close the question by choosing the best solution

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oswaldo lizarraga
hace 5 años
hace 5 años
Hello, for what you say the fault is in the voltage that arrives from the high transformer primary, you can corroborate by removing the connectors in the primary of the high transformer and you place a voltmeter in the cables and then start, which should mark the voltage delivered by plate order. If there is no voltage you should check the relay, switch and cable of that part.
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