Question about Hotpoint RVM1325WW Microwave Oven

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My microwave doesn't heat things up. It also makes a noise about 2 seconds after you start it up. Is it worth fixing? Or is it time to replace it?

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Depending on the age of the unit i would replace it
the most common issue for this call is the hv transformer and magnetron or diode, any one of these could be bad and making the other ones go bad
mic's are tough to call which is bad in person, i would be even harder pressed to nail it down other than one of those three or all of them
for the cost id just replace it

Posted on Oct 22, 2009

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1 Answer

Sanyo EM-SL40S microwave everything seems to be working fine but food doesn't get hot?


see this causes and fix it. GOD BLESS YOU
Power Diode

A diode is an electronic component that readily passes current in one direction only and blocks the flow of current in the opposing direction. If your microwave's diode has become defective, your microwave will not heat and you will hear a buzzing noise. Test the diode to determine if this is the cause of your problem. Replace it if it is defective.


High Voltage Capacitor

A capacitor is an electrical device which stores electricity. A defective capacitor may be why your microwave is not heating but you are hearing a buzzing or humming noise. The capacitor will have to be tested to determine if this is the cause of your problem. A defective capacitor will have to be replaced before your microwave will work again. Make sure you discharge the capacitor before you test it, though.


Magnetron

A defective magnetron is the third possible cause of why your microwave is not heating, but you can hear a buzzing noise. Test your microwave's magnetron. Replace it if it is defective.


Thermoprotector If the microwave doesn't heat the thermoprotector may have tripped. This is a safety device to prevent the microwave from overheating. It can be tested for continuity to see if it's blown.

Main Control Board If the microwave doesn't heat the main control board may be defective. This is not common. When a microwave doesn't heat the problem is usually within the high voltage circuit; either the high voltage capacitor, diode, transformer or magnetron.
High Voltage Transformer If the microwave does not heat, the high voltage transformer might be burned out. Microwave ovens produce a very high voltage in order to power the magnetron antenna, which emits the energy that cooks the food.
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Oct 01, 2012 | Microwave Ovens

1 Answer

Makes loud hum noise but does heat


That is a symptom that the magnetron circuit has failed. It the part that generates the microwaves that heat the food. Not worth fixing since the replacement part can cost as much as as a new oven. Sorry.

May 24, 2011 | Whirlpool GH8155XJ Microwave Oven

1 Answer

My microwave is making a humming noise but not heating. replaced, capacitor, diode, checked all switches including thermal switches and the wires look good going to the transformer and magnitron. Please...


The part that you did not replace is the problem with the oven, the magnetron. It typically fails and shorts out, causing the oven to make a loud humming noise. Not worth fixing since the cost of the magnetron is typically as much as a new oven. Sorry that you spent your time an money replacing the wrong parts.

Jul 14, 2010 | GE JVM1440 Microwave Oven

1 Answer

Button panel does not work or it starts making 'pick-pick' noise


The touch pad seems faulty, there may be moisture behing the first touch pad film, suggest replacing touch pad as it cannot be fixed, Phil

May 18, 2009 | Sanyo EM-S9515W Microwave Oven

1 Answer

Makes a loud buzzing noise and does not get hot


Have seen this many times.

Sounds like a bad CAP since a bad diode would blow the fuse and a bad mag would likely do the same thing.

Since yours is making the loud 60hz buzz you need to replace the capacator that will likely fix the problem. A $10 fix

Jan 06, 2009 | Kenmore 62622 Microwave Oven

1 Answer

Kenmore 721.63662300, 1200W


The magnatron is shorting and overloading the high voltage transformer which is complaining with a load noise. Worth fixing if you do it your self. Magnatrons cast about $40 wholesale. There are just a few varieties of them that fit almos all brands. Try www.partstap.com

Dec 07, 2007 | Kenmore 62622 Microwave Oven

3 Answers

NN-T990SA Panasonic Microwave Stopped Heating


This model uses an inverter to produce high voltage instead of a convential transformer system. While an inverter (switched-mode power supply) is more efficient from a power consumption standpoint, it is more complex, thus more statistically prone to fail. These should only be examined and worked on by someone who has the necessary technical qualifications. Seriously. Often the machine-soldered connections in a microwave inverter are too weak, so they eventually fail, especially if heat is high in the area. They sometimes fail catastrophically. When not catastrophically damaged, you may hear clicking or squealing and may smell an electrical odor, which is sometimes obscured by the cooling fan. Some manufacturers do not encourage or assist technicians to repair microwave inverters. Most offer the inverter as a whole assembly. But sometimes that is actually cheaper than the time and labor required to fix the old one. If a technician is willing and able to troubleshoot and repair the inverter to component level, it will may be expensive, but may be worth it, especially if he or she will resolder and reinforce connections as needed as part of a thorough repair. That could easily make your inverter beter than a new one! You might be able to get some verbal estimates if you call Panasonic-authorized repair shops and ask then specifically about inverter repair and inverter replacement costs for your model number.

Dec 21, 2006 | Panasonic NN-T990SA Microwave Oven

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