Two problems. 1. Oven element won't heat up even though it tests ok. 2. Thermal cut out is open circuit which would explain problem 1 apart from, when thermal cut out short circuited (for test purposes) the cooling fan runs permanently and the element still won't heat up. Suspect Control Board? Help please
SOURCE: Whirlpool MH6151XHT-1 - No Power - Stumped
First change all the fuse and check whether it works or not, if it does not work than as per your finding the secondary transformer could be the issue, the secondary transformer tap down the voltage fro 230-240/110 to required control board voltage. the best thing if the unit is opened then the right problem can be found but as per your description either fuses are faulty or the secondary transformer.
SOURCE: GE JVM150001 Microwave
Willaim,
I have gone through the testing on the Mini Manual and still have intermittant operation. When I turn the oven on there is a secondary humming noise that indicates the oven is working. I can tell at once if the seconday hum is not there. When the oven starts that econd hum sort of kicks in a second or two after the oven starts. 6 months ago I seated all 4 of the door switches and the oven worked non stop for like 6 months. All of a sudden it went out again like before. Is there more to testing these switches than just continuity or no continuity? Can they be partially bad?
I was going to retest all switches for resistance and connections, as well as Magnatron and other high voltage connections per your Blog
Thanks,
Rwood
SOURCE: ALL POWER LOST
We have
the full service manual for this model and have uploaded it to our
site here to help you.
You will need the free
Acrobat Reader
to view or print it in case you don't have it.
The parts I would suspect most are the internal fuse, the magnetron TCO (thermal cutout) or the oven cavity TCO.
To check or replace the latter, you'll need to remove the oven from the wall and remove the cover.
If
so, the installation instructions are very handy, and it's best to have
two people since the microwave can be heavy and awkward.
You can download GE
owner's manuals and installation instructions here.
You can usually find
helpful exploded view diagrams and order parts by entering your full
model number here.
We're
happy to help you with free advice and we'd appreciate your
thoughtful rating of our answer.
SOURCE: ge convection micro combination has a problem with
I would say the convection fan blade is loose on the shaft.
If this is the case, it would try to run, but no cooling would take place, so the heat from the heating element would get very high but it would not be distributed through the oven.
The thermistor would then detect the extra high heat and stop it, I assume.
You may be able to use super glue or JB Weld to fix the blade on the shaft, as long as they are clean and dry and it is allowed to set overnight.
You can find
helpful exploded view diagrams and order parts by entering your full
model number here.
There
should be a "mini-manual" (tech sheet) hidden inside the unit
behind the
control panel or hidden on the left side behind the grille, which is
very helpful when troubleshooting, testing, and locating components.
Accessing these components
for testing and possible
replacement will require you to remove the oven from the wall and take off the outer cover.
If
so, the installation instructions are very handy, and it's best to have
two people since the microwave can be heavy and awkward.
You can download GE
owner's manuals and installation instructions here.
We're
happy to help you with free advice and we'd appreciate your
thoughtful rating of our answer.
SOURCE: Hello, I have a Panasonic
Check the door switch and once the door is shut the board must be active. If there is no clock or display then the processor board is faulty. Also if there is no action from the touch pad then it must be checked. Since the turntable works as you start the processor seems to work but the output to the magnetron is not active. So you need to check the relay to the magnetron switching, check the temperature cut off unit and the main capacitor.
All the above seems to be suspected.
Attempt with care/caution as there is high voltage present.
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