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"None of the touch pad controls work, the display is blank and the cooking cavity ..."


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Nothing works
Old 07-11-2007, 01:44 PM   #1
crudedude48
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Question Nothing works
Brand: Amana
Model Number: AMV4204AAB
Age: 1 - 4 years

None of the touch pad controls work, the display is blank and the cooking cavity light does not come on when the door is opened. I have verified the ac power is ok. I have measured ac power thorugh the units main fuse. Need a wiring diagram or troubleshooting help. Are there other fuses or interlocks that would disrupt the ac power? I am an electrical design engineer with sufficient skills to fix this turkey with a little help and I have experiance working on high voltage equipment.
 
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Old 07-11-2007, 04:18 PM   #2
PS Staff - Sheila
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The schematic diagram is on the inside of the outer cabinet.

There is a fuse on the inside of the microwave that is likely opened.

Here is a link to your microwave model AMV4204AAB.
 
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Old 07-12-2007, 01:25 PM   #3
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After a thourgh look, there is no schematic on the outer cover or anywhere elese. I could only find 1 fuse and it is ok. ***Do you have access to a schematic?***

The assembly drawings were very useful. Referencing the Blower Motor drawing, I could not find part #7 called 'Assy, FUSE BLOCK/NOISE FILTER'. The only fuse I could find is part #11. The link for 'Help with series numbers' did not work. Part #7 is referenced as 'series 11' - please explain the difference between series 10 and series 11.

I could not find the door interlock switches in any of the assembly drawings. There are 3 interlock switches. The switches check ok. Any additional suggestions will be appreciated.
 
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