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The therom fuse looked fine, the fuse behind the control panel was not blown and the low voltage transformer didn't appear burned out.....How do you check the parts other than visually?
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Visual test for electrical and/or electronic parts usually does not work. You have to have a multimeter with ability to measure resistance and voltage. the fuses and the transformer have to be checked for continuity. You can learn how to do it from one of our previous posts: http://forum.appliancepartspros...continuity-ohmmeter.htmlGene.
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Gene,
I found that the Thermal Fuse on the board, it's a inline fuse checks fine with the continuity meter. The Low voltage power supply checks fine as well. I replaced the heating element and the unit still does not power up.
I checked the control power transformer, blue to blue has continuity and red to red does not. Red to blue none. I have the Wireing Harness schematic, BTW it was in the top of the unit.
I inspecting the board there is what appears to be heat discoloring near R188 a big blue resistor. The resistor is loose in the board.
In my opionion the board and possiably the power supply need to be replaced.
Also there the 220 power negative black wire terninates in the unit, it's discolored there as well.
Please advise......
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Originally Posted by: steffco1  ...I checked the control power transformer, blue to blue has continuity and 1. red to red does not. Red to blue none. I have the Wireing Harness schematic, BTW it was in the top of the unit.
I inspecting the board there is what appears to be heat discoloring near R188 a big blue resistor. 2. The resistor is loose in the board.
In my opionion the board and possiably the power supply need to be replaced.
3. Also there the 220 power negative black wire terninates in the unit, it's discolored there as well....... steffco1, 1. The transformer is bad. 2. Most likely the control board is bad as well. 3. Not clear what is it. - The part number for the transformer is AP3968801 - The part number for the control board is AP3767567 Gene.
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Gene,
The Suppressor, Part Number: AP3009547 made by WHIRLPOOL
Appear to have smoked as well, it's discolored where the 210 negative wire is grounded.
I think I need to Order
Control Board
Suppresor Board
Transformer
Do you agree?
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If it looks damaged, yes.
Gene.
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Gene,
I have replaced the control board, surpressor and the low voltage transfomer. I have checked both Thermal Fuses and they check ok with continuity. I have checked the control panel fuse and it checks ok. I have 220 volts into the unit, checked with my multi-meter.
Still not working....What's next......?
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Rank: Advanced Member
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steffco1,
This is the transformer which provides low voltage for the control board. The primary winding of this transformer receives 120VAC from the control board (terminals P16-5 & P16-7, red wires) and low voltage is coming into the control board through the terminals P16-2 & P16-3 (blue wires).
Check if the is 120VAC between the black (P24-3) and white (P24-1) wires. Do not forget to remove them from the control board prior to testing.
If there is 120VAC then check for 120VAC between the terminals P16-5 and P16-7.
Post the results.
Gene.
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Gene,
It's working..I didn't push one connector home on the control board....Thanks for the help........
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