Whirlpool Refrigerator WRT5L1SMYB00 not cooling at all

[cwilly8]

Model Number

WRT5L1SMYB00

Brand

Whirlpool

Age

More than 10 years

11 year old top freezer fridge (not our primary). We got home from an extended trip and found that it had completely stopped cooling -- fridge was 58F and freezer was 45F.
Compressor does not run. Fans are not running. Lights in fridge and freezer are working.
So far I have unplugged for 40 minutes and replugged. No change. Tried "3 presses on the door light switch." No change.
There are no lights on the control panel in the fridge compartment. This makes me think it might be the main control board. But I'm reluctant to risk $250 or more without some definite indication.
What else can I try? I have basic mechanical and electrical skills, and a multimeter.
Thanks!

 

[Jake]

Hi, I'm attaching your tech. data sheet below. It shows the schematic of the Hercules Control Board and Opal UI Board, one thing it does not show is how many volts the Hercules Control Board SHOULD be sending to the Opal UI Board for it to power up.

CN1 on the Hercules Control Board is where the main 120 volts comes into that board, CN1 Pin 1(white wire) and Pin 4(black wire).

Here's the Hercules Control Board for your model:

Whirlpool WPW10392194 Electronic Control Board (AP6020802) - AppliancePartsPros.com

Electronic Control Board WPW10392194 / AP6020802 made by Whirlpool

click.linksynergy.com

Here's the Opal UI Board for your model:
Electronic Control Board WPW10336519


Jake

 

[cwilly8]

Thanks, Jake. There is 120v into the Hercules board. The DC voltages on the Opal UI board seemed to be variable -- from pins 1 to 4 was 2.5v and from pins 1 to 6 was 5v, but the voltages seemed to be everywhere from 0 to those values (quite possibly due to my test lead shakiness). None of the LEDs on the Opal board were functional, and pressing SW1 and SW2 for 3 seconds didn't produce anything.

Does any of that point to the problem component?

 

[Jake]

That I don't know, like I said the tech. data sheet does not tell us what the voltage should be to the Opal board.

I had one do this in Quartzsite, Arizona and it was the Hercules Control Board that was the culprit.

Jake

 

[cwilly8]

Thanks again, Jake. The Hercules board runs about $250 or more, so with this being an 11 year old appliance I think I'll wait to find a similar new refrigerator on sale -- this was our "overflow" fridge in the basement, and we can get by without it for a while.

Craig

 

[Jake]

Ok Craig, sounds good.

Jake