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Samurai Appliance Repair Man's Blog



How to test and replace the ADC "Jazz" circuit board in Maytag and Amana refrigerators

Posted by Samurai Appliance Repair Man, in Repair Videos, Refrigerator Repair 24 May 2013 · 9,618 views
maytag, amana, jazz, adc and 1 more...
The "Jazz" control board is what Whirlpool (makers of Amana and Maytag appliances) calls the Adaptive Defrost Control (ADC) board used in some models of french door and bottom-mount Maytag and Amana refrigerators. You can identify the Jazz control board by the two, single-digit digital displays for the freezer and fresh food temperature adjustment that are located at the top of the fresh food compartment.

These Jazz boards fail pretty frequently. The two most common failure modes on these boards are

1) Failure to initiate defrost and

2) Failure to stop the compressor during defrost.

In both cases, the evaporator frosts up so much that air can't flow through it anymore. When I get the call, the typical complaint is that the freezer temperatures are fine but the fresh food compartment (the beer compartment) is not cold enough.

Troubleshooting these Jazz boards is pretty straightforward. Put the unit into forced defrost mode and see if the defrost heating element in the freezer heats up. You can tell this in a number of ways:

- feel the heating element (carefully!) if you can reach it
- listen for sizzling as the frost melts off the evaporator and hits the hot element
- measure current or wattage change (should increase)-- a Kill-A-Watt meter makes this quick and easy to do.

The compressor should shut off during defrost. If you still hear it running, then you don't need to do any further troubleshooting because you know the Jazz board is bad and you can go ahead and replace it.

If the defrost heater does not get hot in forced defrost mode, then you need to disassemble the freezer and check continuity of the defrost limiter and defrost heater. But, I gotta tell ya, in these units I replace far more Jazz boards than I do defrost limiters. And I don't think I've ever had to replace a defrost heater in one of these models.

So, how do you put the Jazz control board into forced defrost mode? I thought you'd never ask! The tech sheet behind the toe grill has instructions like this:

Posted Image



You can watch me in action as I show you how to run diagnostics on these boards, including putting it into forced defrost mode.



As far as replacing the Jazz board, there are a couple techniques out there. First thing is to remove the light cover (the clear plastic part over the lights behind the control panel). It just slides back and off. That's the easy part.

One way to get at the Jazz board is to remove the entire control housing, like ahso:

Posted Image

The other method, and my preferred method, is to just unclip the Jazz board housing, letting it swing down, but leaving the rest of the control housing intact, like ahso:

Posted Image




You can also watch me in action as I replace the Jazz Board in one of these refrigerators:



The replacement Jazz board comes with an instruction sheet. Read this carefully because you have to program the Jazz board according to the program code on the model number sticker inside the beer compartment.

You can buy the replacement Jazz board here with a one-year, no-hassle return policy: http://www.repaircli...2784415/1541423



Acknowledgments:

Special thanks to Brother Strathy for the beautious and informative diagram markups.


Wire harness madness to watch out for when replacing the evaporator fan in Kitchenaid built-in refrigerators

Posted by Samurai Appliance Repair Man, in Refrigerator Repair 22 May 2013 · 952 views
kitchenaid, refrigerator and 3 more...
This Public Service Announcement is brought to you today by Brother fixyourboard of Fixyourboard.com fame, providing fast, expert rebuild and repair of NLA circuit boards:

After replacing evaporator fan and having the main board rebuilt ... the new fan wouldn't run. Well it turns out that the new fan comes with a new wire harness BUT it only applies to certain models. It swaps some wires around and if you install it on the wrong model the evaporator fan doesn't get power!!! It looks just like the orignal (unless you look closely at the pinout). It seems the fan doesn't ship with the WP instruction sheet. Fan p/n 8201589, board p/n 2252159 and brothers, jumper harness p/n 2221077.

This has got to have caused a lot of head bangin' ! ??

Here's the instruction sheet. Sorry it's a png. Site didn't let me attach the pdf.

[attachment=7201:8201590.png]

Here's the link to the PDF of the evaporator fan motor installation instructions: http://appliantology...n-instructions/



Source: KSSS42FK KA Built In Evap Fan not running after board/fan replacement


Kenmore-Amana bottom-mount refrigerator: warm beer compartment but freezer seems okay

Posted by Samurai Appliance Repair Man, in Refrigerator Repair, Repair Videos 05 May 2013 · 1,012 views
kenmore, amana, refrigerator and 2 more...

You're probably going to find the evaporator coil in the freezer choked in with frost, in which case, the problem is almost always the infamous Jazz Control Board.

There's a tech sheet in the toe grill that tells how to put the board in diagnostic mode for various tests. But the most common failures with this board are 1) failing to initiate defrost and 2) keeping compressor running during defrost. Both result in a frosted up evaporator coil.

Put the unit into forced defrost. If the defrost heater fires up, that means the defrost heater and limiter are good. Then go ahead and replace the Jazz Board.

Here's my video showing how to do the diagnostic dance:

http://youtu.be/2enSBwQXnhw



Source: Kenmore/Amana Bottom Mount 596.65939401


Double-extra Special Secret Tip for Troubleshooting a GE Refrigerator that's DOA

Posted by Samurai Appliance Repair Man, in Refrigerator Repair 27 April 2013 · 1,515 views
GE, refrigerator, diagnostic
If you're working on a GE refrigerator that's dead in the water and you've checked for a good 120vac power supply right up to the J11 connector on the muthaboard, then try this troubleshooting tip from Brother BryanS:

Sometimes a shorted fan motor can give you that same scenario. You can try unplugging j2 fan connector and see if the compressor comes on. If it does then you need to just determine which motor is shorted. I've only this happen to me once and it was the evap motor.

The muthaboard diagram below shows the location of the J2 connector of which Brother BryanS speaks:

Posted Image

You can see a bigger version of the muthaboard diagram here.


If it the refrigerator starts running with the J2 connector unplugged, you should replace BOTH the affected fan motor (usually the evaporator fan) AND the muthaboard. See this topic for a heads-up about getting the correct evaporator fan motor for your model.


To learn more about your refrigerator or to order parts, click here.


Source: GE Ref PDS22SCRBRSS No control board operation


Diagnostic Test Kit for GE Refrigerators

Posted by Samurai Appliance Repair Man, in Refrigerator Repair 26 April 2013 · 1,444 views
GE, refrigerator, diagnostic and 1 more...
Brother Durham explains the diagnostic test kit available for GE refrigerators:

If you do a lot of GE fridge repairs, you may benefit by getting a diagnostic aid shown in the following video. It is, in essence, nothing but a control panel that you can use and will bypass the one in your fridge, whether it is a similar panel, knobs or lcd screen control found at the dispenser. With such a panel, if you connect it and everything works, then you will be certain you have a bad control panel.

btw, the part numbers needed for the aid have been changed. Instead of the three parts mentioned in the video, you need two WR55X10390 (interface and touch panel kit) and WX05X14999 ( wire harness). I got one a few weeks ago and it paid for itself in a few days.

ps you can make one of these by removing a 5 key control interface from an otherwise dead GE and then purchase the harness.

http://www.youtube.com/watch?v=9h7YzcLpOx8&feature=youtu.be



To learn more about your refrigerator or to buy parts, click here.


Source: GE Ref PDS22SCRBRSS No control board operation






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