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Control Panel & Buttons work intermittently
Model Number: MAH5500B Brand: Maytag Age: More than 10 years
The buttons and control panel on my Maytag Neptune MAH5500B intermittently get flaky but resets and works fine after unplugging for about 30min.
After some random amount of time (minutes to many hours), some or all of the above start happening:
- The machine randomly beeps every few minutes (even when off)
- The panel buttons became partially or completely unresponsive and/or beeps when buttons pressed
- The panel lights and numbers start changing
Then it can all be reset and work for a bit after unplugging for a while.
I am able to run service diagnostics (in service mode) after the reset, including:
- Membrane Pad Check Test -- all buttons work
- Quick Service Cycle -- all works, give passing PA code
Googling shows that in general such behavior can be caused by either a faulty Main Control Board or a faulty LED Console Assembly (containing the membrane touchpad). And that it can be hard to determine which one is the cause.
Given that the Membrane pad check test works (at least after reset), it is fair to say that the problem is more likely the Main Control Board? Is there any way to confirm before ordering these $200+ parts?
Is there anything potentially "fixable" that could be causing the problem?
- Bad connections?
- Cold solder joints?
- Single part overheating and causing intermittent failure?
I am experienced with electronics so not afraid to swap out individual components, resolder, etc...
Just need some guidance on where to look...
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