I Have a 6646T that the on board beeper stays on with a real raspy sound. The lights and fan work fine, but the sound continues. Any ideas?

It sounds like the battery has gotten wet .To the best of my Knowledge there are no replacement parts (circuit board) for the batteries.

I suspect that the Logic Control Board is shot. If the unit is 1 year old or less try:

In the U.S.A., warranty is offered by Sunbeam Products, Inc., located in Boca Raton,Florida 33431. 1.800.334.0759
In Canada, this warranty is offered by Sunbeam Corporation (Canada) Limited,located at 5975 Falbourne Street, Mississauga, Ontario L5R 3V8

To refresh, the beeper should sound once. The definition of the Beeper from the manual follows:
BEEPERFUNCTION
(1) When you plug the unit in, the beeper sounds once and " - - - "appears in the LCD.
(2) When you press one of the four menu buttons the beeper will sound one time.
(3) When you press the adjustable button, every time you press the button, the beeper
will sound once. If you press the button continually, the beeper only sounds one time.
(4) When you press the start button the beeper will sound once, and ":" will flash, that means
the unit is in operation. Once the unit has begun the cooking cycle, the menu selection,
time or temperature cannot be changed. The unit must be stopped and reset.
(5) When the unit is in operation, press the stop button, the beeper will sound once and the unit
will stop operation.
(6) At the end of pre-set time, the unit will sound a long beep to remind you the work is done.

see this steps and fix it. God bless you
Switch If the range vent hood fan and light are not working the switch might be defective. Watch our video on switch testing and test this switch for continuity.

Selector Switch If the range vent hood fan and light are not working the selector switch might be defective. Watch our video on switch testing and test this switch for continuity.

Rotary Switch If the range vent hood fan and light are not working the rotary switch might be defective. Watch our video on switch testing and test this switch for continuity.

Rocker Switch If the range vent hood fan and light are not working the rocker switch might be defective. Watch our video on switch testing and test this switch for continuity.

Switch Kit If the range vent hood fan and light are not working the switch kit might be defective. Watch our video on switch testing and test this switch for continuity.

Micro Switch If the range vent hood fan and light are not working the micro switch might not have continuity. The best way to test the switch is with an Ohm meter. See our switch testing videos for help testing this micro switch.

Thermal Fuse If the range vent hood fan and light are not working the thermal fuse may have blown. It can be tested for continuity. Watch our fuse testing video for more information.

Main Control Board If the range vent hood fan and light are not working the main control board may be defective.

User Control and Display Board If the range vent hood fan and light are not working the user control and display board may be defective. Check other causes before ordering this board.

replace the beeper that makes the sound when you are in reverse.the light will also go out after you replace thet beeper.

It can be issue with faulty sensor or a wiring issue.Troubleshooting is required.
Click the help link shown below:---
Door Ajar Light and Dome Light Remains ON? http://whoisbyme.blogspot.in/2012/06/2003-mercury-sable-door-ajar-light-and.html
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Door ajar light stays on? http://technoanswers.blogspot.com/2012/01/door-ajar-light-stays-on.html

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Thanks.

Remove the power plug and Allow the voltage present on the board to drain OFF. After an hour please recheck and if the beep still stays there is fault in the motherboard. Possible that the beeper driver is short and is continuous. If all the other functions are working without any issues, all you can do is to cut off the beeper connection if you are able to remove the board and snip off . Attempt with power plug removed .

You need to replace both the Y and X-sustain boards to light the tv. If the voltage is fine from the power supply then those are the only other boards related to lighting the plasma gas.


Thank you!

This is usually a bad bottom door switch.

See these helpful text files:

http://031d26d.namesecurehost.com/mwd/safety.txt
http://031d26d.namesecurehost.com/mwd/disassembly.txt
http://031d26d.namesecurehost.com/mwd/doorsw.txt

More than likely it needs a new beeper. When the beeper fails the light on the sonar button will stay illuminated and the system obviously won't make any sound.

Unplug all cards and in case uninstalled the grafik card.
Then check your memory modules.
If one module is defective or it has contact problems you will get no display and a beep.
I think it's a good idea to uninstall and reinstall the RAMs.
If the beeper sounds further, change the RAMs.