Question about Microwave Ovens

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I need a Rhine Electronic Flourescent Ballast model # RB-CHB 40 for a Hampton Bay Ceiling fan. How or where do I go to get one?

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I had the same prob. no one could tell me were to go including the store we bought the fan from.. Well good news go to and order the ballest by phone..(975) major pain to find..

Posted on Dec 16, 2010

  • Joe Botz Sep 19, 2013

    Thanks, Pil. For taking the time to post this. having trouble to. Glad for your help ! joe

  • Rebecca Hagen
    Rebecca Hagen Oct 02, 2014

    Same here, Phil. Thank you! Searched all over locally and then on the internet and was already even sent the wrong part once - this is the right answer! Worked for me.


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Just called. They no longer carry the Rhine rbchd40- they were discontinued. Now what?

Posted on Oct 29, 2016


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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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Samsung microwave ovens model mo1650ca turntable stopped turning

Are the internal cooling fan and stirrer (in the ceiling of the oven) running when you cook?

The turntable gets its 21VAC power from a tap on the cooling fan motor, and it's controlled by a relay on the circuit board.

So it's important to know if those other two motors are running, too.

You will have to temporarily remove the stirrer cover from the ceiling to see if the stirrer is turning when you cook.

For some weird reason, this model's service manual is not in all one piece. So you have to download all the sections separately:

You can find handy exploded views and order parts by model number here.

If you need circuit board repair, we do that for $39.95 in most cases.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Nov 27, 2012 | Samsung Microwave Ovens

1 Answer

I have a qasair rangehood (uv-1200-2) with 2 lights. The lights have not worked for a year or so. I have now replaced them (following )...

First, turn off power to the rangehood. Check the contact resistance of the light switch(es) with an ohmmeter. It should be less than 0.1 Ohms. If you get a substantially higher resistance in the on position, the switch contact is burned out. Also, inspect the wiring harness connector and the connections to the light fixtures. If they show signs of overheating, the connection resistance is too high. You can try polishing the connector contacts to remove oxidation. I use a pencil eraser for mild cases and a non-metallic dry scouring pad (3M Scotch-Brite) for more severely tarnished contacts. In the worst case it will be necessary to replace the terminals or connector.

According to the drawing for this series on the Qasair website, the unit uses fluorescent lamps rather than the halogen lamps referred to in the lamp installation instructions. If this is true, it is likely the ballast has failed (if the lamps have separate switches, they probably have separate ballasts also). If the original ballast model is no longer available, make sure the replacement has at least as high a maximum temperature rating as the original. This is especially critical for electronic ballasts. You can extend the life of the new ballasts by making sure the fans are running before turning on the lights - this should reduce the ambient operating temperature inside the hood.

May 25, 2011 | Microwave Ovens

1 Answer

I have a Hampton Bay ceiling light fixture model FM 5001. The light had burned out. How can I get the glass cover off, so that I can replace the bulb

Hope you figured this one out by now. . .it unscrews. Turn the glass counter-clockwise and it'll come off.

Nov 26, 2010 | Microwave Ovens

1 Answer

My panasonic microwave model NN T99)SAF is now missing a part. The part is on the inside of the microwave. It is a thin flat piece that is a cover over an opening for a fan or something . . .it is about 4"...

That is called the ceiling cover, also known as the waveguide cover, stirrer cover, or spatter shield.

It will definitely need to be replaced. It provides important protection for the magnetron.

You will need the following parts:

B20554U00AP ceiling cover
A90804U00AP canoe clip

The best place to order parts for this brand is Encompass (formerly Tritronics). Or you can call them toll-free at 866-779-5835.

We're happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Jan 30, 2009 | Panasonic NN-T990SA Microwave Oven

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F7 Error

This is schematic:
But your correct model # is: GH5184XPS4

F7 Power to magnetron
1. Check the door, hinge and cavity front alignment. Adjust as needed.
2. Check the operation of all interlock switches.
3. To check the over-temperature protection for the magnetron, unplug
microwave oven or disconnect power.
4. After 40 seconds, check to see whether this solves the problem.
5. If this solves the problem, check the cooling fan for proper operation or
6. Unplug microwave oven or disconnect power.
7. Check resistance of the magnetron thermostat. It should be close to
0 ohms. If necessary, replace magnetron thermostat.
8. Check that the control cable to the 1100 watt inverter is correctly connected
to plug P2 on the display PCB. If necessary, adjust or reconnect.
9. If interlock switches operate correctly, replace 1100W inverter.
10. If problem persists, replace electronic control.
11. Plug in microwave oven or reconnect power.

Dec 06, 2008 | Whirlpool GH5184XPQ Microwave Oven

1 Answer

Microwave oven defective

It's actually a stirrer. Its purpose is to scatter the microwaves to ensure even cooking, similar to the way a turntable does in other models. Having a stirrer instead of a turntable allows for a bigger dish.


The sparking is usually caused by deposits or grease or food debiris which heat, reheat and arc.


If the oven is used very long without the cover, that debris and grease can get onto the magnetron and ruin it.


You can find helpful exploded view diagrams and order parts by entering your model number here:

Aug 30, 2007 | Jenn-Air JMV8208AAS Microwave Oven

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