Will a bad microwave cause power loss in a bed room

Not sure, but it may be possible that the transmitter and microwave are using similar cycle and or are on the same electrical circuit. Use a gfci plug checker to test ground as well.

if timer and all other controls seem to work correctly id say a loss of high voltage section in microwave power generation part there can be several reasons for this a profesional serviceman can find more about why ?

If the microwave oven is not arcing on the inside, and seems to cook fine then yes it is okay to use.

Power being interuppted could be anything from a bad fuse , bad fuse holder, bad solder connections on the main board. Bad breaker in your panel. Start by plugging it into an outlet you know is on a different breaker than the on it is on now. See if it does the same thing. If it works ok, then problem with power to the other outlet. If it does the same thing problem inside of unit. PF is Power Failure, now we have to figure out why.

When a microwave asks for the clock settings, it has lost power. Check the plug and the outlet for damage or if it is loose. When on, vibrations can cause the plug to reposition if loose enough. Even a very short loss of power will reset the microwave. If the plug/outlet is ok, then check to make sure that the fuse for the outlet is tightened fully (breaker switches do not have this problem). Last, try another outlet as the wiring to the outlet may be loose.

what kind of motorhome is it if it has a inverter it may be kicking in and out due to low voltage or a bad cell in the batteries

Hi.


The following parts may cause this problem and must be tested:

Control Pad: This is most likely the problem , testing the contol pad is quite complicate.

Door lock: A defective door lock can cause the magnetron and turntable motor being turn off erratically. This wont cause the program to reset.

Power cord and power connection solder joints: this can cause a microwave restarting because vibration caused by the oven working cause power interruption.

A bad shielding to controller board can also cause the microwave resetting because of the interference caused by magnetron on control board circuits. This is also quite common.

The control pad or control board are the parts that are most commonly causing this problem.

This can be caused by a number of causes: a bad magnetron tube (which generates the microwaves), failed transformer or other power supply parts, bad control board or relay on it, bad door switch. Microwave servicing exposes hazardous voltages, and could lead to microwave leakage if repairs aren't done properly. Repairs should be handled by a professional.

A microwave can be dead for many reasons.

You can find a wiring diagram for model R1471 at our site:
http://207.234.249.73/mwd/r1470_wiring.jpg

If it goes dead for a while during or after cooking then comes back on, the magnetron is probably overheating and causing the magnetron thermostat to open. Then when it cools, it closes the circuit and allows power through again.

If it's intermittent or random, it may be a bad connection, usually on the control board or a loose fuse holder, or even an intermittent fuse.

You should do a continuity test the fuse while it's in the holder (with the microwave unplugged, of course) then turn the fuse by hand or take it out and put it back in, then test it again. If you remove the fuse, then press the meter leads against the ends, it can allow internal contact to be made and make a bad fuse appear to be good.

If it went dead almost immediately after pressing the Start pad, that's usually a shorted high-voltage capacitor.

If it went dead a few seconds after pressing the Start pad, that's usually a failing high-voltage transformer.

If it goes dead or blows the breaker when you plug it in or open or close the door, then there's a problem with a door switch or door switch mount.

If the fuse is good, it may be an open thermostat or thermal cutout on or near the magnetron or on top of the cavity / body of the oven.

If you or someone you know decide to look into it, we have critical safety information and disassembly information at our site, and our link is at our listing here on FixYa: http://tinyurl.com/yzjozk

We're happy to help and we appreciate your thoughtful rating of our answer.

If you're getting power at the outlet, the most common problems causing a "dead" condition are a bad thermostat (or thermal cutout / thermal fuse) on or near the magnetron, a blown internal fuse, or a problerm on the control circuit board. You can find helpful exploded view diagrams and order parts by entering your model number here: http://tinyurl.com/gv383 If it seems to be a problem on your control board, we repair these for $39.95 nationwide in most cases. If you or a friend decide to work on it, we have *critical* safety, disassembly, and troubleshooting info at our site, which is linked at our listing here on FixYa: http://tinyurl.com/yzjozk