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I am using HD4470 model philips bread toaster. Device is not heating when I switch on supply. I need electrical circuit of this device

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My Frigidaire oven model PLMV169DCD has developed a defect


The only real issue with the control board that could cause that is a failing relay or bad connection, both of which I can repair on a control board for $54.95, which includes insured return shipping.

The first thing I would do is test the outlet. A toaster or hair dryer are good devices to use.

A microwave must be on its own breaker, or at least not on the same breaker as a high-current device (stove) or a device that causes spikes on the line (fridge, freezer).

It's possible you have a failing magnetron or high-voltage transformer, but I would need to discuss it to narrow it down.

For free additional DIY help and details, feel free to e-mail me directly from my site. Remind me of your full model number and detailed symptoms.

William E. ("Ed") Miller
http://www.microwavecontrol.com
Microwave Oven Control Panel Repair Nationwide

"Recycling by repairing since 1982"

Mar 26, 2017 | Frigidaire PLMV169DC Microwave Oven

1 Answer

The microwave will turn on allowing the carousel to turn but will not heat item. Also makes a buzzing sound. Toaster still works.


It sounds like the magnetron may have either failed or is not being supplied with the extremely high voltage required to run it.

YOUR SAFETY IS PARAMOUNT

This is a job for a professional but if you are safety clued up, here's instruction.



If it is the type with an "Invertor", they are not user serviceable and should be directed to an authorised repair agent for continued safety, otherwise if conventional;


Make sure the !!!!any capacitors are discharged!!!!! before attempting any sort of repair.
Check the door interlock switches first then the high voltage diode with either an AVO model 8 or moving coil meter on high resistance range for short circuit, (DVM's won't show the fault!), the capacitor can fail and go short circuit, the feed fuse on the primary of the high voltage transformer and then finally, the magnetron is best checked by substitution.
Hope that helps.

Mar 31, 2011 | Microwave Ovens

1 Answer

WHEN START BUTTON PUSH THE MICROWAVE HAS A DEEP HUMM AND SMELLS LIKE SOMETHING ELECTRICAL BURNING. OTHERWISE SEEMS NORMAL BUT WON'T HEAT WELL. I QUIT USING IT. OPENED CASE AND DO NOT SEE BURNT COMPONETE.


It sounds like the magnetron may have either failed or is not being supplied with the extremely high voltage required to run it.
Make sure the !!!!capacitor is discharged!!!!! before attempting any sort of repair.
Check the door interlock switches first then the high voltage diode with either an AVO model 8 on high resistance range for short circuit, the capacitor can fail and go short circuit, the feed fuse on the primary of the high voltage transformer and then finally, the magnetron is best checked by substitution.
Hope that helps.

Jan 02, 2011 | Amana F1320 Microwave Oven

1 Answer

Mirowave won't stop running; fan runs, light is on only way to shut down is to unplug unit. Model:JVM1650WH05


Sounds like the control circuitry inside is bad,,,or the relay or switching device is stuck on...If the control circuit is bad then you will need someone qualified to repair the circuit...A word of caution...if you decide to try to fix the unit yourself I will tyell you that there are very high voltages inside that can KILL. Please do not service unless you are trained in electrical safety

Dec 19, 2010 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Model JVM1442-001 What is wattage??


Wattage is a term used to express magnitude of power. A common use is to define the electrical power consumption of your home appliances (check the labels). For example, look at the back label of your kitchen toaster. It might read 120 volts, 60 Hz, and 1200 Watts. The 1200 Watts is the power drawn by your toaster when you turn it on. You can get that (Watts) information for any appliance or device that runs on electricity in your house. That's important because that is the unit of measure the electric company uses to charge you in your electricity bill. The electric company bills your electric consumption in kilowatt-hour (KWH). All they are doing is calculating the watts by the thousands (that's the meaning of "kilo") for every hour you have your appliance turned on. The amount 22 cents per kilowatt-hour is close to how much the electricity is costing today. Back to your toaster, 1200 watts is equal to 1.2kilowatts. If you are using your toaster every day for an hour your monthly consumption is 1.2KWH times 30 days equals to 36KWH. That means at 22 cents per kilowatt-hour your toaster is costing you (36KWH times 22cents/KWH) $7.92 on that month. That's the toaster alone, now you can repeat this exercise for every appliance or device using electricity in your home. Start by just doing an inventory of each, do a log with four columns: (1)Name of the appliance, (2)Location, (3)Watts, and (4)Watts/1000 (to get the number in KW). Make a fifth (5) column and call it Hours. Make a sixth (6) column and call it KWH. Then sit down to estimate (think) for how many hours per month each device is turned on. Now multiply each value of column 4 by its corresponding hour number in column 5. Write the results in column 6. Add the results of column 6 and voila! You just have a pretty good estimate of the total KWH consumed in your home in 30 days. Multiply that by $0.22 (or get the actual cost per KWH from your electric service company) and see how close you are to the actual billing. Hope there is no surprises.

There are the science and engineering definitions of the term watt you can research to come to the same conclusion hereto, I just laid a practical perspective.

Dec 18, 2010 | GE Microwave Ovens

1 Answer

Bread will not stay down; element does not get hot (Kenmore toaster- 10 -12 years old). I don't know if there is spring that needs to be replaced or if the element itself is gone. How would I test for this...


Hi and welcome to Fixya. There is a simple test you can do with an ohm meter across the heating element connections.

The unit must be unplugged and your going to have to remove the cover.

Check for any signs of low resistance across the element connections. No resistance or infinity and the element is history.

Any sliced bread toaster with a failed heating element will have the symptoms you described. However, it could also be the mating contact has failed which is closed when the bread holder is in the down postion.


My experience... 10 - 12 year old toasters are not worth repairing unless it is a commercial type unit. By the time you order the needed parts and pay the shipping you far exceed unit replacement costs. Repair costs rise even more if you ship it or hand carry it to a repair service center.

Jan 26, 2010 | Microwave Ovens

2 Answers

My GE Turntable microwave has power, lights come on, and timer works, the heating device doesn't come on


moz-screenshot-2.jpgSounds like the magnetron has failed. This is the component that produces the microwave that heats the food. The cost of the magnetron is about 95% of the cost of a microwave . Most people don't, for this reason, replace the magnetron, they replace the whole oven which is probably what you will end up doing. There is a possibility that the circuit that provides power to the magnetron is faulty and you need to take it apart, find the proper electrical leads and test them with a volt meter. To do this you have to remove it from its mounting and take it apart. It is a fairly lengthy process however.

Benjamin

Jun 21, 2009 | General Electric Microwave Oven

2 Answers

Model "KOT-152UW" The


well inside the unit check for any burn fuses on the power supply area, and into the control board. fuse basically the one will tripped if power surged occurred..

Jun 27, 2008 | Microwave Ovens

1 Answer

Panasonic NN-S953 Microwave Problem


It sounds like a problem with the inverter, control unit (circuit board) or high voltage transformer. I would recommend first that you (or a servicer or electrician) measure the actual line voltage at the outlet. It may be too low, or you may have a tarnished breaker or bad connection between the breaker and the outlet. Then try something like a toaster or toaster oven in that outlet and see if it toasts bread properly. Toasters consume a lot of current, so they are good load testers for outlets. Another good test is a hair dryer. Due to the lethal voltages involved, I do not recommend that a person without training and experience ever work on these models. You should be able to locate a Panasonic-authorized servicer here: http://www.pasc.panasonic.com/WhereTo/FindServicer.asp?Pass=1 I would mention the exact symptom when you call so the technician can bring a new inverter with him when he comes out to repair it. Might save you having it pulled into the shop. Also, you can save about $50 by removing it from the wall and taking it to the shop. It's really a two-person job for safety's sake, and having the original installation info helps a lot. If you still have questions, please feel free to follow up. I appreciate your thoughtful ratings to my reply.

Aug 21, 2007 | Panasonic NN-S953 Microwave Oven

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