Top 20 Panasonic NN-S541 Microwave Oven Questions & Answers

Yes

Panasonic FAQ:The microwave oven model NNSA651S was manufactured in a way that the oven light turns on only while cooking. - FTStupid design!!

please follow this steps and fix it. God bless youLine FuseEvery microwave oven has a line fuse. This fuse is designed to blow if too much current is drawn through the microwave circuitry. The fuse can be replaced, but the underlying issue should still be investigated and resolved. Otherwise the new fuse will blow also.Main Control BoardIf the microwave is not working the main control board may be defective. This is not common. When a microwave stops working the problem is usually the line fuse or within the high voltage circuit; either the high voltage capacitor, diode, transformer or magnetron.Thermal FuseIf the microwave is not working the thermal fuse may have blown. It can be tested for continuity. Watch our fuse testing video for more information.ThermoprotectorIf the microwave is not working the thermoprotector may have tripped. This is a safety device to prevent the microwave from overheating. It can be tested for continuity to see if it's blown.

clean it and check the wiring in the mains plug

Hi,
Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

Microwave Oven Basic Troubleshooting Tips

heatman101 [
][
'
'

Hi,

Do you mean you want to replace light bulb for your microwave? If yes follow the instructions below;

1. PLEASE UNPLUG YOUR MICROWAVE!
2. Picture of your microwave with a phone or camera so that you don't forget how to assemble it back.
3. Remove the two screws that holds grill. They are located at the edge of the unit. Once the screws are out, rotate the grill forward from the top. It will pop right out.
4. Once the screws are out, rotate the grill forward from the top. The grill should pop right out.
5. Locate a small access cavity on the left.
6. Remove the screw that is located near the front of the microwave door.
7. Lift up the sheet metal floor to access the bulb. The bulb is located under the sheet metal "floor" on the left.
8. Place a flash light on the microwave floor and shine the light in the light area. This will help you see better when you replace your bulb.
9. Look for a small shiny reflector that hides the bulb. Use your two fingers to squeeze it a bit. Making sure not to bend it.
10. The bulb connection should come right out.
11. After you replaced the bulb, re secure the reflector and the sheet metal floor with the single screw. Test the bulb by plugging in your microwave.
12. Once you see that the bulb works. Unplug your microwave again and re attach the front grill. You are now done.

I hope this helps to solve your problem.

Good luck.

It really depends why it is smoking.
I, due to the model number, suspect the invertor board, but it could be all sorts.
Call an aproved engineer and get it checked.

Either te magnetron has failed or the invertor has failed.
How long is a piece of string.
Ask a Panasonic Authorised Repair Centre for an estimate.

H97, H98 and H99 appears in display window a short time alter start key is pressed and no microwave oscillation.

NOTE:

DO NOT try to REPAIR this Inverter Power Supply (U) and also DO NOT RE-ADJUST PRESET VOLUME on the board. It is very dangerous to repair or adjust without sufficient test equipment because this circuit handles very high voltage and very large current. Off alignment or inverter board operation is dangerous. Operating a misaligned inverter circuit is dangerous due to the very high voltage and current that is produced by this board. Defective boards must be replaced with a new one.

Hi,

Here is a tip that will help you to figure out what is wrong with your Microwave Oven....

Basic Microwave Oven Troubleshooting Tips

heatman101

Due to the type and design of your microwave oven, consult an Panasonic authorised service centre.

www.panasonic.com for a list of dealers in your area.

Hi,

Here is a tip that will help you to figure out what is wrong with your Microwave Oven....

Microwave Oven Basic Troubleshooting Tips

heatman101

Hi,

Here is a tip that will help you to figure out what is wrong with your Microwave Oven....

Basic Microwave Oven Troubleshooting Tips

heatman101

1. It is Panasonics way of selling parts and making money off of parts when it is never more than one thing. More than likely it is just one part. Like the control board. But it is hard to say without doing some testing. 2. It would cost way more than a new microwave to replace all of the parts. With parts and labor, it would cost around $1100 for parts and labor to replace all of the parts. But replacing just the part that is bad could be as little as $300. Depending on what failed to blow the fuse.

Hi,

H97 means that there's a problem with your inverter, magnetron, or digital programming circuit. It is suggested to contact a repair person to deal with this kind of problem to your unit as the repair involves high voltage to deal with.

Please accept the solution if it's helpful. Do get back to us for any further query.

Thanks for contacting fixya.com

H95, H97, H98 or H99 mean that there's a problem with your inverter, magnetron, or digital programming circuit.

Due to the lethal voltages used and produced, I do not recommend that an inexperienced person work on these.

You can find an authorized Panasonic servicer here. If you're not in the US, see Panasonic.net.

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

Hi,
Here is a tip that will help you to figure out what is wrong with yourMicrowave Oven....

Microwave Oven Basic Troubleshooting Tips

heatman101

hjkhfk

No that is a very dangerous situation. What is sounds like is you had a short that blew apart but not completely damaging the wires. You should unplug, and open it if its out of warranty and inspect the wires. If the wires are partially burned it can heat up and cause an electrical fire.

An inverter-based unit is more efficient and uses less power than a design based on a high voltage transformer.

But with increased complexity / higher component count comes a statistically higher chance of failure, especially in inverter circuit boards that are machine soldered, where sometimes not enough solder gets on parts that are large, run hot, and/or run with high currents. This can lead ot bad connections and blown components.

As a longtime technician, I have always liked Panasonics very much, but I have never been a huge fan of inverter-based designs due to those factors. But again, as a technician I repair my own stuff, so it's not a big deal. And everything is slowly moving that way anyway.

I would not at all discourage you from buying an inverter-based Panasonic, but this is one of those rare times when I would advise you buy an extended warranty with it.

Once it's out of warranty, if it fails, call around and look for a repair shop that has a technician who does "component-level repairs" on circuit boards, instead of just changing boards. That will save you on repair bills.

It's often best to find a TV shop that also does microwaves, instead of an "appliance service center" which does not work on electronics.

You can find authorized Panasonic servicers here. Bookmark that for later.

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