Question about Kitchen Ranges
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Posted on Jan 02, 2017
SOURCE: panasonic 1100W high power
It may have a blown fuse or - assuming yours is a model NN-H965 - a defective inverter. The fuse is generally located on the bottom of the chassis of the microwave. You have to remove the outer cover on a counter top model - or the front panel assembly on an over-the-range model. There are several reasons why it may blow. If the fuse is loose in the holder, the fuse and the holder should both be replaced. If - with the microwave disconnected from the wall - you can easily turn the fuse with your fingers while it's in the holder, then it's too loose. What happens is the loose connection generates too much heat, causing it to melt internally. If so, you'll usually see a ball of solder at a point where the cap meets the body of the fuse. If the fuse blows as soon as you plug the oven in the wall, or when you open the door, the problem is likely with the door switches. You can find my files "doorsw.txt" and "safety'txt" via Google. They give you the safety warnings and cover the diagnosis and replacement of the door switches. If the fuse blows as soon as you hit START, then it's likely that you have a shorted high-voltage capacitor. If the fuse blows a few seconds after you hit START, then it's likely that you have an overheating / shorting high-voltage transformer. While an inverter (switched-mode power supply) is more efficient from a power consumption standpoint, it is more complex, thus more statistically prone to fail. These should only be examined and worked on by someone who has the necessary technical qualifications. Seriously. Often the machine-soldered connections in a microwave inverter are too weak, so they eventually fail, especially if heat is high in the area. They sometimes fail catastrophically. When not catastrophically damaged, you may hear clicking and may smell an electrical odor, which is sometimes obscured by the cooling fan. Some manufacturers do not encourage or assist technicians to repair microwave inverters. They offer the inverter as a whole assembly. But sometimes that is actually cheaper than the time and labor required to fix the old one. If a technician is willing and able to troubleshoot and repair the inverter to component level, it will may be expensive, but may be worth it, especially if he or she will resolder and reinforce connections as needed as part of a thorough repair. That could easily make your inverter beter than a new one! You might be able to get some verbal estimates if you call Panasonic-authorized repair shops and ask then specifically about inverter repair and inverter replacement costs for your model number. Be safe!
Posted on Oct 14, 2006
Do you put it down before you turn it on? some vacs wont turn on in the upright position. Happened to me once til I stepped on the button to bed it back then powered right up.
Posted on Jan 15, 2010
Sounds like your power jack may be faulty or bad connection to motherboard unfortunately. The only way to truly find out is by disassembling the laptop. You'll have to do this at your own risk of course, and test the terminals at the power jack to see if you are getting power through them, if you are, then the trouble is deeper in the motherboard. If you are not, then here is a good article on how to fix the power jack:
Posted on Jul 22, 2010
SOURCE: I have a 2 1/2
First thing to check is the main power supply and circuit breaker and make sure there is power there.
then check the wiring to make sure there is no problems with that.
last thing is to replace the main control board
Posted on Sep 10, 2010
Hi there!Had the same thing and after replacing the main board it sorted the problem out!Could have been a spike in power and also a dry joint on the board,It will be cheaper replacing the printer than replacing the main board!Sorry!!
Posted on Oct 20, 2010
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