Question about Sharp Aquos LC-52SE94U 52 in. LCD HDTV

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Sharp blow fuse

What is wrong when I keep blowing the ceramic fuse

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Posted on May 14, 2014

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Why does my Sharp Carousel convection microwave keep blowing fuses ?


I am wondering which fuse is blowing?
There are at least two fuses fitted internally and in the UK at least another fitted in the plug of the supply lead.

It isn't wise for an unqualified person to replace the internal fuses of a microwave even if it is switched off as there is a capacitor inside that is capable of storing a dangerous amount of energy.

The reasons why a fuse blows is either because there is a poor connection close by that is generating a lot of heat or the the fuse rating is incorrect or of the wrong type (quick-blow instead of slow-blow) or the appliance is consuming more current than it should be.

Microwave ovens have a fairly simple working principle and there aren't many things to go wrong. When things do start to go wrong or components become tired it is usually translated into a loss of efficiency that can be measured by how long it takes to boil a measured quantity of water, for instance.
Periodically timing a measured quantity of water to boiling point is a good way to monitor the performance of a microwave and when efficiency falls significantly take it to the service shop before something destroys itself and causes more damage.

In my limited experience the magnetron could be failing but the internals of a microwave should remain a mystery to the unqualified.
I hope this helps a little.

Jan 15, 2015 | Sharp Microwave Ovens

1 Answer

Why r 872 blowing 8w ceramic fuse repeatedly


Most microwaves usually use 15 amp fuses and not 8's. If it keeps blowing fuses there is a short circuit somewhere and you would need to track that down to stop your problem. A frequent possibility might be one of the micro switches in the door circuit.

Aug 13, 2014 | Sharp Microwave Ovens

1 Answer

What is the reason for the ceramic fuse in the power board blowing?


Something downstream is drawing excessive current, Disconnect boards to isolate.
Look at capacitors to see if any have bulging tops

May 13, 2014 | Sharp Aquos LC-52SE94U 52 in. LCD HDTV

1 Answer

Ceramic fuse blows on power board


the power board is shorted and will need replacement. Yo can get the power supply board from www.tvrepairworld.com

Mar 16, 2013 | Sony BRAVIA KDL-40EX400 40" LCD TV

1 Answer

Fuse size for sharp mircowave r 520ks


The fuse will be a 20amp ceramic. The fuse should be available at hardware stores, Radio Shack.
If the fuse is blown, there is a very good chance you have another problem, possibly a bad or misaligned door switch, shorted capacitor. Replace the fuse, if it blows again you will have to figure out why. Door switches are the most common reason for the fuse to blow.

Feb 02, 2011 | Sharp R-520KS Microwave Oven

2 Answers

The internal 8a ceramic fuse has blown on my Sharp platinum collection 900w microwave oven, model R-957. fuse is marked F8AH 240V and is located on a small circuit board inside the rear of the oven. is...


Don't know if this a regular problem with this unit, but for this fuse to blow, there must be a problem further downstream. Maybe with the power supply or the Magnatron.

Sep 07, 2010 | Sharp R-1874 Convection/Microwave Oven

1 Answer

Break light will not work


It's blowing the fuse because there is a short somewhere in the circuit. Your inspection just hasn't found it yet. Look for bare spots on the wiring; places where the wire might be pressed against metal (especially sharp edges); damaged connectors; etc.

Apr 21, 2009 | 1990 Nissan Sentra

1 Answer

PC power supply fuse - T6.3h 250v engraved on end


T = time delay (slow blow)
6.3A = 6.3 Amperes maximum load
H = HRC - high rupture current (as you specified a ceramic fuse)
250V = 250V AC rated

other letters you may see
FF = ultra fast blow
F = fast blow
M = medium blow
TT = very slow blow
L = low blow current
H = high blow current (glass package)
S = sand filled

Apr 02, 2009 | Dell Computers & Internet

2 Answers

42" LCD HD TV keeps blowing fuses.


A ceramic fuse stands up to heat better than a non-ceramic fuse. I'm no pro, but it sounds like your power inverter board maybe bad. There are replacements out there. Good luck

Jan 18, 2009 | Vizio L32 32 in. LCD HDTV

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