Question about Panasonic CT-36HL43 36" TV

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Fuse keeps blowing out on Panasonic CT36HL44J TV

I have replaced GMA 6.3 A fuse three times in three months. What may be causing the fuse to blow out?

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Thanks for this post. It inspired me to replace my fuse in my TV and it is working great now... I took pics of the process in case anybody wants to see what they are in for. http://joedotcom.com/2009/09/01/panasonic-fuse/ Although I did use a 6.3a fuse (just like I removed). I read on another forum that you can replace it with a 7a fuse and get better results. I have had this TV for years and this is the first blown fuse. If it becomes a reoccuring theme, i may up it to the 7a.


Posted on Sep 02, 2009

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1 Answer

TV won't turn on


take the back off the tv and inspect the glass fuse off the ac power cord, it will probably be black and open, this is a common problem, it blows because the degaussing circuit works too slow, the original fuse is an 6.3 amp fuse, you need to replace it with a 6.3 amp slow blow or a 7 or 8 amp fuse to keep it from blowing, if you put an original 6.3 amp fast blow fuse in it, it will work for a while, but will blow again someday.

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2 Answers

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Once you take the back off there is a glass gma fuse withing a few inches of where the power cord plugs into the board at. This should be a 6.3 or 6.5 gma fuse. Very common to blow in your model because the degausing coil is a little to big for it. There are other reasons for it to blow but 99% of the time you change change it and the set will work again. Let me know if you need more help or info!

Tim Nolan

Sep 11, 2008 | Panasonic CT-32HX41 32" TV

1 Answer

32'' Panasonic TV, 4 yrs old, keeps blowing the fuse


Hi Mendi.
I had a similar problem, in that I could not find the proper fuse for my set. I bought a bit higher amp fuse from Radio Shack and it ended up blowing a couple months later. I've since pulled the TV down and replaced it with an LCD set, so I've solved my problem.

But, to address yours, I don't think the amp difference would not be the problem. Likely, there is a power issue on your set causing it to draw more amps and become out of specification. Using a higher amp fuse would buy you more 'capacity', but if its blowing those too (repeatedly), its likely a real problem in the set. I'm not a TV technician, so I can't tell you why. I'd suggest taking the thing in for service (cheaper than the house call) or if that is too expensive, looking at putting your money into a set that won't give you those problems. Or, just keep replacing the fuse until it doesn't fix the problem.

Sorry I cant help much more.

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1 Answer

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Hi there!
If the fuse rating is correct as indicated on the board, then the PTC is probably busy going faulty. If not sure where it is located, normally on the front where the switch is and where the coil that sits around the tube is connected to the board. Little plastic box with three pins(sometimes two) black or cream in colour. Some circuits use a disc type with 2 legs, however not sure on your set. This is called the degausing circuit and demagnetises the tube every time you switch the TV on. Good luck, JUS004

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1 Answer

Keeps blowing fuse


It has a short circuit somewhere...
Not sure if this is a CRT, LCD or Plasma TV but the two common causes of shorts for CRT's are the Horizontal Output Transistor (HOT) and/or the Flyback Transformer (Could be both). As a general rule if the flyback has visible cracks in the case they should be replaced. It is also a good idea to replace the HOT if you're replacing the flyback as it could be weakened and may not last much longer itself.
Other areas to check for all types would be any Diodes in the Power Supply Circuit. If a diode is open it can cause the fuse to blow. Note that a diode itself will not short, but an open diode can cause a fuse to blow.

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If the main fuse keeps blowing, check the horizontal output transistor for a shorted condition and diodes in that section as well.

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2 Answers

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This set has a common problem with th main fuse opening for no other apparent reason... One of the few exceptions to my corner-stone statement that a fuse is never the cause only a symptom..
Don't replace it though with the same type grade, use a 6.3a slo-blow gma type - available at Radio Shack... Try that and if everything works you're back in business.. If not we nee to find a cause...
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2 Answers

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1 Answer

Tv will not turn on


Yes, it is most likely the fuse. I have seen many of the fuses in those Panasonics "pop" for no apparent reason. If you feel comfortable, you can replace that fuse yourself. Carefully remove the back, follow the AC power cord and where the AC cord attaches to the PC board will be a small glass fuse. It is most likely a GMA 6.3A fuse. Replace that fuse and the set should work. If the original fuse is good or if the new fuse blows out too, have the set serviced by a qualified tech.

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1 Answer

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