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My tv keeps blowing a fuse when I turn on set.

My tv keeps blowing a fuse when turn on power. How can I fix this short?

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DO NOT keep feeding it fuses more damage can accur-check rectifiers in power supply-then check regulator-chech H.O.transistor.if you need more help im gonna need a model number to go furthor

Posted on Sep 04, 2009

  • Helpfix138 Feb 12, 2012

    I have a toshiba 40ft1u and it keeps blowing the fuse when I replace them and then plug it in. I used 6.3amp 250 volt slow-blow fuse glass. I tried 2 and now stopped. It had a ceramic fuse originally. It was a friends that had it plugged straight to wall during thunderstorm. It possible to fix and could do it myself. Or would be cost effective to have a professional repair it?

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LC320EM2


If it blows when turned on a short usually on the secondary side of the power supply---its the part or area where the voltages that are developed are distributed to the rest of the set.

One other odd thing can happen---say a 5 amp fuse is blowing, you go out and buy a generic fuse of same value--at like Radio Shack etc.

Many of the fuses used in modern gear will blow instantly if not the original type and made for that unit.

I had one customer who had a 4 amp blow every time he turned it on--generic fuse-----The correct fuse of same amperage did not do that.

Don't keep feeding it fuses as if a short sooner or later parts that are not now bad will get destroyed and make matters much worse.

Dec 08, 2012 | Televison & Video

1 Answer

Magnavox 37MF437B/37 keeps blowing fuses


Either a short somewhere---which fuse? The one at the power cord or what?

Other possible reason is wrong fuse----many of the fuses in these sets are special-----if you go and buy some Generic ones--hardware store or Radio Shack the fuse even with same amperage/voltage rating may blow at turn on instantly for no reason------

Dec 08, 2012 | Philips Magnavox 50ML8105D 50" HDTV DLP TV

1 Answer

I have a RCA HD50LPW175 TV and it keeps blowing the 6-Amp fuse125v. Why?


Either you have a dead short or you used the wrong fuse--not all 6a fuses are the same---buy a cheap generic one from Radio shack etc and it can blow for no reason.

If not the wrong fuse---the fuse you are talking about should be where power enters the set--means a short on primary side of set's power supply---somewhere between power cord and input side----possible the bridge rectifier is shorted.

l have usually seen this when there was a power outage or a surge on the incoming power line.

May 28, 2012 | RCA Televison & Video

2 Answers

Panasonis 50" plasma, both fuses keep blowing when


This is a dead short, check power supply for diodes bad or zeners

Mar 08, 2011 | Panasonic Viera TH-50PX80U Plasma TV

2 Answers

Samsung LN40A530P1F LCD TV keeps blowing main power fuse when i turn set on it blows right away i have replaced fuse many times. Also when back was off i noticed a arcing as fuse blows at a component just...


http://www.samsung.com/us/support/detail/supportPrdDetail.do?menu=SP01&prd_ia_cd=&prd_mdl_cd=&prd_mdl_name=LN40A530P1F
If a fuse blows like that there is a major problem, inside. I suspect that what your are seeing is the inrush thermistor, and they exhibit this under great load. I would explect that this fault maybe in the actual PSU. Due to the lack of service manual support, i would get a quote for repair from an authorised service center.

Jun 22, 2010 | Samsung LN40A530 40 in. LCD TV

1 Answer

Will not turn on.


If the TV is blowing the fuse in your house, It looks like a component in the power supply is shorted.
To fix the TV, you will need to buy a new power supply module or get the one inside the TV fixed.
Good Luck.

Apr 24, 2008 | Panasonic VIERA TH-65PV500 65 in. Plasma...

2 Answers

Main fuse blown on CT-32G11 32" Panasonic TV, Replacement fuses continue to blow.


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

Jan 12, 2008 | Panasonic CT-32G11 32" TV

3 Answers

JVC AV-36260 TV Problem TV won't turn on


  • blowing fuse is a short circuit problem in your tv.
  • please do not replace fuse unless you know the reason otherwise it may damage tv.
  • fuse blowing is due to
  • main filter capacitor
  • power output transistor sort or regulator short circuit.
  • good luck

Oct 21, 2007 | JVC AV-36260 TV

1 Answer

Fuse blows.


Please check for shorted diode or condenser at power section.

May 29, 2006 | Panasonic CT-27G14 27" TV

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