Question about LG RU-42PX10 42 in. HD-Ready Plasma Television

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Taking off the back to check fuses

How do I take off the back of the tv to check the fuses without causing damage to the tv? If this is the problem where can I get more fuses?

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There are tiny screws in the back of the tv if you make sure you locate all of them and remove them carefully the back lifts off without causing damage. Make sure you keep note of which ***** came from which hole as the screws very in length!
We got our fuses from an electrical wholesaler Maplin.
Hope this is of help?

Posted on Mar 12, 2008

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Tv bord fuse damage replace the same type again damage what problem

A fuse does not trip to annoy you. It trips because the circuitry is taking to much current. This can be just a little to much, taking it to trip after a few minutes or hours, or lots to much, tripping as soon as you switch on. Can be caused by a defective semiconductor, or a capacitor with a shortage. If you can't see anything wrong on the board, like a capacitor, wilt a rounded head, or a burned out semiconductor or even a resistor, you have to find out by measuring what could be wrong. Without the skills, don't even go there. It could be dangerous because of the high voltages in the TV.

Nov 09, 2014 | Televison & Video

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When i turn on tv it keeps shutting back off

That is the internal safety switch, that detects a fault and keeps tv off.

Try first unplugging power cord for one hour.

If it does not work it means that there is an internal fault, probably a faulty component or a board in need of replacement.

If you need to call a technician you can ring the phone number listed on the owner manual.

If there is an error code post here

Sep 13, 2008 | Televison & Video

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Lecy blew tv wouldn't come back on change fuse in plug still no light on tv does 42" lg hd tv have a fuse internal.

Yes, TV's have an internal fuse on the power supply. All too often though more damage is caused besides a blown fuse or the fuse doesn't serve the purpose and the power supply is damaged. You can check and replace the fuse as necessary. If you need a replacement power supply, here is a list of vendors below. Have your TV model ready to help you find the part you need.

Nov 04, 2013 | LG 42LC2D 42 in. LCD HDTV

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Cause of blown fuse

Blown fuses are due to sudden power fluctuations and/or short circuits inside the TV. It is not advisable to replace the fuse, without checking for any internal shorts as it might damage more parts inside when making attempts. A qualified service technician will do a bulb check across the fuse to ensure there are no short circuits (The best way to do it).

Aug 26, 2012 | Sylvania LC220SS1 22 in. LCD TV

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Fuse keeps blowing on my Philips 32pw8608/12

Please, never try to replace a fuse, without checking for any short circuit inside. You will only increase the damage inside. It is advisable to call in a qualified service technician as opening back cover by unqualified personnel is hazardous.

Aug 15, 2012 | Philips Televison & Video

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There was a power surge this a.m. where the elect shut down for a second and came back on. the only thing i had on the set was a blinking red light. i conculted the user manual where it said if an improper...

It could be a fuse but most likely the power supply got damaged. You should get the power supply checked for any defective components on it that would cause cause the TV not to turn on. Most likely damage is the capicators on the power supply in the event of a power surge.

Oct 12, 2009 | LG 42PX4DR 42 in. Plasma TV

1 Answer

I was watching TV and it just cut off. There is no power light on and the outlets are working and the cord is firmly in.

good day sir/maam, chances are yout tv just blew a fuse, when a fuse blew up, there are several reasons.
  • It protects your tv from further damage.
  • a part of your tv got bad, causing it to blew.
You have a choice of calling your service center/dealer or do it your own.

If you decide to do it yourself, these are the steps you may need to do.
  1. Open the TV's back cover, to access the circuit. locate the blowned fuse.
  2. you may need to pull out the entire board, to test it.
  3. test the switching regulator IC/transistor for shorts, (you may need a multitester).
  4. check for open low value resistors, less than 100 ohms.
  5. You really need to find the cause of the blew up fuse. part by part checking is necessary,
  6. replace the bad parts and test again.
  7. if everthing else fails, you really need to call your service.
note: if you simply replace the fuse without tracing the blew up shorted bad part, chances are the fuse may blew again.

Oct 02, 2009 | Vizio L32 32 in. LCD HDTV

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Power went out in the home.. when power came back on the tv would not power on.. opened up tv fuse was blown replaced fuse and every fuse put in throws a shock from outlet and tv will still not power on

most likley the SMPS (switch mode power supply) has a short in that circuit.. the more times you replace the fuse the more damage you cause. need to take it to a tv repair shop for this problem.

May 01, 2009 | Sylvania Televison & Video

1 Answer

TV will not power up

Check for a reset button in the back. If a reset button is not present. Unplug the unit and take the back off. Look for a blown fuse on the motherboard. If the fuse is blown, replace it with a fuse with the EXACT same rating. Hopefully, the set will come back to life. If not and it blows again, it will need servicing as there may have been damage done to the power supply. You may be able to make a claim with your insurance company or the power company to get it fixed if the power surge was caused by the power company.

Jan 23, 2008 | Olevia LT37HVS 37 in. LCD HDTV

1 Answer


Hello gladwin6,

You may have at least a blown fuse. However you may also have other damage to your power supply. This often happens due to the voltage spike caused by the power coming back on suddenly. You can check to see if the fuse is blown, however once you change the fuse and if this does not take care of the problem, I would suggest that if you do not have a background in electronics, that you have a qualified technician take a look at your TV set.

I hope this helps,
Thank you,

Oct 24, 2007 | JVC PD-42WX84 42 in. HD-Ready Plasma...

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