Question about Panasonic CT-34WX54 34" TV

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TV won't turn on

I'm pretty sure that my house was hit by lightning, or at least a near miss. My TV will not turn on. Is there a fuse in this TV that may need to be replaced?

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  • dparlato2 Jun 25, 2008

    Both the VCR and the TV were the only things hooked up to my antenna on top of the house. These were the only 2 electronics that stopped working. I didn't even blow a fuse in the house.

    I was hoping that this model of TV has some type of internal surge protection that I could check before I called the repair man.


  • sjk1991 Aug 06, 2008

    I have a similar problem. Paused a DVD, came back and the red power light was flashing with the TV off. Only way to stop the flash was to unplug the TV. Plugged it back in and pressed the power button. Started to boot up then shut down before any image displayed on the screen. Red power light continued to flash. Can't find anything about this in the owner's manual. Any advice? The cable was also out but now that is back on.

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  • Panasonic Master
  • 5,568 Answers

It may be too late for this advice, but if you live in a lightning prone area, you should consider having a 'whole house surge protector' installed.
The cost should be well under $300 (a lot less if you install it) and with the included insurance (most often for $25,000) it is a good investment.

If your house was struck, I'm surprised you don't have a list of things that no longer work.
It could just be an expired TV.

Posted on Jun 24, 2008

  • Steve Allison
    Steve Allison Jun 25, 2008

    Those two items along with PCs are among the most sensitive.

    If either of the failed items had any protection, it would be a cheap part intended to protect only against very short, low energy spikes on the power line and even those get tired after a few hits.



    If they were internally fused, the fuse may have died too late to protect much of anything or even as a result of other component failures.

    Fuses in general, in AC operated gear, protect mostly against setting fire to your home.

    They don't do much for the equipment in which they are installed.

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1 Answer

Won't turn on hit by lightning


Heres what you do, pick up the tv, open the back door and put it in the bin(trashcan). How you expect anybody to give you some help on fixing a tv thats been hit by lightning , beggars belief

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This morning I tried to turn my RCA TV (model 24R411T) on and nothing happened. I tried plugging it into a different outlet, still nothing. I tried leaving it unplugged about 10 minutes and trying again,...


Hello,

Power surges or nearby lightning strikes can destroy electronic equipment. However, most of the time, damage is minimal or at least easily repaired. With a direct hit, you may not recognize what is left of it!

Ideally, electronic equipment should be unplugged (both AC line and phone line!) during electrical storms if possible. Modern TVs, VCRs, microwave ovens, and even stereo equipment is particularly susceptible to lightning and surge damage because some parts of the circuitry are always alive and therefore have a connection to the AC line. Telephones, modems, and faxes are directly connected to the phone lines. Better designs include filtering and surge suppression components built in. With a near-miss, the only thing that may happen is for the internal fuse to blow or for the microcontroller to go bonkers and just require power cycling. There is no possible protection against a direct strike. However, devices with power switches that totally break the line connection are more robust since it takes much more voltage to jump the gap in the switch than to fry electronic parts. Monitors and TVs may also have their CRTs magnetized due to the electromagnetic fields associated with a lightning strike - similar but on a smaller scale to the EMP of a nuclear detonation.

Was the TV operating or on standby at the time? If it was switched off using an actual power switch (not a logic pushbutton or the remote control), then either a component in front of the switch has blown, the surge was enough to jump the gap between the switch contacts, or it was just a coincidence (yeh, right).

If the TV was operating or on standby or has no actual power switch, then a number of parts could be fried.

TVs usually have their own internal surge protection devices like MOVs (Metal Oxide Varistors) after the fuse. So it is possible that all that is wrong is that the line fuse has blown. Remove the cover (unplug it first!) and start at the line cord. If you find a blown fuse, remove it and measure across the in-board side of fuse holder and the other (should be the neutral) side of the line. The ohmmeter reading should be fairly high - well certainly not less than 100 ohms - in at least one direction. You may need to unplug the degaussing coil to get a reasonable reading as its resistance may be 25 or 30 ohms. If the reading is really low, there are other problems. If the resistance checks out, replace the fuse and try powering the TV. There will be 3 possibilities:

It will work fine, problem solved.

It will immediately blow the fuse. This means there is at least one component shorted - possibilities include an MOV, line rectifiers, main filter cap, regulator transistor, horizontal output transistor, etc. You will need to check with your ohmmeter for shorted semiconductors. Remove any that are suspect and see of the fuse now survives (use the series light bulb to cut your losses - see the section.

It will not work properly or appear dead. This could mean there are open fusable resistors other defective parts in the power supply or elsewhere. In this case further testing will be required and at some point you may need the schematic.

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1 Answer

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1 Answer

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1 Answer

We had a near lightning strike and now my tv (sanyo model ht27744)doesn't want to come on.


Lightening may have caused a surge on your power lines to the house and to the outlet the TV was on.
Do other things work on that outlet? If not you tripped a power breaker.If they do work check this.
Unplug the TV for 2 min or more and plug back in.
Try bypassing your surge protector you had it plugged into. It could have died when the lightening struck.
(no surge protector?) Bet you'll buy one for your next TV.
Look for 3000 joules and up rating for a surge protector and insure it has protection for a cable/antenna input too.
If this doesn't work the TV may be fried or internal fuse blown.
Time to take it to a repair shop or depending on it's age (5 years+) it may be time to buy a new TV and surge protector.
Near Lightening strikes can effect appliances from several inputs that could be affected from outside like Power, Cable, Antennas, Phone Lines that come into your house.

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1 Answer

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Hello DJ,

I am sorry to say but it sounds like you had a major surge go through your tv. Go to this area: TV Repair man in your area
Find a repair place near you and have them check it out.

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