Astar LTV-2701 27 in. HD-Ready LCD Television Logo

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Al Sather Posted on Nov 24, 2012
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Power surge caused by lightning strike, TV is dead, any Thoughtd/ does this damage every components?

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Back2life Electronics

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  • Astar Master 933 Answers
  • Posted on Nov 24, 2012
Back2life Electronics
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Lightning can cause serious damage. You will surely want to get a professional diagnoses. What is damaged depends on where the surge came in at, and the intensity of the surge. If the surge came in through the power cable, most likely your power supply board has damage. But I have seen situations where the surge came in though an HDMI or coax connection and just take out the main board. But the moral of the story is to get a proper diagnoses, you could have several boards damaged.

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0helpful
1answer

When and How Should a Surge Protector Be Used on a Fixed Switch?

Common Causes of Lightning Strikes
  • Outdoor network cables or power cables are routed overhead.
  • A switch is deployed outdoors but is not properly grounded.

Damages of Lightning Strikes
  • If power cables of a switch are routed overhead in an outdoor environment, lightning strikes may burn the power supplies.
  • If network cables of a switch are routed overhead in an outdoor environment, lightning strikes may burn interfaces of the switch.
When a switch undergoes lightning strikes, overvoltage is induced by lightning on network cables and transmitted to interior of the chassis. The surge protection measures, such as lightning rod and chassis grounding cannot prevent the damage. Therefore, surge protectors or surge protection circuits are recommended.

Surge Protector Use Precautions Take the following precautions to protect a switch from lightning:
  • Ensure that the ground cable is connected to a ground bar or a ground point on the cabinet.
  • Avoid routing cables overhead in an outdoor environment. Bury cables underground or route them in steel tubes.
  • To protect network interfaces against lightning, use 8-line surge protectors (or Huawei certified 4-line surge protectors).
  • When installing a network interface surge protector, connect the IN end to terminals and the OUT end to network interfaces of the switch.
If a fixed switch is installed in a network box, follow these instructions:
  • Connect the ground cables of the switch and surge protectors to the ground bar in the network box.
  • The maximum length of a ground cable cannot exceed 40 cm, and a length of smaller than 15 cm is recommended.
  • If the network box is located outdoors and power cables are routed aerially over a long distance (more than 300 m) to the network box, it is recommended that you install a power supply surge protector in the network box. The decoupled power cable must be at least 3 m long
S2300 Switch Thunder link com
0helpful
1answer

I replaced the power board with one from shop jimmy but still get no power/stand-by light at all. i can heard a very quiet rhythmic clicking from what sound like the power board.

1. Do you use a TV antenna like the outdoor or a Dish ?
2. Do you have power lines that supply to your house overhead or completely underground ?
3. Did the fuse at the house blow when you had the lighting power surge ?

If your answer is YES+ANY+YES - your logic board could also blown.
If your answer is NO+Underground+YES - your logic may not be damaged.

As Tom suggested, look for other obvious burnt components or even smell closely to confirm (if you have a nose for it :-))

also check the video below
How to fix tv after lightning strike power surge
1helpful
1answer

I have a LED TV that was hit with a power surge caused by lightning.

Could be your household insurance would cover the damage.

Unless the lightning strike was very local to you, on your side of the local substation, the responsibility for the cost of repair or replacement could be the power company's.

Surges from lightning strikes aren't supposed to get past the electrical substation.

Old-fashioned valve tvs and radios sometimes survived huge surges on the powerline and even minor lightning strikes to the antenna but solid state semi-conductors and micro chips aren't very tolerant to overloads of any sort. These days a tv is not longer a tv in the conventional sense but like cars and radios should be considered as just another computer that is full of CMOS chips which are extremely sensitive to overloads and static discharges. Even the screen of your tv is made up of semi-conductors.

I would be very surprised if the set isn't a write-off.
0helpful
1answer

How do I diagnose and fix an LCD HDTV whose screen will not come on because of possible lightning strike?

needs circuit testing doubt you would actualy be able to see any damage to circuit boards doesn't take much of a power surge to knock one out tv engineer needed
1helpful
2answers

Plasma Panasonic TV stopped working

Lightning-damaged electronics are a gamble to repair. Sometimes the problem is a single component, but more often multiple components are damaged, and even if you get it working, something else may die shortly thereafter. If you are lucky, only one board was damaged. My recommendation, if you have homeowner's or renter's insurance, is to put in a claim for the TV and get it replaced.

Having put forth that caveat, the blinking red LED hints that you may have enough left of the set for it to be repairable, especially given that much of a plasma set is already built to cope with high voltages. Try downloading a service manual and following the troubleshooting procedure. Here's the link (it's a Hungarian site, but there's enough English available to find things):
Service manual eprom result list ElektroTanya Service manuals and repair...
0helpful
1answer

Is the module of lg tv 32ld330-mb affected when theres a lighting strike???is there a chance to be fix??

The damage from a lightning strike tends to be random. Sometimes it's minor, and only a few parts are affected. Other times, many parts are ruined, or destined to fail soon as a result of the current surge.

If the strike came over the power line, the input surge protectors in the power supply should be replaced, even if they look good. It would be prudent to replace the entire power supply. If you had the set plugged into an external surge protector, that should have taken most of the hit and should also be replaced. (Some surge protector manufacturers will pay up to a certain amount for repair or replacement of equipment plugged into their products if it is damaged by lightning.)

If the lightning came over an unprotected input cable, fixing the set would be a gamble. You could end up changing a lot of modules, beginning with the main board.
0helpful
1answer

We have PDV42S10, There is no power to TV. The green light does not come on. There is power in socket . Thank you

In most cases, if the main power supply fails, the low voltage supply that provides enough power so the set can receive input from your remote, also lives on to signal problems, often by flashing the power LED in a pattern.

In your case, apparently the low voltage supply is also dead.


This can be caused by both supplies being damaged from a line surge caused by 'dirty' AC power, or a spike from a lightning strike somewhere in your power network.

These spikes can travel long distance so a strike need not be all that proximate to do damage.


If no fuse holder is found on the back of the set, it may be necessary to remove the back panel for access.

If you choose to do this, it is safer to leave the set unplugged overnight to allow any hazardous voltages to discharge.


Look for a separate board or an area which has larger components in it.

These will be cylindrical cases and larger block-like parts.

If there is a user-replaceable fuse in the set at all, it will most likely be in that area.


If this damage was caused by a high voltage spike replacing the fuse may be fruitless and if a replaced fuse blows again, then other circuits have been damaged and major boards will have to be replaced as well.

The cost of reviving a lightning damaged set of any kind can often exceed the cost of replacing the whole set.


Even the most primitive plug strip contains components that afford some protection against this kind of damage but the best protection can be had with a 'whole house' surge suppressor.

These cost ~$200 US and feature insurance against appliance losses up to $10,000.

They require access to the main breaker box, safety precautions and a few tools for installation.

0helpful
1answer

Our electricity went out for a few minutes, and since then the TV will not turn on. The green light is flashing. We tried resetting it by pushing a pen point into the reset hole, but it does nothing. ...

Your power outage may have been caused by a nearby lightning strike, or any number of
1000 different reasons that cause power surges, brown-outs, voltage spikes, inductive loading,
and/or utility pole breaker trips and resets (this accounts for your power loss (a pole breaker trip),
followed by restoration of power (the pole breaker automatically reset) - even plain old high electrical demand causing an overload due to air conditioning demands caused by hot weather.
When the pole breaker reset, your TV caught a power surge.
Whenever a power outage occurs, quickly power off (or better, unplug) any/all computers, TVs,
etc. that are not protected by surge-protection.
As an electrician, when someone loses an item of electronics concommitant to an electrical
anomaly, its almost
always traceable to a nearby lightning strike (or the power company provided equivalent), accompanied by inadequate surge protection for
the VCR/TV/Computer/Stereo/uninsured valuable electronic item/XBOX 360/Nintendo Wii.
Surge protection can
be provided by the consumer at the power strip (a good one with builtin MOV protection and a
warranty costs $20, whereas a zero-protection 4-outlet or 6-outlet power strip will cost $4-$5).
Your electrician can provide whole-house surge protection where a whole-house MOV-based (metal oxide varistor) surge protector, or per-circuit protection can be installed with
a GFCI breaker (or better, an AFCI breaker) can be installed.
GFCI = ground fault circuit interruptor
AFCI = Arc fault circuit interruptor
Lightning protection is especially important in Florida, which is the "lightning capital of the world."
I've never found a good solution to lightning-fried electronics (random power supply components are destroyed and/or fuse blown), other than renters insurance or homeowners insurance.

Your only real hope for an economical fix is to look for a blown fuse, and replace it.

If desperate to attempt a fix on your own, you could try replacing the entire TV power supply as a module, but even this provides
no guarantee of a fix - lightning damage can extend beyond the power supply.
When traveling, I will always unplug everything before I leave (except the security system),
and also turn off the breakers to unneeded house circuits (which kills the wall switches that
control interior lighting - forcing a burglar to use their flashlight instead of interior lighting)
which is the least convenient lightning protection, but highly effective, and cheap (free).
0helpful
1answer

Have a Toshiba MW24F11 combo tv. Near lightning strike through surge suppressor. Will not turn on. 6.3 amp fuse blown; replace, blew again. Next step, or start looking for replacement. Set is 25...

power surges generally damage diodes and capacitors causing the fuse to blow, any reputable tv shop can repair for a fraction of replacing this set.
0helpful
1answer

Surge from lightning strike damaged tv and won't turn on.

Unless you are skilled at trouble shooting power supplies , you will be better off getting a skilled repair center to repair yourset. If its repairable I have seen surges from lightning strikes make the set no longer cost effective to repair.
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