Question about Toshiba Televison & Video

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I have a Toshiba 27AF43 27 inch television that no longer powers on at all. We had a lightning strike right next to our house and it tripped our breaker box. When I flipped it back on all other electronics came back on except for the Toshiba. I'm assuming that it either has a A) A fuse blown or B) Something else blew out and it's toast. Any help would be great.

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Lightening does a LOT of damage, I wouldn`t have it repaired and I`d contact my house insurance immediately. I`ve repaired lightening damaged sets before only to find that the set only lasts a short period before different fault appears and once you make a claim on the insurance for a repair, they won`t pay out again for another repair on the same set. The problem you`ve got is when the lightening hit the power line, it sent a transient or high voltage pulse through your power lines. The computer and a lot of the other circuits in your set only run at about 5 volts. If your TV power is normally 240 volts like ours is and the transient pulse rises 1,000%, (In practice a lot higher than this) in effect the power lines in your home will have risen momentarily to 2,640 volts. This means that the other voltages in the set will have risen proportionally with the input voltage meaning that the 5 volt lines will have risen to 55 volts which would either destroy the circuits on that line or as you will find out later if you have the set repaired, weaken the circuits which may survive for a short period until you`re sat down watching your favorite TV program and one of these components decide to give up. Take my advice and claim for a replacement set, You`ve been warned. Ian

Posted on Jul 24, 2009

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Which circuit board on my Smart TV might be broken after a possible lightning strike. There are two main ones. The power is getting to the unit, but I can't get the menus, connections etc to work.


Nobody can predict, what might have been happened to your TV after a lightning strike. Do you thing anybody can? Is any technician have a super-natural power to predict the faults that might have been happened due to lightning (More than 10 Million volts to start on stroke) ? Can you?
Sorry.
Contact the authorized service center. OK?
http://electronicshelponline.blogspot.com/

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you problem is main board got striked. replace back same seriel# main board. good luck!

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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).

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Lightning strike, blows internal fuse (6.3v 125/250) on plug in.


sounds like the lightning strike took out at least the power supply if not more. sorry to be bearer of bad news.

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If it took a lightning strike something in the heating coil is shorting to ground tripping the breaker. DO NOT Keep trying it, you could cause more damage or even burn your house down.

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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.

Jul 06, 2009 | Sanyo Televison & Video

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Tv hooked to cable system and next door neighbor had a lightening strike. After that, the tv does not work any longer--no power light at all.!


Your TV got fried when the lightning struck. Time to get another one.

This time be sure you plug it into a surge protector power bar, available at radio shack, walmart, any TV or computer store.

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1 Answer

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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.

Sep 15, 2008 | Televison & Video

1 Answer

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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