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I had a power surge from lightning and I want to change the fuse as a first check.

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Lawrence Oravetz

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Power surges usually fry a lot of components before the fuse blows. Sometimes the fuse never blows, but the damage is done. You can change the fuse if it's blown, but I don't think that will fix anything.

Posted on Dec 29, 2018

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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

Dec 08, 2016 | Office Equipment & Supplies

3 Answers

Mintek DTV-260 Dead after power surge?


if its still covered by warranty? have it checked by a local pro or im not sure but I think mintek went out of business.

Jul 22, 2008 | Mintek DTV-260 26 in. LCD Television

3 Answers

Stopped working after a storm


Did you have a power surge after a loss of power? If so your TV is ruined from the surge. In the future use a surge protector if don't already.

Aug 20, 2016 | Televison & Video

1 Answer

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

Mar 22, 2016 | Samsung PN51E450A1FXZA 51-INCH 720P SLIM...

1 Answer

My sony bravia NSX-40GT1 is dead....no lights...nothing. (lightning strike) If I replace the P/S board will that get it up and running?


First things i would check are the powerpoint and then the fuses
a lightning strike at the powerpole may take out a fuse at the fuse box thus no power at the powerpoint,a power surge could take out the fuses on the powersupply board but check all fuses ,be sure to unplug the set from the wall first.
good luck.

Len

Sep 06, 2014 | Televison & Video

1 Answer

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).

Sep 05, 2011 | Mitsubishi WS-55511 55" Rear Projection...

2 Answers

After a lightning storm, my TV will not turn on. Is there a fuse or something on the in coming power that may have blown causing it not to turn on?


Any TV subjected to a power surge will have problems. If you can remove the back cover, do so. Locate the glass fuse. In the best situations the fuse is clear and opened, and replacement will repair your TV. In worst cases the fuse may be blackened, and you will see that many components are burned and shattered. If this latter is true, only replacing the TV is your best bet. In many cases electronics may be connected to surge protectors, but lightning will over ride these devices and cause damage. I have seen this happen many times.Thanks for asking and show all hands of support!

Jun 23, 2011 | Sanyo AVM-3659S 36" TV

2 Answers

Sony wega kdf-e50a10 hit by lightning now it will not turn


follow the power cord and just check the input fuse if you've got a surge protector on it it may have just blown the fuse from a spike. It doesn't hurt to try. This fuse is inside the tv.

Sep 15, 2009 | Sony Grand WEGA KF50WE610 50" Rear...

1 Answer

Lightning Surge, RCA 32V432T, will not power up


Throw TV AWAY,these tvs had alot of problems without lighting hitting them,It probably played out FBT flyback transfomer CK hori out put Transistor if shorted replace FBT also.

Aug 06, 2009 | RCA D52W19 52" Rear Projection Television

1 Answer

Won't Power-On


Do you have a VOM meter? Unplug the set and open the back, the fuse should be easy to find "small glass cylinder with a metel cap on each end. Test it for continuity. If it tests good or shorts again after replaceing then there is a lot of other things that can be wrong. Let us know. If you replace it it is important to use the same exact value which should be written on the board next to it also NEVER jump it with a wire! Hope this helps. Don

Aug 16, 2007 | Sony KV-36FS100 36" TV

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