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Rca lcd tv power surge lighting

My RCA L42FHD37 was apparently hit by lightning surge which seems to have come through HDMI cable attached to DVR provided by Direct TV. The TV power supply comes through a good surge protector that apparently worked as advertised. No other equipment run through the surge protector had been affected. After the event, the TV was emitting a humming noise and there was a faint green light at the bottom of the set instead of a brighter blue or green light as is the case when the TV is operating normally. The screen was completely blank and there was no sound. Is the TV likely "fried" or could there be a relatively simple fix such as replacing the power supply board?

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  • RCA Master
  • 33,294 Answers

The power supply is a likely place to find what's causing the problem

Posted on Jul 11, 2013

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 279 Answers

SOURCE: No audio, no video

Most likely the power supply. In most models, if the lamp goes out you will still get sound. However, the power supply is not a single piece swap. I would suggest getting a voltmeter, and check the voltage where the power cord meets the power supply. Then follow the circuit pathways, checking after each component, until you find a break in power. You are getting power to that light, so some power is getting through. However, the light works on much less voltage than the rest of the television, so probably there is a capacitor or transformer that's gone out.

Posted on Sep 04, 2007

  • 1153 Answers

SOURCE: No audio, no video

Can you find out what Led is not on or which comes up and goes out? Most of these sets have convergence problems. Or Power Regulators.

Posted on Sep 23, 2007

SOURCE: Power issue, clicking noise, turns off

The clicking is the power on relay closing and opening. This happens because the TV has several built in safety systems that will detect and over voltage and over current load situation.The power supply starts up for an instant, senses and overload of either or both kinds and then the safety switches trigger a cutoff. When this happens the power supply will not start up again because another circuit called a latch keeps it disabled. By unplugging the AC cord and trying to start it again releases the latch until the failure triggers it again.
On these TVs the power supply is rarely the cause of the shutdown. Something further down inside the TV has failed. Replacing just the power supply will not fix the problem. The most common reason there would be an overload would be in the high voltage circuit that lights up the 3 CRTs, next would be the coils around the CRTs that bend the beams to make the picture. This is normal circuit aging and wearing out. Unless you are very skilled with trouble shooting TVs I would recommend having a service center look at it. An authorized JVC shop would be your best choice because they will have access to the manuals and bulletins and have probably had other similar JVC units thru their shops.

Posted on May 17, 2008

yambo
  • 230 Answers

SOURCE: 61" RCA DLP won't turn on after power blip

Hi, thank you for visit fix ya.
Do you havve problems with power supply capacitors.
Replace this:
2200uf 25V, 220uf 25V ( bowed or vented). Located beside power transformer.
Thank you

Posted on Jul 26, 2009

StorminP
  • 64 Answers

SOURCE: Power Surge at Home

This time it came in on the cable, the clue was the cable box also blew. So if you had a cable surge supression device...for HDTV, I think you would have survived the second surge.

I do have the technology. It is a F-connector type and will handle HDTV signal.

f714961.jpg

Posted on Sep 17, 2009

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Hello. I have a RCA flat screen tv that lightning hit it through the cable wire but the tv was plug out. Is there by any chance the tv can be repaired?


lightning provides HUGE power surge to electronic components. it is very likely that your TV is now a paperweight.
call a tv repair shop in your area and have them take a look. Usually the initial evaluation is no charge, but call and see.

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I have picture but no sound through my hdmi connection. I tried a hdmi to vga converter but have the same problem.


When using VGA, you will need to run another cable from the audio out of the other device to the red and white RCA connectors on the back of the TV labeled Audio Input (left & right).

Sep 08, 2013 | RCA L42FHD37 42 in. LCD HDTV

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Can a tv working normally after been stuck by lighting


In most cases no, depends on level of surge. I've seen cases where a surge came in through an HDMI cable and take out the HDMI port on a TV, everything else worked. I've seen cases where a surge damaged multiple boards on a set. So again it depends how how big of a surge, and whether the surge comes in through the power cable or an video/audio input.

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LIGHTNING STIKE TV WAS OFF


well check the power supply regardless if the set was off if it wasnt protected with a good surge supressor that covers cable in as well then it may have taken a good hit
you may be able to get a supply and change it out
but most of these have no service parts available so would rewuire troubleshooting to component level

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Blue power light is on the tv cant turn it off


Unplug the TV wait 10 Seconds and Plug it back in. Should work fine

Sep 26, 2009 | RCA L42FHD37 42 in. LCD HDTV

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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.

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Powers on - no output to TV


Ok, this is general hardware failure. This will need to be repaired by a Sony tech asap. the central board is malfunctioning at this time. Contact Sony asap.

Jun 20, 2009 | Sony Playstation 3 (PS3) Console

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RCA LCD 42Lfhd37 Unusable signal


have you tried calling to the store you purchased it from and seeing if they will print you a new receipt. alot of stores will do this for you. also some times the store will cover the tv under manufacturers warranty and will send someone out to your house.

hope this help
please feel free to ask if you have any other questions.

Apr 06, 2009 | RCA L42FHD37 42 in. LCD HDTV

1 Answer

"Unusable Signal"


Ok. PCB means Printed Circuit Board.
It looks similar to the picture down below. A part must have gone bad on your PC board. So, the RCA shop ordered a replacement PC board to fix the problem. It's an interchangeable part. All newer TV now have PC boards, which each one hold a different function.ebc3c7f.jpg

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