Question about RCA L37WD12 37 in. LCD HDTV

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Strobe light I got this tv 12/25/2006 as a xmas gift about 7 days ago the picture on the tv started acting like a strobe light effect, first couple of days it would stop after 15 minutes now it is non stop, it was hooked up to cable I removed the box and unplugged the tv as rca recommended and is still doing it any suggestions on what might be going on? Rhonda

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  • Rhonda2654 Jan 10, 2008

    rca l37wd124

  • Anonymous Jan 26, 2008

    im having the same issue@ Any help would be appreciated.

  • Rhonda2654 Mar 04, 2008

    Here is what I found out it is the lcd screen I took it to the repair shop and on top of that it is not a part that is no longer made. So right now I am working with RCA to see what they will do

  • combigirl Nov 04, 2008

    im having the same problems. so new tv? mine the warrenty is up but they should still have to do somethign since it's only 2 years old and parts no longer made? such bs

  • Anonymous Mar 01, 2009

    tv blinks like a stobe light for the first 10-15 minutes

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Posted on Jan 02, 2017

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SOURCE: My vizio tv flashes like a strobe light

Sounds like your Backlight Inverter Board is going out, saw one on ebay for about $55 : ) have to get the one for your model tho...

Posted on Aug 21, 2009

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SOURCE: my rca L46 WD22 piture began to strobe ???

Turn down contrast.Worked for me.Don't know why. Jeff

Posted on Jan 07, 2010

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SOURCE: My Vizio VX42L is flashing like a strobe light.

Capitor C241 On power supply was the problem with my tv. Its under the heat sink.

Posted on Jul 14, 2010

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SOURCE: The tv is connected to a hdcable box (comcast) It

Hello,

Easiest way to identify the problem is to try and use a different TV set with the converter box. If you still have a brightness issue, it is the cable box that is causing problem. Call Comcast.

Otherwise, the tv itself is having issues maintaining a steady brightness, likely due to the auto-brightness control. You didn't mention which tv that you had, but there will be a sensor somewhere on the front of it that detects ambient light intensity. Try blocking this sensor with a piece of opaque tape (like electrical tape) and see if problem disappears. If it does, think outside the box for the root cause.

Were the fluorescent lamps in the room just replaced? Was a fluorescent lamp just added (does it make a difference if all the lights are turned off)?

If it doesn't make a difference, then the inverter for the backlight, or the backlight lamp itself, is near end of life, and needs to be serviced, in the case of a flat panel TV. On a regular tv that has a picture tube, the brightness gain is unstable, and likely requires a service shop.

Posted on Sep 22, 2010

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I TURN MY TV ON AND IT HAS A STROBE LIGHT EFFECT TO IT. THE PICTURE WORKS GREAT ITS JUST HARD TO WATCH IT OR PLAY A GAME ON IT WITH THE STROBE LIGHT EFFECT


I've fixed several of these, easy fix, you will need to replace both 470uf 35 volt capacitors on the master and slave inverter boards. So you will have to replace a total of 4 capacitors. The capacitors themselves are about 50 cents a piece. The inverter boards are on the far left and far right of the set. You will have to remove the back cover to see them. If you don't have the ability to replace the capacitors, you can just order new inverter boards for $40-$60.

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With risk that warranty will be voided, you could open it and look for problems. Most of these have a speed control so if yours does, vary that to insure it is not near the real slow end of the range.

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Canon 580ex II strobe issue


This depends on the mode you have selected on the flash gun. If you have Multi selected you will get the strobe effect. The strobe effect is all so present to help the flash set the correct exposure. It's not a problem with the flash or the camera. Spend some time reading through the flash gun manual. I have to admit it is not always clear. Also try Youtube for a video.

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1 Answer

Ttl auto does not work


Digital Camera Fully Compatible, Newly Developed S-TTL System "S-TTL" enables TTL auto shooting by an external strobe for a digital SLR camera as well as for a point & shoot digital camera.
INON S-TTL auto strobe supports any manufactures' model providing highly accurate exposure control.
Film camera era without strobe selection problem TTL stands for "Through The Lens" and TTL auto strobe system controls flash amount to provide correct exposure based on calculation by camera's internal sensor metering reflecting strobe light from a subject through the lens. This TTL system meters actual light amount reflecting from a subject providing accurate exposure.
When we start with the history of underwater TTL auto strobe, underwater camera?"NIKONOS V" released in 1984 was the first to provide automatic TTL flash control for underwater strobe SB-102, SB-103 succeeded by NIKONOS V compatible underwater strobes form other manufactures. The 5 pin electrical sync connector for NIKONOS V is most popular and widely adopted to connect an underwater strobe and underwater film camera (underwater camera/housing).
A film SLR camera has flexibility to select an underwater strobe. As far as housing has NIKONOS type electrical sync connector and properly wired, automatic TTL flash control is usable with any TTL auto strobe like Nikon SB-105, INON Z-220, Z-22 connected via electrical sync cable.
NIKONOS type 5 pin electrical sync connector and NIKONOS V with INON Z-22 strobe
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Film camera compatible strobe is not usable for a digital camera!? Underwater TTL strobe circumstances have been drastically altered with the spread of digital camera among divers. Some underwater housing for digital SLR camera has NIKONOS type electrical 5 pin sync connector as same as film camera housing. Since the housing has same NIKONOS type sync connector, existing film camera compatible underwater strobe has been considered compatible with a digital SLR camera via 5 pin sync cable but happened to experience error message on the digital camera or blackout on an image even the strobe worked. Why this happened?
This is because automatic TTL strobe system difference between a film camera and a digital camera.

The film TTL auto system makes single flash while digital TTL auto system employs pre-flash type making two to three flashes. Film TTL auto strobe system starts firing at the same time the shutter opens and reflecting strobe light from a subject is recived at a film. The reflecting light on the film is metered by the sensor to determine when to cease firing for correct exposure. This process takes only about 1/1000 second.
In contrast, digital TTL auto strobe system can not calculate adequate exposure based on reflecting light from a subject since image sensor (CCD/CMOS) reflectivity is comparably low comparing to a film. So digital TTL strobe system gives preliminary flash for very short period of time (pre-flash) just before the shutter opens metering reflecting light from a subject by the sensor to calculate necessary amount of light for correct exposure and starts emitting main flash at the same time the shutter opens. Canon E-TTL and Nikon i-TTL employs this system.

When we connect conventional film camera compatible TTL strobe to pre-flash type digital SLR via sync cable, the strobe makes full dump by pre-flash signal then the shutter opens before the strobe has been fully charged resulting in quite under exposed image only with ambient light. Even two time flash compatible strobe like INON Z-220 strobe, does not fully support a digital TTL and force to use Manual flash mode.





Film SLR:
A strobe starts firing at the same time the shutter opens and quenches firing when correct exposure has been obtained.
A film compatible TTL strobe connected to a pre-flash type digital SLR via electrical cable flashes does not support TTL auto exposure resulting in synchronization only with first pre-flash or totally uncontrollable.
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The birth of digital fully compatible S-TTL S-TTL auto compatible INON D-2000 strobe and Z-240 strobe works in TTL auto mode by simply setting their main dial to S-TTL position. A film camera seems to depend more on photographer's skill, experience and feel since the camera does not allow checking images on site. A digital camera allows us to check images right after shooting and enable to try to shoot again as much as we like. And high capacity memory card further allows to shoot hundreds of images. The digital camera makes entry level of underwater photography getting down and nowadays more people buy a digital SLR camera and underwater housing even they have just started underwater photography. However underwater photography gets more difficult because underwater strobe does not work in TTL auto.
INON is among the first to support digital TTL auto system with "S-TTL" auto mode equipped D-2000 strobe and Z-240 strobe.
The proper name of S-TTL is "Optical Synch TTL". S-TTL enables to perform in TTL auto exposure as same as genuine TTL strobe from camera manufacture, based on camera's built-in flash light to use as a signal to be transmitted to a strobe. S-TTL uses digital camera's built-in flash light not as a light source but as like a controller to trigger S-TTL strobe.
The built-in flash of a digital camera makes weak flash (pre-flash) before main-flash to calculate exposure. This pre-flash is transmitted to S-TTL strobe to control the strobe to make pre-flash to a subject. The reflecting light from the subject goes through the camera's master lens to an image sensor then a processor calculates main flash light amount for correct exposure.?Finally the built-in flash makes main-flash which is transmitted to the S-TTL strobe to cause main-flash of the S-TTL strobe.


Digital camera's built-in flash lights are transmitted via an optical fiber to the
S-TTL strobe to make pre-flash and main-flash instead of the built-in flash.
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1 Answer

FLICKERING BACK LIGHT


Sounds like you have an LCD tv with backlight problems. Check power board for domed capacitors and replace them. next check connections on the inverter boards. they are on the sides or just one side. Becareful there is high voltage output from these boards. If the cable from inverter board is not good to the screen you can get a strobing. the inverter boards may need replaced. or cales to screen may be bad. The panel also could be bad.

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1 Answer

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Well, if there are no color lights on this strobe effect, a fairly standard color code for AC is Black is HOT White is Neutral, no insulation is ground and Red would power your strobe ( I Think )., I would hate to misinform you. Is this an AC powered strobe? Like when you wire up a ceiling fan you have the same color code. I'm sorry I can't help you further, and messing with live AC can be unsettling.

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1 Answer

The picture blinks like a strobe light


The backlights and their power supply has to be replaced to fix the set. You will have to bring the set in for service to have this done.

Jerry G.

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