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TV flickers like a strobe light and nothing is displayed on the screen except the flashing lights & "static" (electrical) noise from the main board. All 3 internal boards have been replaced already.

Vizio E701i-A3

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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alpug
  • 1961 Answers

SOURCE: my vizio gv42l fhdtv 10a picture flickers like a

you need to check first the power supply board whether the output supply 12-24vdc for the inverter board is stable and not flactuating..you can measure the output voltage with a multitester..you get a voltage output of 12-24 with the inverter board is connected or loaded to the system.be carefull of the high voltage at the inverter board..once the output is stable replace the inverter board or you can measure the output of the inverter be very carefull..the output range upto 500vac.be carefull..if the high voltage is stable replace the lamps...tnx and good luck..

Posted on Jun 03, 2010

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gopakumarg43
  • 74198 Answers

SOURCE: Have a scrolling/rolling video on screen of a

Fault with its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

Posted on Oct 22, 2014

  • 495 Answers

SOURCE: I got a vizio E701I-A3 an it doesnt show a picture when it powers on,but it does light up . I replaced the main board an t con board on it already.

Probably a bad panel. Those vizios are terrible. I worked on a 55" that was 9 months old with the same problem. replaced all the boards, ended up having a bad panel. See if you have voltage on the wires going to the panel. if so, its most likely bad

Posted on Sep 02, 2015

SOURCE: Vizio E701i-A3 no audio or video have backlighting; should I replace all 3 boards or just main board

Just the main board

Posted on Jul 05, 2016

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Vizio e320i-a0 that flicker constantly


Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis.
http://electro-medical.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Apr 29, 2016 | Vizio E320i-A0 32 Class LED Smart TV

1 Answer

Snow on screen with no picture.loud noise on audio


42" Vizio TV flickering strobing easy way to repair VW42L ...

? 2:49
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Dec 2, 2013 - Uploaded by ozzysslayer
42" Vizio TV flickering strobing easy way to repair VW42L HDTV10A LCD TV ... EASY How to Fix Samsung LCD TV Flashing Flickering Screen!Missing: vp422hdtv10a ‎snow

Vizio Replacement Boards - ecoustics.com

www.ecoustics.com > ... > Plasma & LCD TV Forum
Apr 15, 2009 - I have a vizio p42hdtv10A that just went into a black screen. .... I have a Vizio VP422 HDTV10A that will not stay on or show a picture. I removed ... Vizio vp422 hdtv10a
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Dec 30, 2015 | Vizio VP422HDTV10A 42 inch 720p LCD HDTV

1 Answer

My coby flatscreen comes on and works but strobes flashing light but works good just with strobing light ! whats going on?


If your LCD TV or monitor has stopped working, or is displaying one of the following symptoms, then it's a candidate for some new capacitors
- Flickering screen
- Screen image disappears after several seconds
- Dim screen
- Slow start
- Power LED on, but no picture
- Unusual colors and/or lines
The primary cause of LCD TV and monitor failure is caused by faulty capacitors. You can examine the capacitors in your LCD TV or monitor and actually see if they are bad.
If they appear bulged on top, then they need to be replaced.
New capacitors will solve a host of problems in LCD monitors and TV's and will extend the life of your monitor or TV by several years.
Check the cables, connectors and connections.
Take it to a repair shop.

Feb 22, 2015 | Coby TFTV4025 40" LCD TV 1920x1080, 60 Hz,...

1 Answer

GV42L FHDTV10A CCFL & Inverter Board issue


Is the strobe light affect the entire screen? or just a part of the screen? I would say you either have a problem with the inverter circuit or power supply. You need to ensure that the inverters are being fed a clean 24vdc. If you are getting ripple voltages in the 24vdc power supply, your backlights will flicker. Also check the inverter boards and also the power supply capacitors for any bulging tops. I would also suggest you monitor the "backlight on" signal from the main board. It should be around 3.3 Vdc and again no ripple.

Jun 11, 2013 | Vizio P2 42 in. HD-Ready Plasma Television

1 Answer

LG 55LD520 picture problem


the problem with these sets (all brands) is it could be any board in the set or even the panel used for the display---

Jun 06, 2012 | LG 55LD520 55 in. HD Ready LCD TV

1 Answer

No temperature digital display in refrigerator, light working, but loosing temperature in fridge & freezer


if its a G.E. make first check the PTC overload on the compressor to make sure compreesor is operating, if this isnt,check voltages on ptc,if no line voltage here,then check for the motherboard in the rear behind a panel as this board when bad will make digital readout go out and lights strobe and you may hear a clicking noise from there also as the lights flicker or strobe this board failure can be caused from a surge within the unit by a light bulb burning out or a power surge from outside too

Feb 10, 2012 | Refrigerators

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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Apr 30, 2010 | Olympus FL-20 TTL Flash

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.

Mar 25, 2010 | Televison & Video

1 Answer

Symphonic WF32L6 on power up power light flashes about twice per second for 20 seconds. Screen displays ''DIGITAL TELEVISION'' then power light flashes about 4 times per second for perhaps 10 seconds more,...


Ur Main Tuner signal board is dead.Replaced this board will solved this problems.Tries Shopjimmy.com,Ebay.com to buy a refurbish Main Tuner Signal board for the replacement.

Mar 08, 2010 | Televison & Video

4 Answers

Flickering screen (likea strobe light)


one check your refresh rate in windows boot the pc into safe mode if flickering is gone then lower your refresh rate if not replace lcd inverter board.

May 16, 2009 | Gateway XHD3000 LCD TV

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