Question about Proscan 42LA45H 42 in. LCD TV

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The picture of tv is moving lie a strobe light a d the sound is fluttering. What could be the cause of this?

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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

Tv flutters then shuts off


Sounds like a high voltage problem, I would look at the defelction board part number A1302180A

Apr 14, 2014 | Sony KP-51WS510 51" Rear Projection...

1 Answer

Rca hdtv dlp screen flashing


Sounds like it could be the power supply. Try changing the brightness of the screen and changing picture modes like movie or standard. If this causes the flashing to change in severity, it will most likely be the power supply board

Dec 13, 2013 | Televison & Video

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

I've got a 37" LCD made by Vizio. After about twenty min. the screen start to flutter or flicker like a strobe light. Power on the unit stays on while this occures. What cani do to fix this?


I am having the same issue, I think the best solution is to replace the inverter slave and master boards. These are the circuits that controls the backlight and causes the flickering when they are malfuctioning.

Dec 15, 2009 | Vizio L37 Television

1 Answer

No sound and no picture. Tried several power


Its Your lcd control board or inverter boards causing this problem. Either board(s) need to be replaced, if the LCD control board developes a fault condition it will cause the inverters to strobe which in turn causes the backlight lamps to flicker .... if the dc-to-dc converters on the inverter board or series resistors open up this will also cause the same affect.....

Nov 03, 2009 | Philips Magnavox 15MF400T 15 in. LCD...

2 Answers

Mitsubishi VS-60705 - picture flutters vertically and horizontally


This sounds like one of the 9 volt regulators on the small signal board is going bad, supplying less than 8 volts. I have seen this is several of those sets. The IC needs to be replaced and if you do not have experience in servicing projection TV's then I suggest letting a qualified tech handle it for you.

Jul 09, 2007 | Mitsubishi VS-60705 60" Rear Projection...

1 Answer

Fluttering


I've worked on a few of these sets and have found C2P08 to cause something like rolling bars in the picture and have found C2P05 to cause lines jumping in the picture.

Feb 10, 2007 | Mitsubishi VS-60607 TV

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