Question about Sony Bravia KDL-42V4100 42 in. LCD TV

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Can you tell me whats wrong with my tv. When I turn on the power it turns on but turn back of and turns back on itself and instead of showing the Bravia it shows lines..

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  • 178 Answers

Is the TV turns on and off cycles all the time? Sounds like something wrong with the main board.

Posted on May 03, 2010

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Television will not turn on; it's plugged in, the red light is blinking, but it doesn't turn on! The TV was working fine earlier, I turned it off with the Charter cable switch, after I had paused a show...


I would have to say that you have bad capacitor in the power supply.Have you taken the TV apart?If you can take it apart,and send some pictures of the board with the power cord going to it,I can tell you which capacitors if any are bad.They have a rounded top to them instead of being flat.Also,how many blinks does the power light blink?Usually it's a series of flashes,and then it repeats.I hope this helps.Thank You very much!
Tyler

Aug 07, 2010 | Samsung LA40A450 40 in. LCD TV

1 Answer

Tv turns itself off


do the self test the set has.

when green light (power) comes on and then goes off, press and hold BOTH the Menu and Input buttons for at least 5 seconds and release both buttons on the front of the set.

The power light will display a error code: for example 2 blinks, a pause and 2 blinks (this is the most common one) and it will repeat the code about 5 times.

To get it to repeat it you have to unplug set, plug it back in and turn it one and when it fails repeat the check.

Let me know what error code you find and I will tell you what may be wrong. I hope it is 2,2 as it is the least difficult to resolve.

SD TECH

Jun 16, 2010 | Mitsubishi WS-55809 55" Rear Projection...

1 Answer

Samsung hcm4216W turned off by itself loops.


Instead of typing model number of your TV (that located on right hand side and on the back of TV) you published here part number of your TV's remote control. LOL.
Anyway... If it is LCD/plasma panel that you talking about - than power supply have bad electrolytic capacitors that have to be replaced. You can recognize 'em by bulged/swollen tops (instead of flat tops of good capacitors).
This repair required soldering skills.

Mar 09, 2010 | Samsung HCM4216W 42" Rear Projection...

1 Answer

My Magnavox digital converter box shuts itself off every 5 minute


Check that you have not got an auto power off setting on. Check that the aerial connections are good. That the signal is strong from the stations it is picking up. Weak signals can cause the box to shut down.
It the box is very hot when it shuts down, you might have a fault on it.

Apr 04, 2017 | Philips Magnavox M61117 (DBM61117)

1 Answer

WHAT IS WRONG WITH MY PHILLIPIS T.V.?


You are not the only one I can tell you that. I had a similar problem with my Phillips 42 in. LCD HD TV.

Here's the problem. The Power Supply Board. I opened my TV up(warranty was up of course) and found several bad capacitors. Phillips and several other companies were sold capacitors that although were highly rated failed within 5 years because of a lack of preservatives. All sorts of electronic equipment is now being effected due to these defective capacitors.
Solutions?
1. Take it in and have it fixed
2. Open it up, check the board for faulty capacitors(bulged or leaking) Buy a new Power supply board and install it.
3. Remove PSB, remove faulty capacitors and replace with compatible new ones.

Hope this helps

Sep 02, 2009 | 1997 Geo Prizm

1 Answer

When i turn my tv on the screen flashes digital then turns off


Basically, the TV is trying to power up the screen. If it fail to do so, the TV will automatically turn itself off to protect other part from being damaged inside. The problem is going to be the Backlight Inverter Board. It's the circuit board that supplies power to the screen. You can usually find a replacement board at a good price at Shopjimmy.com

Aug 20, 2009 | Sylvania LC370SL8 37 in. LCD Television

1 Answer

Turning off by itself


This TV probably needs the convergence amp IC's replaced. When they go bad the TV will not turn on.Call a good TV Tech and tell him you want the IC's upgraded to STK 392-150 instead of the original STK 392-120 and check all resistors in the circuit for proper value. They could be burned or open.

Jul 30, 2009 | Philips Magnavox 55P9271 55" Rear...

1 Answer

Green power light comes on, the turns right back off. No picture. Please help


I'm not sure what TV model you have. But, thing I can tell you is the most common problem.
Most of the time with flat panel TVs, the power supply for the screen fails. And the TV normally turns itself off to protect other parts in the TV from being damaged. Basically " Protection Mode".

You can try leaving the TV unplugged for 30 minutes so the TV can reset itself; then try again turning it on. If it doesn't work after that, it's time for the TV repair shop.

May 21, 2009 | Sanyo Televison & Video

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