Question about Polaroid FLM-3734B 37 in. LCD HDTV

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No picture after overnight off

I cant get picture back on after overnight off. I must use a power bar to off the tv and then turn back on. I have cable box for high channels and a remote programed to turn both tv and channel selector back on

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Sounds like your standby controller is going out the problem is with polaroid its a board replacement video board.

Posted on Jul 01, 2008

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Which model
http://www.fixya.com/support/t293971-37_polaroid_lcd_tv_turn

Posted on Jun 27, 2008

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2 Answers

Cant get tv to turn on


Hi,

Try leaving it out of the power overnight. Also, check all the cable connections.

Apr 05, 2008 | Ultra LCD30-500 Television

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LG 55LE5400 LED TV will power up, but only shows black screen with no picture and no sound. Any ideas?


Fault at 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://electro-medical.blogspot.com/

In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
Before going further; try a hard reset first. If it does not help you, replace the main digital board. There are two methods to reset TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight is better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; visit the site linked here.

Jun 11, 2016 | LG 55LE5400 TV

1 Answer

My LTV-32w6 westinghouse powers on & has sound but displays black screen with very faint colored vertical lines. It shows like this for about 1min before it goes into standby mode & the blue power...


Depends on what is causing it...

Vertical bands of faint black are generally caused by filtering capacitors and can be found in the power supply or the 5 volt supply or even the Video processing circuit...it is not an easy task to identify the source of Video hum bars.....we also call them Jailbars.

Another problem seen is faint black lines caused by the TV set being in 4:3 mode all the time....right at the edge of where the picture ends and the black pillars begin, we see a faint black line that never goes away and is normally seen with a full screen....

That is actually image retention, but it's caused by the crystals that create the picture becoming polarized or ionized over a very long period of time....and it's not easy to DE-Polarize them !

But there are some theories out on how to do that....
Certain people suggest running the TV overnight with an ALL-WHITE picture and some suggest an ALL BLACK PICTURE...and some suggest alternating between both !!

Now, a black picture is easy to make, you just deactivate the Video Mute (blue screen) and set it to an unused Video INPUT overnight....

About the only way to make a white screen is to use the USB port for pictures and take a very bright outdoor shot of a piece of white paper that hopefully is out of focus too....That would create an all-white picture that you can plug into your TV set overnight....

Now if you decide to try this, deactivate any displays on your TV set...all you do is press the display button until the Video and/or USB input numbers disappear....

Next day , set it back to normal TV and see if it's gone or if it's REDUCED....try it again if needed, or try the exact opposite if you see NO RESULTS....

Sep 20, 2012 | Westinghouse Flat Panel Televisions

1 Answer

LG 32LH30 screen won't power up. Red light at bottom glows hi to low, but no picture. Unplugged and waited overnight, plugged in again, still no picture.


There is a way to tell if you have a bad board, or a bad panel.

1. Make the room dark and turn on the TV. Can you see it light up? If so, does it stay lit or turn right back off?

2. If the panel lights, but you have no picture, I would suspect the T-con. Some units now have the T-con incorporated with the main board, so you will need to check.

3. If you never get any light at all, then I would suspect the power supply.

4. If you only get light for a second or two, then you have a bad panel.

Apr 10, 2012 | LG 32LH30 32 in. LCD HDTV

1 Answer

Vertical colour bars


The problem is in the LCD controller board is overheated because the power supply unit is at the bottomof the TV and the heat rises upward to the vent on the top of the TV. You can verify that is hest problrm by running TV with the back removed and have a small fan blowing on the top secdtion of the TV where the LCD controller is. This how I fixed my scrambled picture after warm up (I added heat sinks to the IC on the LCD controller board) : http://s807.photobucket.com/albums/yy352/budm/LTV-32W3HD/
You can try it if the board was not badly damaged already by the heat. My has been running great for over a month now.

Feb 04, 2010 | Westinghouse LTV-32w1 32 in. HD-Ready LCD...

1 Answer

I accidentally left my tv on overnight and it wont turn on


this could be anything from a blown fuse to a power supply or mainboard issue . you realy should have a tech come in and look at it to give you an estimate of repairs

Dec 09, 2009 | Flat Panel Televisions

1 Answer

Samsung HP-R5052 Plasma TV


It related with Power Board(50%) or Y-Main(50%).
But, if you use the power bar with surge protacton, need to check
the power bar's lamp when the TV is turning on & off.

Jan 31, 2009 | Samsung HP-R5052 50 in. Plasma HDTV

1 Answer

Sabre 42 in plasma tv stuck on component 1


remove the power from the wall and leave the TV off for at least an hour, the static charge may have shorted the circuit board for the pront panel controlls.
after an hour or so plug it back in to see if has reset itself

hope this helps

regards

Nov 27, 2008 | Flat Panel Televisions

1 Answer

Time TV


By saying that volume and picture controls work, do you mean you can access the TV's onscreen menu? If so, you may need to re-scan for available channels if you are using the TV's internal tuner. If the memory of those channels has been lost, the TV does not know where to "look" for a signal. You may also need to perform a power drain:

1. Unplug the product's power cable so that the device is not grounded to the house. Do not simply turn off the power-bar if one is in use.
2. Press and hold in the products power button for 1 minute to release the retained electricity from the capacitors and circuit board.
3. Plug the product back into the wall outlet rather than a power-bar to rule it out of contributing to the problem and turn the device back on. After this step, try the channel scan again if it didn't resolve the issue the first time.

Oct 16, 2008 | Flat Panel Televisions

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