Question about Polaroid 4011-TLXB LCD TV

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We were going to use our 4011-TLXB for a video conference and when we hooked up the computer the TV went blank. Now all I get is the red light. I know now that this a common problem. My question is which board is bad?

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Does it work in TV mode?
It can be either the power supply is not putting out all the needed voltages, right now you only have the 5vdc standby voltage (because the RED lifght is on) or the backlight inverter board is bad, it is the board that drives the CCF lamps which is the light source for the screen, it may be bad or not getting the 24vdc from the power supply. worst case will be the main board that is not sending signals to turn on the power supply and the backlight inverter board.

If you are going to DIY and have proper tools and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com

Posted on Jul 04, 2010

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1 Answer

When hooked to my computer, say no signal


REINSTALL ADAPTER IN THE DEVICE MANAGER SETTINGS. REMOVE THE ADAPTER AND RESTART COMPUTER IT WILL AUTOMATICALLY REINSTALL YOUR ADAPTER.

Nov 30, 2013 | Polaroid 4011-TLXB LCD TV

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I have a Polaroid 4011-TLXB and it won't turn on. I've read alot of people having this problem but mine is a little different. Most online articles I've read say that their tv turns on showing the blue...


U check the power supply board and it is good and power is on LED light power indication light up.Than only one possibility the tv Tuner signal board is shorted and dead.That the board,where the incomming broadcasting signal cable plug into it.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish Tuner signal board for the replacement.

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I have a polaroid 4011-tlxb tv and when i turn it on the blue light comes on but no picture i have to keep turning it on and off untill i get a picture


It may have dying 24vdc power supply due to bad caps, check that first, it may cause more damage if you keep turning on and off.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.

Please post back what you find.

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Replace power supply board from PTS. No parts available for PCB.
Generic part nr for IC3 is A6252M can't find one easily.

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I have a 40" LCD that sparked and will not turn on.


Turn it off and leave it off. It seems that your unit has some sort of major PSU fault, or a problem that is shutting down the Power Supply Unit, PSU. This happens so that no further damage, and possible fire will occur.

You need to take the unit to a reputable service centre/man and ask for a firm "Quote" for the work to be done.

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1 Answer

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check the backlight inverters.

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