20 Most Recent Polaroid TLA-01511C 15 in. LCD Television - Page 2 Questions & Answers

I cannot say enough about this particular brand. The biggest problems are the many electrolytic capacitors in the signal board that go down. You may have a bad cap or two in the power supply. The problem would be in the signal board (Where the RCA connections and RF connectors are). Replacing the caps are very time consuming and the danger of pulling a trace away from the PC board can happen. This may destroy the TV. Just be very careful. Thanks for asking and show a few hands of support!

On older tube televisions this was referred to as the "warm in period". You don't get that on newer LCD as there is no tube to warm. SO, what you've got here is a growing problem with your LCD inverter board or your backlights. Both can be repaired rather easily (and cheaply) at most television repair shops. I've seen a lot of this on polaroid sets, and it almost always gets much worse very quickly. Eventually the TV will refuse to turn on. My recommendation is to get to the repair shop right away!

Hi,
Power on the unit in the dark room then shine with the flashlight directly in the screen, you will barely see the images. This is because your backlight is not functioning. The following reason was the caused.
1. Power supply - missing B+(supply voltage) coming from this board feeding the inverter board. The B+ produced an out-of-regulation condition and drives it to overload which caused the symptoms. Look for leaky/dried electrolytic capacitor, sometimes it has a bulged/dome at the top but not all, you must have a capacitor checker to determine its condition.
2. Inverter board - even the B+ is good from the power supply, if the fuse, driver transistor, driver transformer is faulty no output to the backlight resulting to black picture.
3. Busted backlight - even inverter board is good but one of the backlights was already busted, it will trigger the protection circuit and will shuts-off the B+ to avoid overload to high voltage transformer.
Diagnosing the fault may technical if you're not handy with electronics. If you don't have necessary tools and test instrument and can't troubleshoot the symptoms yourself, I would advice you to look for an experienced technician to isolate the problem.

Also, check if your unit is under warranty period, avail it because the manufacturer will fix it for free. Don't attempt to open the back cover(it will void the warranty).
Hope I helped you.
Have a nice day!
Thanks for using Fixya.

It sounds like your backlight is beginning to fail.

The input depends on the type of cable you use, if you use an HDMI you will want to set the TV to an HDMI input. If you're using components set the TV to component or y/pb/pr to change the input press the input button multiple times this should cycle the inputs for you. If you're using coaxial cables try channels 3,4,60,62,73,75 Hope this helps!

Daniel Busa
DISH Network
Customer Service

id recomend yopu head on over to
www.acidmods.com

they deal with a lot of hard mods with different things they can probably help you better than we can over here

good luck

This problems is the long LCD inverter board is dead.This long LCD inverter board help the LCD screen panel to have a backlight to prduced a picture.Tries websites like Shopjimmy.com,Ebay.com to buy a long LCD inverter board for the replacement.

youtube has video on this set or one similar. just search for Polaroid repair

Tv turn on now,u have a picture only flashes few sec and than dies and have sound left only?Yes,ur tv have a dead board,that call the LCD inverter board,this board is a long board.This long LCD inverter help the LCD screen panel to have a backlight to produced a picture.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish long LCD inverter board for the replacement.

I had a similar problem with my 42 in Philips LCD HDTV.

Here was the problem. My Power Supply Board had several bad capacitors. I opened my TV (warranty was expired of course) and found four bulged capacitors on the PSB. Many major electronics companies Philips/Magnavox, Sony, Panasonic, and others were sold capacitors that failed in 2-5 years instead of 10-20. The capacitors fail prematurely due to a lack of preservatives. Unfortunately, they were installed in all sorts of devices and cause a wide range of failure problems.

Here are some options for you.

1. Have it fixed by a professional $$$$$$$??????? (Is it under warranty?)

2. Open your TV and find PSB. (The board that the power cord plugs into) Check for faulty caps. If you find some (bulged or leaking) bad caps replace the entire board. The entire board costs around $250 right now because they are in high demand right now. They can be found at tv-part.com but supplies are limited. I would definitely shop around though.

3. Remove and then replace individual faulty caps. This takes some soldering skill.

Caps are inexpensive and if you can take care of it yourself it will save you hundreds.

I have a tip/tutorial on this site that may also help. It gives step by step instructions for replacing caps on PSB #715t2432-2. If this is your board you are in luck. It's called: Fixing the Philips Turns/shuts off on its own problem. I'm working on uploading pictures to help guide people though the process as well. Let me know if I can do anything to help.

Hope this helps and Good luck.

Kaufman605

Hello,

Your power supply board is not yet dead, u know basic electronics' and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.


I hope this will help in solving the problem.....

It's possibly a backlight or backlight inverter issue. (The backlight itself usually fades or makes the on-screen image change to pink/red.) With a bad backlight, you'll usually see a very dim image if you look at the TV from an inch from the screen. Block the room light from overwhelming this image (sometimes a carefully positioned flashlight will help you see something). If the inverter or video board is bad, you will see nothing. For an out-of-warranty TV, open up the back of the TV and remove the shielding. Look for any scorch marks or bulging or damaged capacitors. (Sometimes other parts will fail on this part but these can be spotted easily. Capacitors look like cylinders on a tripod.) The scorch mark and smoke may indicate a resistor or zener diode that had been used as a fuse and is now gone.

If you borrow (or have a) high-end multimeter (able to measure high frequencies - 50 kHz) or an oscilloscope, hold the multimeter probes a fraction of an inch apart about an inch above the inverter board and power up the TV. If you see a 1 or an actual value, you have a good inverter. If you see a reading near 0, the board is bad or the multimeter can't resolve the frequency.

In either case, you can buy a replacement inverter for $50-150 and just do a simple swap. Disconnect all of the wires (connections are similar to molex and ribbon cables in a computer) and remove board (a few screws usually). Connect the cables to the new inverter. (If you google backlight inverter replacement, you'll find videos and text descriptions.) Note the part number on the board, including the Rev number, and order the exact one (shopjimmy.com or lcdparts.net are good starting points). Universal inverters do exist but can result in reversed controls (up to lower the brightness). Replacing individual parts on the board is cheaper but more prone to not tracking down all of the bad parts.

If the inverter is good, then it's probably backlights themselves (several in most TVs). These are sandwiched on the perimeter of the TV (usually under some tape that holds the lamp, reflector and other parts together. You need to order by length and width and get ones for your TV size. Separate the panel from the bezel. Remove the tape, and separate the reflector (make a note of how things are put together) then you have to Dremel (or use another rotary tool) to remove the plastic to get the backlight out. (They are often molded into the frame.) Then put in the new backlight and reassemble everything. See http://www.lcdparts.net/howto/default.aspx for more information but for an overview: http://www.inventgeek.com/Projects/BacklightFix/overview.aspx Then push the new backlights into place, reconnect the wires and close up the sandwich of tape and other parts around the screen. Then replace it in the bezel.

With a good spare backlight, you can test an inverter for condition (plug together and turn on the tv while the box is open). Similarly a good inverter can test the backlight.

I hope this helps.

Cindy Wells

The backlights inverter circuits are not working, it can also be that it is not getting the voltages from the power supply, etc. Need troubleshooting to narrow down the problem.
then please read on: Please see my basic troubleshooting guide here: http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm Learn about bad caps: 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. Or www.digikey.com just make sure to use caps with low ESR, 105c rating such as PANASONIC FM or FC series. Please post back what you find.

Hi,
Symptom shows tv loses back light that you see as screen dims.
This is problem of power supply board that has back light inverter circuit as well, replace power supply board to solve tv issue.
Required power supply board is available with ShopJimmy.com for $60
Click above link to view board image and price info.
If you are handy with electronics stuff then can replace power supply board by yourself or call local tv repairman to replace it.
Hope these info will help you.
Let me know if you have additional question.
Thanks.

You need to replace backlight inverter.

www.orlandolcd.com

No you need some repair skills to do this better bring it in the service so they can fix it for you if your not sure in your soldering skill you will need soldering iron some caps and a screw driver and lot of nerves to open it :DDD without breaking some thing

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