Question about Polaroid Televison & Video

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I have a flat screen polaroid TV. It turns on but doesn't stay on and just shuts off. We have tried unplugging it and changing out batteries in the remote. What could be wrong?

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  • Expert
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Most likely cause is capacitors in the power supply. They can usually be spotted as the tops will have swollen and sometimes ruptured.

Posted on Jul 29, 2010

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Check the power supply module and the backlight inverter board.
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

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

Please post back what you find

Posted on Jul 30, 2010

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  • Polaroid Master
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Tv turn on have flashes of pictures few sec.than just dies,sound left only?Yes.Than the 2 or 1 long LCD inverter boards are dead.These long 1or 2 LCD inverter boards it job to help the LCD screen to have a backlight to produced a picture.Or Tv power LED light indication don't stay on,just dies?Than the power supply board have problems,that the board,where the power a/c cord plug into,that the power supply board.Tries websites like Shopjimmy.com,Ebay.com to buy those refurbies boards for the replacement.Those 1 or 2 long LCD inverter boards or the power supply board.

Posted on Jul 29, 2010

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Posted on Jan 02, 2017

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Fml 373b Polaroid ,no screen no sound . When I push the power button the light changes from red to blue . I unplugged and plugged about a week ago and when It wanted it sounded like a static noise and the...


You may have dying power supply problem, that will be the first palce to inspect, look foe any bad caps with domed tops, any burnt components and connections.
Service manuals: http://www.polaroidsupport.com

Please read my guide to get more understanding.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: 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, high ripple current and long life rating such as PANASONIC FM or FC series.

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You need to open it up and checking the voltages in the power supply sections, you should have 5v (for logic circuits), 12v for sound, 24v for backlight inverter circuits. Look for bad caps with bulging tops in power supply also.

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The solution at this point would be to get the power supply repair since new boards are not longer being manufactured. In about 95% of the time if the LCD doesn't power up or turns OFF by itself or need to be unplug for some time to make work again; those are the symptoms of a dying or defective power supply.
If your TV is less then a year old, still under manufacturers warranty.
I service these power supplies, for more info write to jah2mil@hotmail.com

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