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Sanyo dp42647 42" lcd - no picture - sound ok

Tested display by placing a flashlight against screen- display is ok- backlight is not working- checked fuses on backlight board- fuse to control circut was blown- this is a smaller black 2 amp surface mount fuse, not one of the 2 large 8 amp ones. tested circut, pulling less than .5 amp- Tv works fine now. Good luck--

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5 Suggested Answers

Shuttle83
  • 1139 Answers

SOURCE: HPT-4250

I think what has happened is that your power supply malfunctioned and what has happened is that a capacitor has blown up. I would suggest that you do a complete search of the power supply to determine the location of the blown capacitor, I would advise getting a schematic to aid you in this. If you don't have experience in electronics I would also advise taking the set to the shop or calling a repairman to take care of this issue.

Posted on Sep 20, 2007

  • 71 Answers

SOURCE: DP42647 UPGRADE?

no u cannot.

Posted on Mar 05, 2009

  • 2 Answers

SOURCE: LTV-30w2 Backlight problem...goes black

turn light in room off, take a strong flashlight and shine at an angle and see if you can see picture.If you see picture then it is inverter problem.part number 4900506280,I think.

Posted on Mar 05, 2009

  • 135 Answers

SOURCE: screen went black on my 42" sanyo model dp42647 lcd

Hi there! The panel may be in protection mode. The Inverter board is the most logical area to start after checking power supply Voltages.(5,6,24 and 13Volts). There may be coils on the Inverter Board which have bad soldering or faulty. Other than this it may be main board which controls switch on or off. If all else fails, refer to a repairer. Beware of High Current!!! Best Wishes and Good Luck, Jus004

Posted on Aug 23, 2009

  • 8457 Answers

SOURCE: Sanyo lcd tv blinking

Power supply board is dead.Replaced the power supply board will solved this problems.Tries Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.

Posted on Apr 02, 2010

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Place a bright flashlight against the screen. Look around the edges of the flashlight on the screen and see if you can see an image moving. This indicate the inverter/backlight has failed.
IF you know how to work on electronics or have someone with knowledge/skill you can repair/replace it.
Unplug set.
Lay on flat surface covered with a cloth.
Remove back cover.
First check to make sure the voltage is getting to the inverter board.
If the voltage is present, replace the inverter board. If not check fuse on power supply board.

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48.v1448.021.jpg

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1 Answer

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1 Answer

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To determine if you have a LCD screen or video card problem, read this and follow the instructions.

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1 Answer

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