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HP 42" Plasma HDTV PL4260N power turns on/off but processor will not load. No picture, no sound. Unit did make a snap noise at the same time the picture went out.

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  • hanlonbizz Dec 10, 2008

    What I'm looking for is a site that can point to a source that can supply or give instruction on replacing the main processor board of this TV.

  • capesquan7 Mar 19, 2009

    I was watching a movie and the TV screen just went blank. I unpluged it for a day and tried, but to no avail. the power button still changes from red to blue, but the screen is totally dead.

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4 Answers

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  • Master
  • 1,139 Answers

Hello,

I believe that snap sound was one of you capacitors blowing up. If you can take the back off do so and examine the circuit boards for the damaged capacitor. If you can replace it do so. If not get a qualified TV technician to look at the set and develop an estimate for the cost of repair.

I hope this helps,

Thank you,

Shuttle83

http://www.electron-age-technologies-llc.com

Posted on Dec 10, 2008

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  • Master
  • 837 Answers

You need to replace the YSUS board

Posted on Dec 10, 2008

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  • Master
  • 2,035 Answers

You can try a hard reset: Unplug TV from AC mains and remove all cables from TV. Wait about 30 minutes and replug to AC mains and redo the cabling. Switch on the TV and see if it works..Even this fails then its on board capacitor burned in the tv .you need to replaced the capacitor ....in the tv...

Good luck..

Posted on Dec 03, 2008

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  • Master
  • 1,269 Answers

Try to unplug the power of the unit for few hours. That will reset it. If the same problem still persists, you definitely need to open the TV casing to visually check defect electronic parts like fuse and the power supply board. If you believe that you cannot perform these steps, it's better to consult a pro TV technician or bring it to the nearest electronic service center.

Posted on Dec 03, 2008

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1 Answer

Picture just went out on my tv but I still have sound


I have the same problem with my HP PL4260N 42" Plasma HDTV serial # CNH6141988, model # CPTOH-0602. I have perfect sound and can change channels still with sound but NO PICTURE. I am a consumer with a question that need the advise of an expert.

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Here's what you need:

(sorry, no point in copying it, so referring to it instead):

http://blog.coppelltvrepair.com/2011/02/hp-pl4260n-suddenly-lost-picture-how-to.html

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