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Posted on Nov 17, 2007
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Tv no sound no pictures power light blinking

TV worked fine last night- this morning no sound or picture power light blinking. Help

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  • VCSinCAL Feb 01, 2008

    No sound, no picture, power light blinking - and a blue stripe across the middle of the screen. Worked fine last night...

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  • Master 934 Answers
  • Posted on Nov 17, 2007
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Joined: May 22, 2007
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There are a couple of things you could check on this one if you have the equipment and are somewhat skilled in electronics.
Take a test meter if you have one, if not try the local radio shack. Unplug the set and remove the back. Locate F802 a small pico fuse in the SMPS 4a/125v. Test this for open - if open replace it...
Next locate Q472 ( 2SC1740 ) a common NPN amp transistor which will cross to NTE85 in a pinch. This transistor is in the shutdown circuit and if it's failed usually causes the conditions you have there..
Try at least these, and if anything here sounds the slightest complicated take it to a shop - it should be a rather inexpensive repair...
Bill

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