Question about Samsung HCN4226W 42" Rear Projection HDTV-Ready Television

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Samsung tv wont turn on

Red light blinks sound but wont stay on and no picture

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  • snuggles2010 Dec 28, 2007

    could this be a switch

  • diesel69 Dec 29, 2007

    i have the same problem...it worked fine last night then this morning it wouldn't turn on.

    Just the red ring around the power button is flashing when i try to turn the power on...and no sound.

  • Anonymous Jan 11, 2008

    i to have the same issue. It was fine last night. today turned it on and the light on the power button is red no sound no picture

  • sweski Jan 12, 2008

    Add me to this list. Did Samsung put some date sensitive component in the power supply or what ? I pulled the main board out of it and located the

    STR-X6545 regulator that can cause this problem, according to another post by a Tech. In the process of ordering it and getting a manual. I noticed an anomaly in the audio on this set a couple times a day or so before this went. It sounded like a video signal or a data stream was getting into the audio. Dont know if this was DTV, my HD receiver or a warning of what was to come....

  • MSILLS Jan 13, 2008

    Same problem here, it first started last week, the picture and sound just went off suddenly and the red indicator light began to blink. I would have to uplug the set and plug back in to turn it back on, but it would only stay on for a few minutes then off again. If we left it unplugged for a day or two, it would come back on and play for a couple of hours, then same problem. I can not get it to come on now. I just tried to plug it back in a turn it on after a day of sitting, the door was open and so I pushed the close button. When it was plugged in, the red light came on (steady not blinking) and the door begin to close a bit then stopped. I had unplug and plug the set in several times in order to get the door to close completely. There was never a picture or sound, though I could clearly hear the set click on and off. Could this be a circuit problem?

    We bought our set in 2002, it seems in looking at this and other websites, this is when the problems start. If anybodt has had this happen and been able to fix their set, please let us know how you did it, or if you had to call a repairman.

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I had a similar problem and turned out to be the convergence board. Here is the part # and where I got it from. http://www.partstore.com/Part/Samsung/Samsung/BP9500142E/New.aspx

Posted on Jan 21, 2008

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I got a manual for this set, pulled the power supply board to find the STK-X6545 regulator. After reading another post - to look for the -20 DC on the convergence board, reinstalled the power supply, and pulled the 20 volt supply off of the convergence board. It then came on, without convergence of course. So I got brave and reconnected the convergence - and now FM ! the set is working. I hate when this happens. I do notice that the convergence IC'c run very hot. I have a feeling this is going to go out again, and I will replace the convergence board if it does. Thanks for your suggestions. Samsung must have changed the part number several times on this part, as I cannot cross reference the number that is currently installed. I must assume that the Parts Depot number is a direct replacement ? Thanks !

Posted on Jan 21, 2008

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