Question about Samsung HCN4727W 47" Rear Projection Television

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HCN4727 hour glass picture and colors off

I have a hour glass picture and the colors are off i could manually line up the blue but the red does not move at all. Could any one help me please.

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Re: HCN4727 hour glass picture and colors off

All of you are having the same problem with your convergence boards they need to ne replaced. about 250.00 in a shop

Posted on Sep 03, 2008

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I have a HDTV 524159 RCA, it has an hour-glass effect on both directions. On the left side, it hour-glass inward with red and yellow stripes and on right side blue and light blue stripes. It hour-glass...

Hi Sandy, the problem with your TV is called "convergence". It can be a problem with the convergence board or more likely in this model in the power supply or deflection circuits. Unfortunately, troubleshooting by a technician is required.

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Picture goes into an hour glass shape. red/orange color on one edge of the hour glass and green/blue color on the other edge.

You have a bad cap or two in the horizontal deflection [Pincushion problem] and you may have to look for a burned resistor. Use your vision to inspect burned areas on the board, this will most likely tell you where the problem may be. Area should be between the Vertical and Horizontal deflection. Look for the flyback transformer that is the board you are looking for! Hope this will you a good start. Thanks for asking!!

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Seems TV has dry/ cold solder joints (loos connections) in convergence out section.
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The link you posted has been deleted, so I cannot see the picture you posted. If the sides bow in like an hourglass and the red, green and blue colors are still aligned then there is a horizontal width or pincussion problem, but if the sides bow in and the 3 colors have separated and are no longer anywhere near aligned then you have a convergence problem, both of which should be serviced by someone with experience in servicing projection TV's.

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