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DLP HL-R5067W TV picture freezes, sometimes sound continues, then everything goes black, then seconds later TV powers up. This continually happens about every 60 seconds. After unpluging power cord allowing TV to sit for 5 minutes, repluging, TV might run with no problems for several hours. White the TV is in the freeze mode, the on/off controller will not operate the TV. Every time on/off button is pushed, the timer signal displays on the left side of the manual on/off switch. Also when the TV will not stay on at times a green screen with six black bars (one inch wide, running from top to bottom) displays. Other times the screen is small green lines with small black cubes (5) displayed top and bottom of screen. When the TV does power up after a restart top left screen shows (component 1), until TV is fully fired up. Then if it goes out immediately the component does not show and the TV will continue to cycle on off. Exact same problem except for the colored lines when the screen goes blank. For a few days pulling the power cord when the TV was turned off apparently let the set 'reboot' and it would then work fine until the next time the set was turned off/then on. Recently, this maneuver no longer works.

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I don't have the service manuals or any technical data for this set. I will tell you genericaly what I believe is the cause.

The set re-processes the video signal for the display. There is some memory and address decoding and X-Y matrixing involved. In this process, something is loosing data or clocking pulses for the processing. A bad power supply can also cause this type of failure.

When there is data loss you can have black squares or cubes because there is new data coming in and the old has not finished process. The image content that should not be present is refered to as aliasing. The actual detailed process of what goes on in your type of set is fairly complex.

The first step that I would try is the signal processor board and the power supply.

You will have to send the set for service. I hope you have an extended warranty for this set.


Jerry G.

Posted on Apr 13, 2008

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Hi,

The best and the only solution to fix this problem is to call a tech and get it serviced or if it is still under warranty just get it replaced.

Few troubleshooting steps you can try:

1)Do a hard reset by unpluging all the cords for 4hrs and then plug it back.
2)The whacking test is to just bang or smack the set with your hand on the back, side, top, etc., to see if there are loose connections or cold solder joints inside that are acting up. If so, the banging should knock them back to normal and the set should restore. You might have to use some creative banging and some have had to put a book or magazine under one corner to torque the chassis enough to get it to work reliably.

Goodluck,
Please don't forget to rate the solution

Posted on Apr 13, 2008

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