This sounds like one of the 9 volt regulators on the small signal board is going bad, supplying less than 8 volts. I have seen this is several of those sets. The IC needs to be replaced and if you do not have experience in servicing projection TV's then I suggest letting a qualified tech handle it for you.
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The picture is flipped left-to-right or is upside-down or both. This cannot happen as a result of a failure. For a CRT-based TV or monitor, it almost certainly means that the wires to the horizontal or vertical deflection yoke have been swapped to enable the picture to appear correct when viewed via a mirror (horizontal only) or if the unit were mounted base-up to a ceiling (both). The remedy is simply to swap the two wires to the relevant deflection yoke(s). There may even be obvious splices to guide you. There is usually a connector with 4 relatively fat wires that go to the deflection yoke on the CRT neck (NOT the PCB attached to the tube base). If you don't have a schematic, trace these on the main PCB back to their origin. The horizontal will originate somewhere in the vicinity of the flyback transformer. It may be possible to disengage the wires from the connector shell and swap them there. If not, cut, splice, and solder. Adjustment of the appropriate centering controls may be needed.
For flat panel displays, it is even more unlikely this would happen as a result of a hardware failure. Most likely, there is a mode setting in the one of the setup menus for the TV or monitor itself. It could also be in the receiver for the TV, or the driver or application software of the PC. If the source is a video projector, the menu setting is likely there, to select between front and rear projection (horizontal) or table or ceiling mount (both). So, don't bother to open up the flat panel TV or monitor. The problem is not there! :)
My Mitsubishi Model VS-60705 did the same thing a couple of years ago...A TV repair facility replaced the Video card. Any repair facility facility that works on rear-projection TV's should be able to repair your set.
1. HORIZONTAL PULLING AND TEARING, MAY ALSO HAVE VERTICAL ROLLING OR VERTICAL BLANKING BAR LOCKING IN THE MIDDLE OF THE PICTURE. CHECK C2C52 10 UFD @ 50 V OFF THE BASE OF Q2C51 ON THE SIGNAL PCB. 2. CHECK C2P05 100 UFD 16 V OFF PIN 3 OF IC2P01 (9-VOLT REGULATOR) ON THE SIGNAL PCB