HP-R5072 50 in. HDTV Plasma Television: i have one red dot on plasma screen. it is always ...

It might be repairable, but the repair will likely cost you triple what a new TV will cost.

I can tell you that I had my plasma screen replaced in the 4th year. The tech told me that the replacement panel was much more reliable. You may be looking at replacing the plasma panel...(which may be more expensive than replacing the whole unit??).

I could be the bulb, but I would put money on the power supply being faulty. It is a common issue with the Samsung plasma's.

Vertical lines on the screen is almost always a drive board. This is part of the plasma panel. I don't think you will want it repaired.

Most likely it sounds like a Logic Board problem. The Logic Board is what controls images on the screen. It's a somewhat expensive part to replace. Maybe in the $200 range. Being that the part isn't cheap, best to have a TV tech come to your house to take a look at the TV to confirm the diagnoses before buying the replacement part.

Panel is bad. Contact Samsung to see if they will replace the panel.

If this is a new set, return it for exchange. This is a warranty repair item.
Dan

from the model number you have a 42" set,,the v_set and v_scan voltages need to be set 15vdc lower..this should take care of it,,if not then the plasma panel is bad

You can get rid of the red dots by adjusting the V-scan voltage down, it's on the panel sticker inside the unit, you can find the test point on the DC to DC pcb, and the adjustment pot is on the same board, lower it as you watch the screen and only lower it enough to rid the screen of the dots

Did you get this problem resoslved? I had the same issue a few months ago. I tech came by and took my TV to the shop, a few days later he said it was fixed as they needed to make some adjustments.....The TV has been fine up until a week or so ago and now the red dots have appeared again. Was wondering what happened to yours.