Picture blanks out when changing channels from direct tv input

on your remote control there is input button. Press that to the tv level.
There are other settings for box tops etc

Your Direct TV box is switching between a Standard Definition channel and a High Definition channel. When this happens, the TV has to switch the display format. As the format is changing, you will briefly loss picture, the TV detects the new format, and then displays it. What you are seeing is the normal operation of the TV. It the TV did not blank the picture, you would see a broken chopped up picture during the transition. If you are familiar with the setup menu of the Direct TV box, you could change the video format settings so than it locks to the High Definition format. If you are not familiar with the Setup menu, you should contact Direct TV and ask then to walk you though this procedure. Specifically, ask them to "Help me set my Direct TV box so that it always displays in 1080i format." You pay for them for the service, they should be able to provide you with some phone support at no charge. I hope this was helpful, best wishes.

When you switched from cable to Direct TV you went from a direct connection to having a box in the middle. The box is required to to decode the signal. There is nothing wrong with the tv, you just may not have the best signal.

1. By View your DVR, Do you mean you can actually see a picture?
2. By "Switch Channels", are these channels being tuned by the TV Tuner?

Your LCD Panel is OK Since you have a Picture (input display in right corner)
If you can see a picture with your DVR, VCR, DVD or any external source then your TVs Video Processing is OK....if not you will probably need to replace the responsible PWB for this function
If you can see a picture with the external sources and only the TV's Tuner is not showing Video, The PWB responsible for Tuning within the TV should be replaced.

Also, if all problems are associated with only the DVR (I assume this is Sat or Cable), then it is most likely that this device is not functioning properly. Possibly lost signal or deauthorized.

it wont be on a chanel, you will need to find the input button on your remote, and change the input that coinsides to the plugs your pluged into on your tv, just change your input untill you see a picture, then remember what one it is

cannot change stations, volume or input methods

it is likely that your tv is interpreting a random button on your remote as a signal sent for it to change inputs, next time this happens turn the tv off and back on and note what comes up on the screen, for example video 1,

It is hooked up to Direct TV. When I change the channel on the TV to another input it looks fine but without a picture. as you do not see tint in another channel means your color section is ok it is due to video or luminance section.

Usually the blue screen is an indication that the video signal to the TV is not present. Most of the new TV's have a video input selection button on the TV and on the remote; try changing the video input selection.

On a Panasonic to do a factory reset while the set is on press in on the power and action buttons on the front of the TV at the same time. In a few seconds the screen shouls go blank and come up with a screen that says "CHK" in the upper left hand corner. Once it does that press the action button again to clear the screen. You have now reset the TV to factory settings and will have to re-program the channel memory once again. Hope that works...