Picture blinks on an off an has no sound how can this be fixed

These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
http://electro-medical.blogspot.com/

how to repair lcd backlight YouTube

In this case, it will be best to contact any service technician. These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit stage inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power led, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. Viewing it in "Mosaic" will make surf easy.
http://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given. Surf the site with patience.

If there is sound, and no picture, the front LED might be blinking for a certain fixed numbers at one time. Count these numbers. The number is more important because it is fault indication, called LED blinking codes. Check this link for more details about Panasonic blinking codes.

GO SETTING TAB AND FIND OPTION SET DEFAULT MANUFACTURING SETTING AND TRY

Sounds like it is flashing probably 5 times?
The green tinge is the tube wearing. A new tube will fix it.

does the tv make noise or have any picture

This should be a quick fix. Try resoldering the vertical IC. This is a small flat IC attached to a heat sink with about 11 pins. It should be marked LA7837 or something similar. That should resolve the problem.

Keep us posted.
Dan

Plug the electricity to a surge protector. I fixed my that way. Try it and let us know.

Sony has a code for those blinks indicating the problem area. Count the blonks till the pause then google Sony blink codes for the area to fix.