Samsung plasma when we first turn on the tv the screen is green. the color turns back after about 40 secs to a minute. why?

your Samsung TV is experiencing issues such as sound but no picture, you can reset it by unplugging it and holding the power button for 30 seconds. If you're having issues turning your TV on, you may need to unplug it for 30 seconds and plug it directly into an outlet that you know works properly. You can also try pressing and holding the power button on your remote until the TV turns off and on again. If the issue persists, please contact Samsung Support for further assistance. REFERENCES:
https://www.samsung.com/ca/support/model/HPS4253X/XAC/

If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Line faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.

go into tools on your remote

replaced main board
Manufacturer Samsung Part Number BP94-02065A Description ASSY PCB MISC-DIGITA

1.T-con board or related cables problem -- 60%
2.replace Main Board -- 40%

your vs and va need to be adjusted on power supply i can walk you through it but requirs volt meter and taking the back panel off tv

my screen is yellow

have 42in Magnavox plasma just over 1 yr old picture freezes
for about a minute still have sound then flashes off then comes back on does this about every ten minutes after the tv is on for
a while used to take hours before problem occured has always
done this

I have samsung 40" LCD tv and it's happening the same thing. I turned it on and it last for 5 minutes and the screen went back but the audio is fine. I turned off and turned it back on it worked fine but an hour later it happen again.

Is this on all inputs or is this through a HDMI connection?