Does anyone know about televisions?

I HAVE A SONY KV20TS20 TELEVISION THAT I'M TRYING TO FIX. I HAVE THE SERVICE MANUAL FOR IT, BUT IT IS STILL TOO DIFFICULT TO FIX BECAUSE I DON'T HAVE THAT MUCH EXPERIENCE WITH TVs. THE TELEVISION HAS BAD COLOR. IT'S LIKE A BIG GREEN MARK IN THE MIDDLE OF THE SCREEN. IT LOOKS LIKE GREEN WANTS TO TAKE OVER THE WHOLE PICTURE. ITS A BIG SCREEN CIRCLE , IT SHOWS TV LIKE NORMAL, EVERYTHING IS CLEAR, BUT THERE'S THIS BIG GREEN CIRCLE IN THE MIDDLE. IT'S ALMOST NORMAL COLOR AROUND THE CIRCLE THOUGH. I'M SURE ITS JUST A SIMPLE PROBLEM, BUT I DON'T KNOW WHAT IT IS. CAN ANYONE HELP ME?

Answer:
It may just need degaussing. Try turning it on and off quickly about 15-20 times. This has a degaussing effect. You can also try unplugging it for 20 minutes. I have seen this work wonders. Otherwise, take it to an authorized repair center. They are the only ones who have access to the parts that may be needed.
i dunno
A big green circle? Sounds like it might be the shadow mask. Be carefull, because if the shadow mask comes completely loose it can brake tube, causin it to explode.
DID YOU LOOSEN THOSE SCREWS HOLDING THOSE HEAVY >>THINGYS<< mounted on the back of the PICTURE TUBE??

WELL?? Did you?

It's called a Deflection Yoke.you loosened it up and lost the alignment from the Factory...

Well..all you can do now is to unplug the tv, loosen the screws again, and push the yoke towards the front of the TV to RESEAT it.After that you can fire up the TV and get MSNBC on and use the scrolling at the bottom to adjust the YOKE TILT.You rotate it like you rotate a door knob to adjust TILT..

IN AND OUT is what caused that Green BLOB in the middle..PUSH in...Green Blob disappears.
PULL out..Green blob reappears..
PUSH IN...Make green blob disappear.
Great answer Reggieman ! Cheers Pete !.
Greg you bring the trade into disrepute with stupid answers like that , ( explode ) not even implode !

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