The picture is blue how do u reset convergence?
That isn't convergence that does that. There are "screen" trimmers, if someone has messed them up you can get all one color, but the usual cause is the picture tube going bad. The screen trimmers are on the PC board on the gun (narrow) end of the CRT. Some trimmers are color drive and others are color black level, or "screen". Don't adjust the color drives, it is a delicate balancing act to get them right. Find the one labelled blue and turn it down. If all you can get is too dark, turn the red and green up, just enough to see a dim color haze in a blank picture. Balance them out so the haze is gray. Then turn them all down just a hair so the screen is just black. Then try a picture. If you can't get gray on a blank screen then go to the high voltage transformer (the one that can kill you if you touch the wrong part) and adjust the "screen" control on its side up (it adjusts all the colors together). If you still can't get gray, one or more of the color guns is weak, and you may as well chuck it.
Of course it could also be a bad blue drive transistor, but fixing that takes more expertise than you can get from a forum.
Actually, just getting the TV open and propped up so it doesn't fall over is a job in itself...
Blue should converge on top of "yellow".Bad connection(s)
on blue convergence IC.Replace both IC's for durable repair.
Check pico fuses.Reset convergence alignment.
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