Tv goes pink....

Question

i have a 3 year old sony trinitron kv-27hs420. when you turn it on it stays on for a couple seconds then the screen goes pink and it turns off. and the light blinks 7 times. i found out that the light blinking means...Seven blinks - High voltage shutdown. The high voltagehas exceeded 33k and the unit goes immediately into safety shutdown.Check power supply regulation and horizontal circuits.i also got the diagnostics screen to come up for a few seconds and these are the three codes that came up. akblow-b h-stop my questions are 1:) can i make the repairs myself, i have done many repairs on alot of different electronics. but i am a little afraid to work on tv's because of the high voltage. 2:) where is a good repair shop in the dfw area that wont charge an arm and a leg to fix it?Thanks, John