NEC PX-50MX1A - no video but backlight and audio work

[btank]

hi. tv began having problems where i would turn on unit and get no picture..turn oiff/.on/off/on would get picture but started getting worse...eventually discovered warming unit up for about 20 min would get picture but eventually video failed completely..so now i have no video but backlight and audio works fine...please advise

thanks

[minnie]

Sounds like the Y sustain board...