Television and Home Theater

I have 3 PHILIPS 42PF5520D plasma teles with all same fault, wondering if anyone can help because im pulling my hair out, tv will switch on, green led steady, PDP strikes, lights and stays lit, with a flash of a full colour picture for less than a second, screen goes blank. But PDP is still being driven as can see its lit, all power supply voltages present, as are X and Y voltages all present, think its logic display board but need confirmation, anyone any experiance of this fault.
THANKS FOR LOOKING,

Mike

  RCA Model 20F511T Tru-Flat TV (service code=20F11T-CX61) Lost all color. Perfect B/W picture on all inputs with known good source. color is bright and even with the menues and on-screen info. color level is turned up and all other settings are within normal range. typical story..was working fine and next day,no color. no surges or other power issues that I know of.  set bought 8-23-05. only lightly used (guest room).   any Ideas?  Thanks!

I have a Samsung HP-T4254 (42" Plazma) It was great until it started clicking while on one day and then shutting down... Now it just clicks when pluged in and does not come on any longer. does any one have an idea of what the problem is and if not can you send me to a company who can fix the problem or sell me the part needed (fingers crossed that it is something simple like changing out a plug and play card)