Hung, check for a capristor between the rf connector and the tuner, usually located inside a small metal box called the " antenna isolator" I have had them go bad from lightning strikes and they will shut down the set when you try to screw on the rf cable, just a shot in the dark, hope it helps, Larry E. American TV & Electronics Sunny Florida Hung Nguyen wrote: >Hello Techs, >Have a TV Panasonic,Model CT-20G6DE,Chassis #DP359 in shop. >Unit shut down after on for 5-10min.if hooking up to cable or video signal >from a VCR. >if nothing connecting to TV. It is not shut down.Need help!!!!! >Any suggestions is appreciated >Thanks, >Hung >Kimsonics > >------------------------------------------ >To REMOVE your email address, click here: > http://www.tech-assist.org/unsubb.html >------------------------------------------ >***NEW*** Tips Added Instantly!!!*** >Submit Repair Tips here: >http://www.tech-assist.org/secure/tip/ > > ------------------------------------------ To REMOVE your email address, click here: http://www.tech-assist.org/unsubb.html ------------------------------------------ ***NEW*** Tips Added Instantly!!!*** Submit Repair Tips here: http://www.tech-assist.org/secure/tip/