When you select the input you can see the vid=E9o for about 1 sec and it look fine then the unusable signal come in. The video signal is ok at pin 15 of ic U13101(uP) horizontal and vertical sync are present and normal at pin 34 and 35, all vcc look ok. The video from the tuner is ok but sometimes when the menu is display you can see the video signal true it (flash). I have replace the uP but no change.
Any help is welcome.