Hi Friends
Had a Amstrad digibox, quite old, breakdown. A friend lent me a Pace box untill I bought a new one. I connected every thing up and all is fine untill 25/30 mins when vertical lines appear and block the picture. Put on  standby for 2mins and then re-power and all is OK.  Tried different digibox (amstrad newer model than my old one) and exactly the same result happens. It only happens when I first turn the TV on and after exactly 25/30mins every time. I have changed the card and have tried without the card. The TV is fine when playing a DVD. Any help or clues would be extremely appreciated. Thanks for time and patience