Thanks Nino but I tried that 1st, i.e removed all the plugs one by one while looking at the display to see if the fault was there inc. the ribbon cable both ends. Didn't have my glasses on at the time so I couldn't see if it had any dicky terminals-corrosion etc.. Next thought???. Just went out and fired it up after being switched off fo 2 hrs and Top line is almost!!! ok but the bottom line is 25% at best