Thanks for the replies guys , ive done the smc reset , also the efi and smc firmware appears to be correct versions ,

What kind of battery is inside the blue plastic of the PRAM battery can one be soldered in as i can only find a used one on ebay ,.

I cant believe the local apple repair center class this as "vintage" and won't repair it !! .

I will have a look at the LVDS connecter tonight when there are less little inquisitive fingers around !! , I have a usb microscope somewhere i will try and dig it out and have a good look .

I presume its a case of changing different parts until i find the culprit ?

It did have a new mainboard under the invidia chip problem , in 2011 i think it was ..

thanks for your help ..