Metz old TV

[cnR]

Hi. I'd like to ask for some help.. i have old Metz TV which is a bit broken, and i'm looking for datasheet or any electrical scheme to see what can be broken. It doesnt show anything while starting, just makes weird noises, all i can see is black monitor, If anyone has any idea what cna be broken, or has any links where i could find data sheet or schemes, i'd be very, very greatful thanx

[cnR]

oh and ii forgot to say the model is weird, it has one number inside it, and one on the outside part. So the inside one is 7956 and outside one is 7746. By the way which one is correct model number? i think it's the inside one, but i'm not sure.