Sears B&W s.s. Schematic Needed

[6GH8cowboy]

I have a sears solid-state black and white 7 inch TV which is part of a radio display at our local fair. The sound is very very faint.

Schematic is needed for a sears 562-50200100 I'm sure it was manufactured by Toshiba.

I would like to get it going for the display it has a very good picture and we're demonstrating it with a digital converter box. ( There is no static between channels so I'm sure the converter box is fine, it's the TV where the issue lies)

Thanks in advance for any help.