Four digit Toshiba chassii start with year of design then
a number. There is probably a close sams but without a collection
its not an option. Most Tosh sets will be close for a few year
period. We would often use a similar sets manual. If you get one with
the same jungle IC they are very close
For now I would look at both main boards in the power supply jungle IC, the horz drive, output and under the FBT. Also see if the audio outputs
are getting hot.
73 Zeno
LFOD !