Google Groups at sci.electronics.repair for "toshiba vertical" should
give you all the information. Many different models had the same
problems with capacitors.
Once you find the vertical output ic, the capacitors with the same
numbers C308,c301, etc.

Realize you won't be able to hit Radio Shack for suitable replacement
parts as they need to be high temperature and preferably low esr, high
precision capacitors. In that circuit if the small one 1uF or 2.2uf
change value with temperature, you will definitely see a change in
vertical size and linearity as the tv warms up.

As long as the capacitors have not damaged the vertical ic (some
deflection is still present to mostly full screen) then the capacitors
should be the full fix.

While you are in the tv there are some power supply capacitors that
often go bad soon after the vertical ones. Google for Toshiba power
supply capacitors. I think some of the locations were
c840,c822,c841,c863 etc. Exact locations can vary by model a bit.