The Techassist board (still running?) had lots of great info on these in their heyday.
http://www.freelists.org/post/techas...hassis-L011U,2
Yes, the 47uf cap WILL fix most sets. It's a MUST replace part, unless it's been replaced before.
We used to scope the horiz drive, verify the bad cap, and let the sets run for the rest of the day, sit idle overnite and see if they'd start up in the morning from cold. If so, the set was considered fixed.
Lightning/surge ops usually killed the HOTs and regulators. Seems yours are ok.
Cheers,