[Ron Ramirez]

My repairman says he only replaces caps and resistors that are bad and leaves the rest

There's your first problem. If some of the paper caps were not replaced, they need to be. All of the electrolytics should have been automatically replaced.

But you say it has "no power" now? You mean total silence, tubes do not light up, pilot lamps on dial do not light up?

Did that repairman install a fuse? If so, it could have blown. The only other thing I can think of, if it is truly totally dead, is the power switch has stopped working. Or, a poor connection for the power cord was made under the chassis. In the case of the latter, this could be a very serious (and potentially lethal) problem.