[morzh]

First things first.

Try to locate (maybe Ron can give you a/the link) numerous discussion that tell you what to do to a newly acquired old radio that either has not been restored or the restoration is being questioned.

Basically, you do not power the radio until:

1. You verified that the caps (all of them preferably but as a minimum all electrolytics) have been replaced.
2. You check everything for shorts.
3. You inspected your power cord and replaced it if necessary.
4. You checked your transformer output using a Variac.
5. You checked your tubes.
6. You checked your rectifier output.

Then you can bring it up using a Variac, measure the voltages...etc.