[morzh]

I suggest using many, many articles here on how to start restoring a radio.

I will repeat myself, but:

1. Powering on a radio without a recap (weeding out old tubular paper caps and electrolytic caps) - big no-no-no.
2. Check the tubes.
3. Then proceed with power-up.

(you have more or less checked the power transformer, though this should be done differently).

PS. 80 jr is not the best radio to learn restoration. It is a superhet-regen, and as such will be finicky to align.
PPS. If your meter shows the wrong poilarity...well, make sure yer red wire goes to V input and yer black one to "Common".