You probably have affected something when you "turned the amp over" dropped it. These circuit boards are not solid state and are very fragile!
I would suggest you start again replacing tubes, and find out if you have another bad tube. I would start from the last one you replaced and work backwards from there. These are very dangerous and can be lethal, so be very careful when your hands are inside the case! They may have some sort of old capacitor that will store enough power to burn you real bad, or stop your heart when it is unplugged! Be very careful where you put your hands!
Once you get it going again Don't Move It! What ever is loose in there when moved with probably blow again. Your amps traveling days are over, until you can afford a newer amp or have that one repaired.
I would suggest if you are going to be moving your amp around invest in a newer solid circuit board type Amp. The average Joe, where ever you are playing, is not going be sober enough or care that the sound coming from your amp is "pure". Keep it at home for your own enjoyment.