I have a Henlong Tiger 1 tank, I haven’t used it much but took it camping, I drove it around a little but it seemed on then off.when I got home I noticed the battery box on the transmitter had three broken springs. I soldered them and go the red light to come on. But the tank won’t run. Needing suggestions , thanks

Check the tank's battery. Make sure all the batteries (tank and transmitter) are fully charged.
If the springs in the transmitter were broken it might mean that the transmitter was dropped or had some physical damage. Can you borrow a transmitter from a friend, switch your crystal and see if it works?

whoops...wrong post

Sounds like a battery issue. Do you have one of those yellow nicad batteries, the one that came with the tank? Those don't last forever, and eventually they'll quit taking a charge. If you have any way to put in a battery that you know is good and try it with that, that would be my first suggestion.

Checking all connections I did find the black wire was loose on the battery box, will solder and report

Thanks to all who commented, I charged the batteries, soldered the wire the still nothing. So I reversed the freq. pin under the battery and she runs! and shoots very happy

Glad you got it running. The crystal can go in either way so it sounds like you had a bad connection there. When you pulled it out and then reinserted it you probably reestablish the connection. But once again, glad you got it running.