My Hitec Flash 7 drains the battery when off
 

Hi:
A couple of days ago there was a short (my fault) in the battery tray connector and a smell of burnt.
Now I noticed that it takes longer to charge the NimH batts from the charge port (I connect a constant current source to the tx as with my other radios). I did around 10 flights with no problems but the tx 4-batt pack was almost at 4v after the flights.
Once at home I tested for any current drain while the tx is off and it measures around 150mA.
Is it possible that a wire melted and now there is a new path for the current?
Thanks