range problem

[gixxer]

Right I have a RC8 that's I converted to brushless all has been working fine until I had a crash, and now the range is down to about 10 meters! I have replaced the rx and the rx crystal as I thought they may have been damaged in the crash but I still have the same problem as with the old rx and crystal I'm at a loss now as I've even changed the transmitter just to rule everything out any suggestions welcomed!!!

Cheers john