Adolfo Tristany 2

I own a HITECH OPTIC 6  Channel 35 Mhz Transmitter. Changing the battery I made mistake and now the Transmitter does not work well.  It emits but it gives not the signal to command the servos. Connected to a plane simulator  works very well.I ask if you know if this transmitter has a fuse or what component is necessary to change to fix it.Thanks very much for your attention. Yours sincerely    Adolfo Tristany