HELP NEEDED

[zafeer]

IF ANYBODY KNOW THE SOLUTION PLEASE LET ME KNOW.

I HAVE MAGNUM MR9900HD RECEIVER WITH GSHARE.
NOW ONLY VERTICAL CHANNELS ARE WORKING IF I PUT ONLY ONE LNB CONNECTION DIRECT TO RECEIVER.
IF PUT DISEQC SWITCH THERE IS NO SIGNAL IN THE RECEIVER. I HAD CHANGED DISEQC SWITCH BUT SAME PROBLEM.
ONE MECHNIC TOLD ME THAT IC OF LNB SWITCH HAS PROBLEM.
I SENT RECEIVER IN THE COMPANY BUT THEY INFORMED THAT THEY DON'T HAVE IC.
THIS RECEIVER HAS VERY SMALL IC.
THIS RECEIVER AND STARSAT 1000 HD IS SAME.
KINDLY CHECK THE PICTURE AND IF SOMEONE CAN HELP ME.