I am hoping somebody can give me some advice on what might be causing the issuing I am experiencing or point me in the right direction.

I have a TSU9600 linked to a RFX9600 which until a couple of week ago controlled everything in my system via IR with no issues.

I then decided to control the Lumgen Mini3D video processor via serial to free, I have the codes programmed and connected via the standard serial cable that came with the Lumagen. Bingo the RFX9600 controls the Lumagen is seems faster than when controlling with IR.

However, the RFX9600 then stops sending any IR commands to any other devices. The RFX9600 lights up to say it is sending the commands, but they are not reaching the other devices. If I disconnect the Serial cable, it all works fine.

I have tried a new Serial cable which is wired Straight Through and all of the serial ports but get the same issue.

Anyone any ideas on this?