HTR391 2 of the 4 HDMI in not working

HDMI in 1 and 2 don't work. 3 and 4 work fine. I have swapped cables and input sources. Is there something I am missing?

In regards to your issue- it would possibly be more effective to contact our Product Support Dept for further assistance with this specific issue via our phone number and hours of operation below. We would like to speak with you and work to troubleshoot and resolve your issue, with you having access to your unit, as prompt as possible. Please contact our Product Support Dept for further assistance with this specific issue via our phone number and hours of operation (Monday- Sunday 24 hours a day: (800) 229-1687; option #3 PRODUCT SUPPORT). We would like to speak with you and work to troubleshoot and resolve your issue as prompt as possible.

Thank You;

Forum Moderator