Have you emailed or called Onkyo? From their website:
Who can I contact with questions about my Onkyo product?
Please contact our Corporate Headquarters at:
Onkyo USA Corporation
18 Park Way
Upper Saddle River, New Jersey 07458
Tel: 201-785-2600
Fax: 201-785-2650
You could also fill out their feedback form by clicking
here. You can also contact the TV manf. and ask them if they know. Also remotecentral.com is a good site for remote questions. Good luck to you.