Facing TV Problems? Ask a TV Technician.
Hi and welcome to JustAnswer, I’m Louie. Sorry you had to wait awhile but I’ll do my best to help.Initially, re-confirm and post back with the complete model number of the "...onkyn receiver..."
Appreciate the additional information.
Perhaps an HT-RC230? ...or an SKS-HT230?
Have you tried a RESET of the HT-RC230?
Consider a RESET. A reset is both a test and a try of a fix. As it implies, a reset would force the unit to revert back to factory defaults removing glitches and config errors but would include memories, presets and user preferences. After a reset, the initial setup would have to be performed. If have not been done and should you venture to try: Please click / tap HERE.
May have to be done a number of times.
This is very critical - a reset however would not be corrective of an internal hardware concern; but it would be confirmed. In some instances, it may even expose/cause other issues.
As posted above, then it would be indicative of an internal hardware issue.
Are you then considering a DIY (do-it-yourself) repair approach? If yes, do you have access to and familiar with a multi-meter and even perhaps a soldering iron?
Great on the DIY!Please post back with clear pictures of the internal circuitry. Click HERE.These pictures would then serve as common references.