ue32eh4003 I have this and volume keep going up. I even open it up checked the connectors, but nothing command circuit seems damage. the problem is that is the same unit for the remote control, so if I unplug it I will have no control at all 😞
It might be a long shot but the reason my sound kept going up was because the batteries in the amazon firestick needed changing. It seems that if you have a firestick it kind of takes over your tv, so give it a try it might be that.