Since the repair of my Phillips 42 inch plasma TV went so well, I decided to research if there’s any Kenwood VR-407 repair for the remote sensor. It was great for years, then slowly, sometimes wouldn’t receive signal. Then after a while it worked again. I had tried different remotes so I knew the remote wasn’t the issue. The cause of the issue is poor soldering on the 3 optical sensor leads, which appears to be a common issue on Kenwood receivers.
The 1st two pictures are the board to the front panel, I removed the receiver’s cover (about 6-10 screws), then partially removed the front board (several yellow screws, some cables had to be unplugged – I wasn’t able to completely remove the board).