Hello --

This message started displaying a few days ago. Approx a year ago one of
the speaker channels started popping, so I changed Balance to 100% on the
other channel.

The operating instructions booklet only mentions the display, but offers no
troubleshooting information.

Is the "Protector" problem expensive to fix? Is it worth fixing this unit?

If it is a board-replace fix, can anyone suggest which component(s) to look
for, a supplier for parts and service manual?

Thanks for any help.

Larry Mehl