Panasonic Eur7722x40 Manual Top !!top!! -

While holding the button, enter the 2-digit manufacturer code for your TV. Release the button and test the power or volume.

This is a hardware issue common with age. Remove batteries. Use a cotton swab with 90% isopropyl alcohol to clean the rubber membrane under the keypad. Refer to YouTube for a disassembly guide, as the manual top does not cover hardware repair. panasonic eur7722x40 manual top