Beomaster 2400-2

Beomaster 2400-2. Not in use for last 3-4 years, collecting dust in a heated room.

I don`t have DIN speaker cables to test it and have no idea where to get them locally. Was working alright before putting away. Powers on, all sensory buttons work. Has some wear signs, but nothing serious. Trim painted white (some veneer originally). Treble backlight not working (see photos).

Assume that some capacitor might need to be changed and/or contact cleaned.