I'd be interested to see if it's the same battery that's in my 2754. I've got the service manual (but not the parts book) and have yet to find anywhere in there that describes replacing the memory battery. It may be obvious when I crack the hatch and take a look....my unit has the rear input option and I want to see if there's any way to re-plumb it for front panel input. Dino KLØS/4