One possible problem is that the small pcb needs to be reseated. If I remember correctly, it is quite common thath this pcb gets loose. You can reseat it when you replace the battery.
I'm talking about the small board which is seated to the large board:
http://www.pianoworld.com/Uploads/files/an1x_apart.jpg --- In AN1x-list@yahoogroups.com, "usillosptinto" <quesada@...> wrote:
>
> Hi,
>
> I bought an AN1x from ebay. I knew the battery was empty, but I assumed even with an empty battery I should be able to play (just not save new sounds. The first time I booted it, I did the reset (7-8-9) and it entered the main screen. I could change programs, but none produced any audio. Tried both jack and the headphones.
>
> Is this normal? Or is the audio broken? The volume pot was broken and l lying around in the box. Packaging was pretty bad. I suspect it might have been damaged during shipping. This is in Germany, where the word 'sorry' doesn't get much use. The seller says it was ok when he shipped, and scoffed any responsability. I opened a complaint on paypal... we'll see.
>
> Should I try to replace the battery just in case?
>