Aiwa NSX-330 mini system problem

[FrankLav]

Hello,

My Aiwa NSX-330 system was working ok, I was mainly using it as an amp for the only line in it has, and one day, while it was on, I was trying to adjust the volume via the remote, and it wouldn't respond (though it was on and sound was still outputting). At first I thought it was the remote batteries, since I also tried adjusting bass level, etc.

But the batteries were ok, and when looking at the display of the system, I saw that the normal 5 FFT bars section weren't operating even though sound was produced by the system (from the line-in). Adjusting the volume control manually (the big motorized knob) was working, but everything on the display and electronics was frozen and unresponsive.

Even power off wasn't responding. So I disconnected the power cord, and now have a dead unit: reconnecting the power did not even bring back the usually flashing clock display or anything.

It seems like it can't be the main power fuse, as it was getting power in the "hanged/frozen" state I've found it.

Do anyone have a clue of what I might try to fix it ? (I tried letting it be disconnected from everything for a day, and just plugging power, but still the same: no flashing clock on the display, and of course, no response from hitting the power button).

Thank you for your help,
frank.