FM Towns 20F LED Problem

[samson7point1]

I realize this is an NEC forum, but I'm hoping to catch the attention of some of the excellent troubleshooters who have managed to fix so many issues with classic consoles.

Got an FM Towns 20F shipped from Japan a few years back.  The seller posted a video of it in action before he boxed it up and shipped it to me. There is a LED array on the front of the case which is supposed to light up when sound is coming out.  In the video the LEDs worked, but when the machine arrived they did not.  Everything else seems to work perfectly, but I would like to know if anyone has any experience repairing something like this.  I completely disassembled the machine looking for any signs of breakage or loose connections, but found nothing.

[Charles MacDonald]

Do you have a picture of the circuit board where the LEDs are connected? That would help to diagnose this problem.