Denon DCM-380 CD Player Dead (PS ok)

[fuzzoli]

I was given a Denon DCM-380 5-Disc CD player and it's observably dead.  Easy, must be the fuse!  Nope -- fuse is good, so...

- +3.3, +5, +12, and -12v supplies all measure good, as do the two supplies going to the "Front Section".
- The ICP-N38 circuit protection devices all measure within specs (about 0.4 ohms).
- There is no response to any button presses, no visible motion of motors, and no other detectable sounds of gears or servos.

There are /RST and PWDN pins on the main micro (IC502), so I was thinking a bad part was holding the proc in a reset/powerdown state, but that also does not seem to be true (/RST and PWDN are both a 5v).  There is no observable waveform across the processor's crystal (I'm not even sure it would be measurable on the scope even if working).

I was hoping for a quick repair, but it's not looking that way any longer.

Any thoughts?

The manual is here:  https://www.manualslib.com/download/1258750/Denon-Dcm-380.html

Thanks!

-Frank

[shakalnokturn]

You should see something on the quartz if your oscilloscope has sufficient bandwidth and your probe isn't loading it too much.
No clock fits with your symptoms...