PC ENGINE DUO "PLEASE SET DISC!"

[elartur77]

Hello everyone.

Hope someone can help..

I got this DUO some months ago no working, I replaced all the caps, cleaned the laser and then worked like new.. I could play anything I threw at it original and backups, I used it for around a couple of months working great, but then I just leave it for a month or so, and yesterday that I wanted to play a little more it just dont wanted to read anything!!.

I just got the mesage "PLEASE SET DISC!" with every disk I tried, orginals, backups, music CD etc..

It start to spin at normal speed, nothing seems wrong at all, no weird noises, but then after a few seconds trying to read it just stop and appears "PLEASE SET DISC!"

The HUCARD part works great! but the CD part dont..


I open the thing and tried all this:

-Clean the lens.

-Reseat the laser and the harnes cables.

-Try another harnes from other unit.

-Change the laser with a brand new one.

-Check continuity on the recently changed caps and reflow the solder.

-Messed with the pots but nothing helped.

-Checked VCO with a multimeter and gaves me 4.33 Mhz when starts to spin, but still stops and "PLEASE SET DISC!"

So I really dont know what else to do, Im lost here, the system didnt fell off or got wet , I put it in a well ventilated area..

The only thing I can think of is that the board is a little messy with the solder flux i used, maybe a via got cloged?

I dont know, please could someone can give me some advise?

Thanks