Pc engine duo - drive spindle always spins <SOLVED>

[xinsizionx]

This is my first post and I was hoping to get a little bit of help. I have search all over and can't seem to find any information on this. I just bought a pc engine duo and the hucard side works great, but the cd side is always spinning. even if you play a hucard, the spindle will just spin. I did a complete cap kit on it and everything went well, The sound works great now, but the spindle is the same. Thanks you so much.

[thesteve]

look for an open via near the light

[xinsizionx]

 Thanks for the fast reply! I'll look around. Is this a common place that causes this?

[Keith Courage]

Thesteve helped me out with this once. Found a bad via right by the two 47uf caps that are by the controller port. I bridged a large wire through it and fixed the problem.

[xinsizionx]

I can't wait to get home and take a look.... 2 hours for a wheel alignment lol. Thanks so much.

[Bernie]

Man, these systems sure had some weird issues.  And how you guys find em, and fix em...  Glad y'all have the know how is all I can day.

[xinsizionx]

i didn't find anything on the top of the board, but on the bottom in the same area I have a few bad traces.

[xinsizionx]

keith, would you happen to know the spot? I tinned a few spots on the bottom and ran one jumper and I'm still in the same boat.

[Keith Courage]

I had to do this to another one recently. Here is a pic. Yours may not be in the same place but hopefully it is. Just to the right of the bottom 47uf cap is what fixed the issues for me.


picture share

[xinsizionx]

thats a wire running from top to bottom?

[Keith Courage]

yes, I took part of a really thick wire, put it through the hole, and then scraped off enough area to solder to on both the top and the bottom of the motherboard.

[xinsizionx]

I'm looking and checking for continuity, but i just can't seem to find anything. any reason why you used a thick wire?

[thesteve]

thick wire was overkill
if you move right from that pic to the 2 22uf caps just right of the NEC chip and check for 5V it will confirm that via

[xinsizionx]

Thanks for the reply... Can you please be a little more descriptive? I'm still learning with this. I see the area with the caps...

[thesteve]

with the unit powered on 2 22uf caps just right of the NEC microcontroller should have 5V on their + side