Another PCE Duo, recapped with no disc spin

[YoshiKnuckles]

Alright, so I'm working on another Duo.

The console worked fine before the recap, but sure enough it had leaky caps. I replaced all of the caps in the system, and the hucard games work just fine.

I can't seem to get the disc to spin up though. As if the laser can't focus in on the disc. This is kind of annoying considering it played the CD game fine before the recap...

I've tried playing with the trim pots to no avail. They spin round and round though. I don't think they are supposed to do that...

What should I try first? Replacing the pots, or replacing the laser assembly? I have a spare Hop-M3 laser here. I'd have to wait for the pots.

The laser will do a little jump when I turn the console on and off as well.

Any ideas on what I should try next for it?

[mickcris]

you most likely just have the pots adjusted really far out of whack.  it happens sometimes that the cd rom will be working before a recap, then not afterwords till the pots are adjusted.

there is a guide on here that should hopefully help you get them back where they are supposed to be.

[YoshiKnuckles]

I've been following it, and no matter what I seem to do it won't read. =/

I can't even get a RF signal picked up on the test point with my oscilloscope.

I'm thinking replacing the pots can't hurt as I can't seem to dial it in at all and they just go around and around with no ends.

[mickcris]

they are supposed to do that.

i always take an initial measurement with my multimeter (on ohms) before i start adjusting anything so i can get them back to their initial positions if i screw them up too bad.

here are the measurements from the last one i did.

measure from the side that has only 1 pin to either the bottom (for 101, 102, 104, 105) or left pin (for 103) on the side with 2. 

101 = 10.21
102 = 8.65
103 = 16.5
104 = 16.48
105 = 0.2

I think all those a k ohms but not sure about 105 range but you should never really touch that one anyways.  hopefully those numbers will get you back to a descent starting point.

[YoshiKnuckles]

I'll be messing with it again later.

I seem to be screwing everything I do up today, so I'm going to stop for now. XD

Edit: I kind of suspect one of the BA6290A ICs. Any tips on testing these?

Another thought was to clean the console again and see if that somehow helps.

Update: I decided to give the CD section another cleaning. I'll reset the pots to those values and go from there once it's dry.

[YoshiKnuckles]

Finally got around to working on this again.

Literally cleaned it a few weeks ago, put it in a box and let it sit.

Plugged it in today and IT WORKED FIRST TRY.

All I had to do was tweak one pot and it's working beautifully.

WTF Duo, WTF!

[Xenogears]

WTF...certainly the meaning is  "Wonterful Duo Wonterful"