REPAIR GUIDE - TurboDuo/PC Engine Duo: Total capacitor replacement chart

[thesteve]

rest your wrist on something for stability.
the 47uf SMD cap behind the heatsink (right side) is where i would start with a meter, as its the CDA volume control voltage

[SNKNostalgia]

Having another go at it tonight. Wish me luck, lol.

Volume level is now secondary, as getting the machine to play games again is my concern for now. I know it works after my previous test with region mod disconnected. I just have to check my wiring connections on the HuCard slot. I know I have the right pattern. It is a tight and small in that area, so it is easy to connect pins next to each other by accident. You couldn't pay me to mess with that section.

[thesteve]

remember, if your meter has a ---|>|-- function, you can test the mod with it.

[fraggore]

Thanks for the guide very usefull.

[turbokon]

I'm working on cap replacement on a pce duo I just got from game of Japan. I noticed that there is a place for a cap that's not on the chart. I can't remember if I removed the cap from that spot or not but from the looks of residue, I assume there was. Anybody knows what value cap this might be, next to that Sanyo chip?

[thesteve]

never installed

[turbokon]

Cool, thanks.

[thesteve]

jailbar filter caps (someone asked)

[NightWolve]

Wow, you really are a dangerous "cowboy," aren't ya, steve? What kind of experimentation was necessary to figure this kind of thing out I wonder ?? Grounding certain pins of the video chip with caps, wouldn't have thought of that, ever... Does anyone have a good picture of this "jailbar" problem BTW ? Just curious. I don't quite know what it is exactly.

[cosmos99]

Hi everyone , here's a listing i've made at Digikey , it includes all caps ,same size ,shape ,voltage and capacity.

CMS

10 uf 16 v x 6 565-2442-1-ND (dia 4 surf mont 4,3 x 4,3)
22 uf 16 v x 19 565-2443-1-ND (dia 5 surf mont 5,3 x 5,3)
100 uf 6v x 10 PCE3852CT-ND (dia 6,30 surf mont 6,6 x 6,6)
4,7 uf 35 v x 4 PCE4687CT-ND (dia 4 surf mont 4,3 x 4,3)
22 uf 6 v x 19 PCE4647CT-ND (dia 4 surf mont 4,3 x 4,3)
47 uf 16 v x 4 PCE3889CT-ND (dia 6,30 surf mont 6,6 x 6,6)

ON HOLE

1000 uf 16 v x 1 P5142-ND
470 uf 16 v x 3 493-1523-ND
100 uf 10 v x 1 P5123-ND
330 uf 16 v x 3 399-6579-ND
100 uf 16 v x 2 399-6648-1-ND
220 uf 16 v x 1 493-1783-ND

[SNKNostalgia]

Finally sent my Duo off to thesteve. I got fed up with the cap replacement errors adding up.

Also, those pins for the region mod are quite a pain to get line up with the wires along with the small space. I even slightly touched the plastic on the HuCard slot with the iron. I was getting a little anxious I guess.

[JohnnyPhantom]

This is like a Where's Waldo game for me as hard as I look I cannot seem to find the 1X 3.3uf 50V cap on the photo, can anyone tell me where it may be?
thanks!!


Never mind found a previous post that says where it is, under the CD drive cables

[SNKNostalgia]

Forgot to mention... I got my Turbo Duo back from thesteve Monday. The system is running better than ever. Total cap replacement, rewired the region mod since I goofed it, took out the CXA 2075 and did the newer S-video mod with the jailbar fix, tweaked the laser to run even better and added some RCA stereo jacks to the back for me. The video looks even sharper, minimal jailbars, and the colors and brightness seem to be more accurate to the original look.

In 2 days I beat Gate of Thunder, Lords of Thunder, Double Dragon 2, Ninja Spirit, Cadash, and almost beat Super Star Soldier again. I am playing through Ys 1+2 and almost finished beating Ys 1. Seems to be running for the Gold.

[MotherGunner]

So I have an S-Video Duo-R and I believe I have the jailbar issue.  Are we talking about the faint vertical lines on the screen?  If so, does The Steve have a fix for this? 

I also have the same issues on a couple of NES's I am trying to get repaired.

[thesteve]

So I have an S-Video Duo-R and I believe I have the jailbar issue.  Are we talking about the faint vertical lines on the screen?  If so, does The Steve have a fix for this?  

I also have the same issues on a couple of NES's I am trying to get repaired.

post 127..............(look up)

duo-r same pins, top of board