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Hi-res scan of CCII board...

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#1 PacManPlus OFFLINE  

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Posted Tue Apr 2, 2019 5:54 AM

Hi guys:

 

Does anyone have a scan of their CCII board (preferably hi-res if possible).

I really only need the area just under the SD card holder (with the plastic part removed if possible)…

I've decided to re-visit trying to fix my CCII so I have a multi-cart for my rec room, but the traces around that area are worn away.  I want to try jumpering the traces to the chip that's directly underneath the SD card holder (just beneath the 'U7' label).

 

Thanks, guys

Bob



#2 PacManPlus OFFLINE  

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Posted Tue Apr 2, 2019 1:56 PM

Going blind trying to see where the traces go to this chip... Ugh.

...even *with* a microscope.


Edited by PacManPlus, Tue Apr 2, 2019 1:56 PM.


#3 -^CrožBow^- OFFLINE  

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Posted Tue Apr 2, 2019 2:17 PM

I can try and scan the CC2 that I got over the weekend as it actually has the MMC card shroud missing. Only the contact pins are still soldered to the PCB. Actually been trying to source a replacement and replacement MMC so I can make sure it works after trying to fix it before sending back to the client.

 

Anyway, I can take some up close pics of the board if it would help? Scanning the component side won't work well though due to the components making the PCB blurry on the focus from the scanner bed.



#4 PacManPlus OFFLINE  

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Posted Tue Apr 2, 2019 2:28 PM

That would be wonderful if you could do that...  It would help a lot.

Thank you



#5 PacManPlus OFFLINE  

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Posted Tue Apr 2, 2019 4:43 PM

The close up pics, that is.  I know I said 'scan' but I did mean 'picture'...  Don't know why I wrote 'scan'... :dunce:



#6 Mitch OFFLINE  

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Posted Tue Apr 2, 2019 6:34 PM

I could probably take some pics of mine as well.

 

Mitch



#7 -^CrožBow^- OFFLINE  

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Posted Tue Apr 2, 2019 7:30 PM

Warning!!!! Large pic files attached!

 

Let me know if you need something else while I've got it opened up?

 

 

Attached Thumbnails

  • CC2_Overview.jpg
  • MMC_Pins.jpg
  • MMC_Pins_rear.jpg
  • MMC_Pins_2.jpg


#8 PacManPlus OFFLINE  

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Posted Tue Apr 2, 2019 8:13 PM

Thank you, -^Cro§Bow^-

 

...and thanks much, Mitch...  Anything would help...

 

So, it looks like not all of the legs of this chip (35AB - NZ17) are connected to something.  I can see where the left four lead to...  but two of the right legs don't seem to go anywhere.

 

In the picture, I think I am correct in tracing the Dark Blue, Purple, Cyan, and Light Green traces.  I have no idea where the Red trace goes... and I *think* the Yellow and Dark Green are correct.  The Dark Green seems to also be connected to the bottom of R6.

The black traces don't go anywhere?

 

If anyone can tell, please let me know if I am correct, as the traces on my board are completely gone.  I'm going to have to run jumper wires all over the place.

post-6-0-81472000-1554255049.jpg


Edited by PacManPlus, Tue Apr 2, 2019 8:16 PM.


#9 -^CrožBow^- OFFLINE  

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Posted Tue Apr 2, 2019 9:00 PM

Here are few more of the MMC from right and left side angles to see if it helps?

 

 

Attached Thumbnails

  • MMC_Right.jpg
  • MMC_Right2.jpg
  • MMC_Left.jpg


#10 Mitch OFFLINE  

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Posted Tue Apr 2, 2019 10:59 PM

I was able to meter out red to one of the black lines. The upper one I think, it is hard for me to see it. It seem to go through a via to the other side of the board (or maybe middle of the board) and come back.

The lower black one seems to go to the via directly below the chip.

Purple, blue, light green, cyan, dark green and yellow seem to be correct.

 

Mitch



#11 PacManPlus OFFLINE  

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Posted Wed Apr 3, 2019 4:30 AM

Thanks you much guys...  I'll let you know how it goes...



#12 PacManPlus OFFLINE  

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Posted Wed Apr 3, 2019 5:55 AM

Ok...  I've tried for about an hour yesterday, and another hour today.  I can't see where the traces are on this board, and the probes we have here are too big.

 

I give up.

 

Thank you both for the help. 



#13 -^CrožBow^- OFFLINE  

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Posted Wed Apr 3, 2019 8:19 AM

Is it possible that this is a multi-layer board and there are traces in the center of the PCB that can't be seen easily? I tried to get light under the pins but wasn't able to do so and still take a good pic. But I know the pin on the far right is attached to the top of R6. 

 

I never had seen a CC2 until this one was sent to me to see if I could get it working. Why was the MMC port essentially built onto the PCB instead of the usual MMC socket assembly? Did it not fit properly in the case that way? Just seems odd and a point of failure because this one was sent to me due to the fact that while the owner was trying to insert the MMC card, the shroud came loose from the PCB completely and hence, the card wouldn't remain in place to be read from. Only think I can think to do is get some 2-part epoxy and glue that shroud down onto the PCB? I'm assuming the shroud originally was just snapped in place on those holes through the PCB?

 

When I get home from work tonight, I will use some of my thin solder to help trace where these contact pins connect?  


Edited by -^CrožBow^-, Wed Apr 3, 2019 8:21 AM.


#14 PacManPlus OFFLINE  

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Posted Wed Apr 3, 2019 9:38 AM

Thank you so much...

 

Although I'm quite disappointed about how bad this one area is.  (I had forgotten how bad it looked until I saw it again).  I may just end up tossing it.

 

Maybe if I get a new chip, and try to run wires to it off-board (and then secure it with hot-glue or something) maybe I can get it to work.  I'm not concerned about it fitting in a case, as I can 3D print a custom one now.  (I'm still tweaking my design for the 'standard' case for Baby Pac-Man)...


Edited by PacManPlus, Wed Apr 3, 2019 9:44 AM.


#15 Mitch OFFLINE  

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Posted Wed Apr 3, 2019 12:24 PM

Using jumper wire is problematic due to the wires not fitting under the mmc socket. It may work better with copper trace repair tape.

If you can't get it working please don't throw it away. I am sure there is someone here with higher end soldering equipment that can repair it.

Mitch

#16 MegaManFan OFFLINE  

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Posted Wed Apr 3, 2019 12:31 PM



I can try and scan the CC2 that I got over the weekend as it actually has the MMC card shroud missing. Only the contact pins are still soldered to the PCB. Actually been trying to source a replacement and replacement MMC so I can make sure it works after trying to fix it before sending back to the client.

 

Anyway, I can take some up close pics of the board if it would help? Scanning the component side won't work well though due to the components making the PCB blurry on the focus from the scanner bed.

Good thing you hadn't sent it back to me already AND that the shroud that's missing is on its way to you now. What a coinkydink! :D



#17 Shawn OFFLINE  

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Posted Wed Apr 3, 2019 5:27 PM

Trace the whole damn thing, replace chips that can't be sourced, print money.


  • jhd likes this

#18 -^CrožBow^- OFFLINE  

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Posted Wed Apr 3, 2019 5:28 PM

Okay, I just traced out each pin off the MMC contact pins and found where they are connected to the next nearest point. 

 

I'm not sure if the pins read left to right or what normally but I've labeled them as 1 - 7 from Left to Right.

 

Pin 3 and 6 are both tied to ground and I have as Blue in this pic. Pin 7 on the far right is tied to the top of R6

 

The rest I've color coded for you...

Attached Thumbnails

  • MMC_CC2_Pinouts.jpg

Edited by -^CrožBow^-, Wed Apr 3, 2019 5:31 PM.


#19 PacManPlus OFFLINE  

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Posted Wed Apr 3, 2019 6:13 PM

Thank you -  really appreciate this.

 

Purple = NFG

Yellow = NFG

Blue = NFG

Orange = Connection

Red = NFG

Lt. Blue = Connection

 

Ugh.  Only two of the traces have connections.  I need to run all new micro wires.

 

Question: In your picture, does the 'orange' leg of the chip connect to the bottom of the resistor directly to the right of it?

 

Thank you again.

Bob



#20 PacManPlus OFFLINE  

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Posted Wed Apr 3, 2019 6:35 PM

Correction - the chip on mine looks like it reads "C6AC / NZ17".

 

I have a bunch of "F6AB / NZ17" chips.  Crap.  Not the same.


Edited by PacManPlus, Wed Apr 3, 2019 6:36 PM.


#21 -^CrožBow^- OFFLINE  

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Posted Wed Apr 3, 2019 7:15 PM

Question: In your picture, does the 'orange' leg of the chip connect to the bottom of the resistor directly to the right of it?

 

Thank you again.

Bob

 

Yes the orange leg from pin 8 off of U7 is connected to the bottom of R6.

 

And your more welcome Bob!



#22 CPUWIZ OFFLINE  

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Posted Wed Apr 3, 2019 7:22 PM

Bob, you need at least 30AWG wire for those fixes, but you can also try UltraIDE cable strands.  They are great, you have seen them in our private thread, many times. ;)



#23 -^CrožBow^- OFFLINE  

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Posted Tue Apr 16, 2019 12:07 AM

I will have an update on this very soon. It won't look pretty as it is the smallest SMD traces I've ever worked on but..I will have an update.



#24 -^CrožBow^- OFFLINE  

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Posted Tue Apr 16, 2019 5:17 PM

Happy to announce that PMP's CC2 lives again. It was a heck of a learning lesson for me as I've never soldered with something so small like this before, especially given I don't normally do SMD work since I haven't the right equipment for it normally. In case anyone is curious about how I did it, just shoot me a PM. I assure you that no magic or small animals were sacrificed or used for this.



#25 PacManPlus OFFLINE  

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Posted Wed Apr 17, 2019 7:19 AM

-^Cro§Bow^-, you are freaking AWESOME!







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