Yobo pcb seems not to work... Please tell me it ain't dead!

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-=FamilyGuy=-
Posts: 159
Joined: Thu Mar 22, 2007 11:19 am

Yobo pcb seems not to work... Please tell me it ain't dead!

Post by -=FamilyGuy=- »

Hi, so I was working on a noac project using the YOBO NES clone, and I completely rewired the card connector (72 pins) and relocated some aprts on the PCB (that were too "high"). I then tested it to see if it everything was right, and it seems it not =( !

I get a noisy video signal and sometimes a "full-colored" screen (red, blu, gray, etc.) ...

I really hope you know what is the problem, it doesn't look like any of the cart connectors pins are shorted. I really don,t know what's the problem, and I HOPE you guys would be able to help ! Otherwise I would have wasted 30$ =(

Thank you very much !

FG
Sharp Sapphire
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Post by Sharp Sapphire »

Some picture might help.
I get a noisy video signal and sometimes a "full-colored" screen (red, blu, gray, etc.) ...
That might be because of a dirty cart.



Usually cart solder bridges don't cause bad shorts.. they usually just make the game run in error.
Things I need to purchase for my NES Laptop:
1X PSone screen
6X 1.2v 3500mAh sub-C's
1X 1/8'' to RCA stereo Adapater
1X Radioshack repair kit

..yeaaaaah...
Rekarp
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Post by Rekarp »

how long where the wires inbetween the cart slot and the board? Sounds like a poor connection between the two.
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-=FamilyGuy=-
Posts: 159
Joined: Thu Mar 22, 2007 11:19 am

Post by -=FamilyGuy=- »

I can't take any pictures now, I don't have my camera. The carts I tried work well on my original NES(Yes, I still have a original nes that actually works like new).

The wires are about 1 inch long and I took them from a printer cable, so they should be great quality wires.

I really don't have any idea about what's the problem ... :cry:

FG
Sharp Sapphire
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Post by Sharp Sapphire »

How thin is the wire?

I don't think the yobo's main chip (Under that black dot) got static shocked, so it should be salvageable... check all the wires ( the 4 that go to the back board and the 11 that go to the front)... I manually resoldered every one of those.

The yobo is pretty much rock solid, at least it was for me. ^_^
Things I need to purchase for my NES Laptop:
1X PSone screen
6X 1.2v 3500mAh sub-C's
1X 1/8'' to RCA stereo Adapater
1X Radioshack repair kit

..yeaaaaah...
-=FamilyGuy=-
Posts: 159
Joined: Thu Mar 22, 2007 11:19 am

Post by -=FamilyGuy=- »

I'll try to resolder it like you did, but man it still should works if I didn't fried anything even without the controllers pins soldered ...

The wire were about as big as ribbon cables from HDD IDE plug.

Anyway I'll try it anyway, it can't hurt ...

FG

[EDIT]

Re-soldedred the 15 wires and it still does the same ...

I'll put back the cart in its original location ... and see if I really killed it ...


FG
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