AES would not read carts

[Matan]

Hi all,
I got a Japanese AES model NEO-AES3-6.
The board looks in good shape.
When tested with a game I get a blue screen.
When tested without a game, I get the blue screen.

I cleaned the cart slot with isopropyl alcohol
I’ve checked for bad traces, did not find any.

Any thoughts of what might went wrong?
Thanks

 

[hatmoose]

Congratulations on picking up one of these, still the coolest looking console ever made IMO - that epic 80s retro-futurist design has stood the test of time.

You’ve probably seen this
https://wiki.neogeodev.org/index.php?title=System_self-test
So you’re getting “all tests passed”

Sounds like you’ve already cleaned the edge, wiggled the cart, inserted it not-quite fully and etc, and probably tried a couple of other known-good carts too

Next step is to get the NeoGeo diagnostics bios in there to get some more detailed info about what’s going on
This one is the original
https://wiki.neogeodev.org/index.php?title=Diagnostics_BIOS
And this one is updated with new features better error reporting
https://github.com/jwestfall69/neogeo-diag-bios

You can probably skip the z80 test cart for now, but the output from the diagnostic bios will be helpful