Brief image with Pluto II

[BenoitCaron]

Hi,
I've been asked to take a look at a Gamecube which would not output HDMI anymore. The Gamecube had a Pluto II rev E board. I redid all the wiring 4 or 5 times, and face the same issue every single time. Upon startup, the image will briefly appear, and then a black screen.

LED patterns seem ok, AV out works, wiring is kept at minimum length.

Any idea?

Regards

https://github.com/ikorb/gcvideo/assets/5237965/9b5fd7ad-b72f-4122-9eb7-83736c8e108c
https://github.com/ikorb/gcvideo/assets/5237965/9899b3b3-b301-4485-9e2e-78add3670485

[bryanparadis]

Did you check https://www.knjn.com/docs/GCVideo%20mod%20checklist.pdf

and

https://www.knjn.com/docs/Pluto-IIx%20HDMI%20for%20GCVideo%20mod.pdf

The second one describes a jumper that may need to be bridged for some tv sets to work properly with it.