I did all the possible measurement (again) and all the traces looks good. I also removed 68K, Denise, Agnus and the PCB looks perfect under that and redone a DiagROM test, same results.
Now the only available thing I can do is to replace Paula and/or Agnus that probably is faulty.
I'll look in the nearly places if I can find some parts and let you know the results.

Thank you all and Merry Christmas for now!

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Here is some additional info:
http://www.gregdonner.org/zz9000/zz9000compendium.html

The free ARMv9 core is definitly attractive, however MNT itself seems not to develop anything for it. There was a notice past year that someone planned to use it for wolfSSL, but no idea how far that project made progress.
https://www.amiga-news.de/en/news/AN-2024-12-00140-EN.html

Hey, so I have a Piccollo SD64 RTG card, and it works fine. Only issue is passthrough cable shows NOTHING, I am informed it needs a flicker fixed to get the Amiga's native output up to the same Hz level as native VGA. That being said, does anyone know of a solution for this, an external or internal Flicker-Fixer?

Just wondering if anyone here has one of these graphics cards installed in their Amiga?
https://shop.mntre.com/products/zz9000-for-amiga-preorder

I have been eyeing one for a couple of years. What puts me off is the extra items it has, such as USB, which I understand STILL do not work for it. Is this project abandonware? In the sense that they still make it and sell, it but that they have not fulfilled the hardwares potential.

Views welcome!

Had one. Only to discover it was a PITA! But this was one of the earlier models which I discovered needed something doing on the power rail or it could fail….

I believe the Network side isn’t as good as a X-Surf100 by Indivision. I couldn’t get mine to work.
Yes the USB is only a Bootable device? Couldn’t get the RTG to work, but the native Amiga side looks nice.

On a plus side. You can still buy these and download and get firmware updates.

https://shop.mntre.com/products/zz9000-for-amiga-preorder

If you are to buy one. Make sure it is a later model of the card with the power fix.