I build my OSSC from the ground up and it’s working as of right now. But there are some issues left. The main issue I have is, that some inputs (SCART(Saturn) / Component(PS2)) are noisy with green / red dots.
Sync and HDMI connection overall seems fine. VGA input of my Dreamcast also looks good and more or less noise free.
The noise gets worse, the higher I go with the line modes. Line x2 only has sporadic noise and Line x5 has noise all over the place.
I of course looked out for bridges / shorts. Does somebody has a good starting points to debug further? I personal think that the problem may be located somewhere between the THS7353 and the TVP7002PZP, since VGA doesn’t seem to be affected.
I went with over the pins between the FPGA, IT6613E and the HDMI socket with a solder iron and solder wick and reflowed the ESD protection on the HFMi traces again. This seems to resolve the problem with the digital noise.
Now I only got a problem with the OSSC not beeing able to flash the serial flash and loading the profile settings. JTAG flashing works, but maybe I have an incompatibility with the SST25VF016B I use as a replacement for the hard to get original serial flash.
But this problem here is solved now. Thanks a lot!