Reply To: OSSC only outputs blue

[marqs]

Is there any other source you could test AV1/AV2 inputs with? If only the chip IO pads for AV3 are damaged, you could easily route the RGB signals from AV3 to AV1. AV1&2 inputs go through the LPF chip you linked which has better input protection so it’s more likely to last even if your PC98 generates spikes on the RGB lines. The ADC chip itself is not very intelligent and mainly requires stable Hsync period, it doesn’t matter if the timings otherwise are somewhat unusual like with PC98.