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No problem! Any help is very appreciated! :D

I only have a 2 channel oscilloscope, should i try checking hsync and the pixel clock perhaps?

yeah, im trying to adjust the front/back porches but these settings worked perfectly on my SE before it bit the dust, will have to try stuff out. here's the relevant part of the config.txt of the raspberry pi in case it helps: ``` dtoverlay=vc4-kms-dpi-generic dtparam=hactive=512,hsync-invert...

I have a mail forwarder in California so it should be no problem :D God i hope it's that. Does the MOSFET in the flyback really gets quite warm? The smell has a hint of something burning. Not sure if it smells like dead fish though lol

Thanks @mg.man for that info! Right now i think i have completed the "transition" to my own voltage regulators :) I've eliminated practically everything that related to the old power supply circuits and i bypassed 12v, 12v to the neck board, 5v and 29V to the flyback. Though im smelling...

So after removing all components with *P* in its designator/anything that has to do with the old power supply circuit (except RP39 and CP31 coz it's for the neck board's video signal), it seems to be working now.. albeit with a shimmering video signal though.

okay, i guess i didnt properly inverted the sync signals, but when i do, im just hearing a buzzing sound and the 5V regs i have are shorting out for some reason (probably from overvoltage/shorts/overcurrent). Also seeing this picture when i disconnect the video and vsync pin:

Hello folks! So i've gotten a Mac Classic with a dead logic board and im trying to replicate a project in which a raspberry pi 4 drives its CRT. Also when i plugged it in, i forgot that i have 220V system and that i imported a North American variant of the Classic... so it kinda went kaboom...