I got the capacitors in the mail, and replaced them all.

Apparently, the positive end of the C46 capacitor was wrongly marked on the circuit board.
I documented the capacitors on this issue two motherboard, for future use. 🙂

When tested, the image still had that yellowish tone, so it was time to adjust VR1 and VR2.

I used my oscilloscope attached to the composite wire to get the noice level as small as possible.

Much better, now it is white as it should be. 🙂

Can’t test anything else right now, because i am waiting for the new keyboard membrane from UK to arrive.

To be continued. 🙂