aoc 4vn

unit has good linearity and color but the whole picture has the jitter.

it is hard to read the text because of very thin horizontal black lines on a white background finely spaced on the whole picture.

on higher refresh rate the picture gets worst. lowering the refresh rate reduces the shake but text is still unreadable.

btw icons and text looks double.

Check filter capacitors on the secondary side of the power supply and also on the CRT board

Regards

Moses