I faced this problem while trying to clean the monitor and opened it. At start i faced problems with magnetism in the up right corner because of the magnetic screwdriver i used. I managed to send it to a technician who removed the magnetic problem but stil i got the pincushion problem... The puncushion problem started when i was trying to solve the magnetic problem myself, with hand magnet, by moving things...etc... Now the monitor is reccaped and there is no magnetic problem but i still got this pincushion thing ....
https://pasteboard.co/yBvyfsmj3nH1.jpg
(about:invalid)