Hello,
it's possible to swap the 3 Sunon fans of the monitor. But you will lose warranty and you have to cut the fan wires to rewire the mini pwm connectors (you know it from graphic cards) which the PG35VQ is using. The "same" fans from Foxconn in better quality from China with the same housing have pico blade connectors.
The main problem of the PG35VQ is the rattling noise of the fans at lower rpm (idle). I have tested two PG35VQ. Both have rattling fans. Its result the of using high rpm fans at low rpm. Same issue with gpus, so they have mostly an idle mode (spin stop of the fans).
It really sucks if you buy such an expensive monitor, because its only useable as a second monitor for gaming. Its horrible @ idle.
I swapped out the 3 fans of my first PG35VQ (sold it for LG OLE48CX, but now its too big and 600 hours usage as pc monitor for permanet burnin sounds not very good :D, and on OLEDs hdr brightness sucks hard), before i did the firmwareupdate which is fixing the flickering and scanline bugs. Some users telling this firmwareupdate is changing the fan behavior. Is this true?
Best regards
angrybluebird