parricide
thank you very much for the help. no doubt i will be back with more questions when i actually start the job. i hope you dont mind :/

You're welcome and no problem!

i emailed KRK, or more accurately, gibson, to ask for a quote for a repair or if they would be able to advise me on components to replace damaged ones with and they passed me on to focusrite who they said handled their repairs.
focusrite then replied passing me on to another company who apparently handle their repairs.
the third company has not responded -_-

i guess the only help im going to get will be from you guys. with no customer support i am forced to go ahead with the repair myself. oh well, it should be fun, but buying KRK was a big mistake.

so it is 2 days until payday and i was getting excited about buying the parts to get this repair done, and guess what happened. the other one has died -_-
it is not the same issue either. this time the volume has dropped to almost nothing. when i first turn it on the volume is fine for about 3 seconds, then it slowly fades down to almost nothing.

hopefully i can see an obvious fault in there to fix that one. i will never buy KRK again.

i feel like the universe is trying to tell me something because my korg padkontrol just died a few days ago too! and the cost of the repair will be almost as much as buying a new one and more than buying a fully working second hand one. i told them i will buy an akai instead.

i dont say this often, but FML :'(
 

Hi guys! please help with my KRK ROKIT 6 G2, after 5 years, one day started very loud saw wave (or distorted sine)
sound on HF speaker, when none input signal. Please help with the issue. 3300pF and 1000pF capacitor replaced

Tunwe
Hi guys! please help with my KRK ROKIT 6 G2, after 5 years, one day started very loud saw wave (or distorted sine)
sound on HF speaker, when none input signal. Please help with the issue. 3300pF and 1000pF capacitor replaced

What frequency is the sound?  Use a free frequency analyzer app for your smartphone.  Did this occur before or after the capacitor replacement?  I'm guessing the tone will be 60Hz or 120Hz and you have a solder bridge and/or short circuit somewhere.

It's occurred before capacitors replacement, buzz tone peak level at 1.5 kHz

Thanks for the picture.  This could be a strange one.  And in your first post, you had mentioned you replaced a "3300pF and 1000pF caps."  Did you mean 3300µF/1000µF (as in micro-farad)?  "P" is pico.  Please confirm that the caps replaced at actually the power-supply capacitors (large) and in microfarads.

Yes, I mean 3300µF/1000µF. I found a solution, there was some corrosion on jumpers that make a short circuit with tracks on pcb. After cleaning, everything works perfect. Thanks for help :)

Tunwe
Yes, I mean 3300µF/1000µF. I found a solution, there was some corrosion on jumpers that make a short circuit with tracks on pcb. After cleaning, everything works perfect. Thanks for help :)

No problem!  Glad you got it fixed!
 
Curious to what caused the corrosion.  Was it the factory-installed, black goop or something caused by moisture?

I think the black goop caused the corrosion