Hello everyone, I bought a GL2000 from an acquaintance here in Brazil, I had never seen one of these around here.
I bought it knowing that I had things to renew, initially it had an unbearable buzzing sound, so I changed the power supply capacitors and voltage regulators.
The problem is that I noticed that as soon as I activate the EQ on any channel, a certain amount of noise is added.
When deactivated the noise “disappears”.
I’ve tried everything here in Brazil and I couldn’t get help from anyone, I’ve been trying to fix it for almost a year, as soon as someone can answer I’ll send you more details.
I will attach an image below that shows part of the region where the EQ circuit for each channel is located.
There is no noise in Terminal 7, the noise comes from terminal 1.
I have already replaced this Integrated Circuit numerous times, but the problem has not been resolved.
Sorry for my English.