João Victor Salles
New member
- Joined
- Mar 6, 2021
- Messages
- 2
First of all, I apologize for my English, I was born and live in Brazil.
Here we go, I bought a used GL 2000 (Allen & Heath), it came with some damaged channels, I managed to fix most of them, but I have a very annoying problem regarding noise, but what bothers me is when I activate the EQ of the channel strip and it adds a strange noise.
I am using a tone generator to input a 1kHz signal into the console, when I activate the EQ, no matter which channel I am on, I have a noise around those 1kHz.
I am not at home to send the photo I took of the Spectrum Analyzer, but I can confirm that the noise starts at output pin 1 of the OPAMP TL072 in the attached schematic.
This is just one of the problems, I will be very happy if someone can help me, soon I will send the photo of the improvised Analyzer with a PRO-Q3 plugin hahaha.
- Kind regards, João Victor.
Here we go, I bought a used GL 2000 (Allen & Heath), it came with some damaged channels, I managed to fix most of them, but I have a very annoying problem regarding noise, but what bothers me is when I activate the EQ of the channel strip and it adds a strange noise.
I am using a tone generator to input a 1kHz signal into the console, when I activate the EQ, no matter which channel I am on, I have a noise around those 1kHz.
I am not at home to send the photo I took of the Spectrum Analyzer, but I can confirm that the noise starts at output pin 1 of the OPAMP TL072 in the attached schematic.
This is just one of the problems, I will be very happy if someone can help me, soon I will send the photo of the improvised Analyzer with a PRO-Q3 plugin hahaha.
- Kind regards, João Victor.
