Hi csom
check that pin 3 IC1A and the input connectors all have a ground connection as per (3 BAND EQ ) schematic .
check that pin 3 IC1A and the input connectors all have a ground connection as per (3 BAND EQ ) schematic .
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Thank you so much Epicycle for your kind response.
I compared the schematic and the PCB I made.
They seem to be correct after I fixed my initial mistake as pointed out by Bobo.
But still I will check it again as per your suggestion and report you back.
You are right!
It is finally solved now. I had to interconnect ground tracks. My bad mistake.
Now everything is working fine. I checked with output from cell phone, mp3 player, CD player, PC... all. 🙂
Thank you really so much 🙂
Wish you a happy new year 🙂
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