Hi, friend, I have Korg Pa3x-76k, first this have problem, after play some tones about after 5 - 10 seconds delay a crackle could be heard in the speaker, as if the echo of the played notes was distorted. I replaced the PCM4202 and PCM4104 circuits, because they responded to heating, or cooling. If I cooled them, the cracking stopped, but after a while it started again. But the replacement didn't help, at first it behaved the same, but now it doesn't play at all, if I cool it down, it still crackles in the speaker but it doesn't play anymore. I checked the tantalum yellow capacitors, not all of them, but nothing wrong. I can't move on, I've already replaced the circuits again but it doesn't play at all, the display works, if I measure the control points under the MX5010B IC, there is some digital signal there. It still responds to cooling in the area at the PCM4104. I can't find the MX5010B circuit, if I had it, I would try to replace this one too, but I suspect that it will be some kind of capacitor, but I don't want to take them all out. Could you help me with that? Would it be possible to send you the mainboard? Are you from Romania? Or can you advise? I have the diagram, but it's quite complicated
I have one, but it has this problem. Do you have any idea about it? I don’t know you. What is the part that is causing this problem? If you know the problem, please advise me. Thank you
