Can you please listen to attached mp3 and tell, is it normal, or something wrong?
Noise remains when i disconnect LCD and CS from the core.
So far i can not exclude PSU (it's one from dvd player +12v/-12v/+5v) but noise lasts about half a second after switching PSU off.
Cable from core to OPL3 board is about 12cm, soldered directly to core.
Thanks in advance.
And the OPL3 +5v led lights with only J2 connected.
Edited by Schrabikus, 03 March 2012 - 08:22.