love to see you figure this out, then like being an alcoholic, the next step is to get uniden to admit there is a problem. lol.Just talking this out: my hunch was the screen but removing the SD card totally eliminates the noise but the screen is on. So that connection is fine. The front headphone jack is fine. With the SD card in, the speaker and rear jack have the noise. But establishing a connection between the top plate and the metal housing on the screen reduces the noise. The processor is connected to the screen.
Now we are getting somewhere. Thanks Badboy536!