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preenfm2 and preenfm3 / Re: New Build Issues
« on: October 03, 2016, 01:34:36 AM »
1. I'm confused by the voltage testing. Where am I putting my multimeter leads? (not totally a n00b, but it's been centuries since I've picked up a soldering iron) From what I can deduct, this issue must be coming from power fluctuation going to the screen. How is the power being supplied to the display? That would probably help me narrow it down..
2-3. So I tried going via USB to a cube to power it straight from DC, and I got no RF noise, was just the high pitch noise I get from connecting direct to DC. That usb based RF noise is something that has been solved with balanced cables for me in the past (too bad the preen isn't balanced, is there a way to mod it to change that? Would the OLED noise reduction mod solve this problem?)
edit: i don't know if you've done away with it in this firmware but I don't hear the startup chime either...
2-3. So I tried going via USB to a cube to power it straight from DC, and I got no RF noise, was just the high pitch noise I get from connecting direct to DC. That usb based RF noise is something that has been solved with balanced cables for me in the past (too bad the preen isn't balanced, is there a way to mod it to change that? Would the OLED noise reduction mod solve this problem?)
edit: i don't know if you've done away with it in this firmware but I don't hear the startup chime either...