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preenfm2 and preenfm3 / Re: new build LCD lit but blank
« on: November 25, 2017, 01:18:20 AM »
OK I solved it. Didn't realize I needed a connection in the OLED resistor spot. Put a wire there it it works great. Awesome sounding!
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preenfm2 and preenfm3 / new build LCD lit but blank - (Solved)
« on: November 24, 2017, 11:40:45 PM »
Just finished building the PreenFM2 and it fired up 1st time. I used an LCD instead of OLED. The LCD is lit, but blank. I went back and checked all connections and then also put a 10k trimmer in for RV1 since I have the LCD(thought that could be the problem). I checked the jumpers, I have jumpers on 1 and 2 but not 3. I am using a compatible HD44780 LCD. I am using USB power only. The unit is making sounds and I can change them but I am doing so blind. Any thoughts what else I can try?
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