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OK, next question when you say hot end heater where am I placing my leads exactly?

Thanks for the help everyone. I did check the other side and noticed no issues, and I was using the firmware from SeeMe.

Ultimately they sent me out a replacement for that little LCD board and I was able to move past this issue.

So got me new part and got my screen up, yay. Moving through to calibration and I can't get my print head to heat up. The temperature on the head registers roughly room temp, and if I hold a blow dryer on it I can get it to go up and down. So that's working. I've checked the voltage on the Rambo ...

That has already been done. I get nothing if I rotate the plugs.

Argh! Now after uploading the firmware I have lit but blank LCD screen. I know the firmware uploaded because if I hit the reset button above the selector knob the carriages raise to the top and are stopped once they hit the limit switches. I've also played with the contrast. Screens lit, just blank ...

Winner winner, give Earthbound a prize. The LCD board did have a really ugly solder joint causing the problems. I cleared the extra solder and am able to continue.

All three pairs show 12.3 V.

Need some help troubleshooting a Rostock Max V2. I finished assembly last week, went to turn it on and surprise nothing lit up. I was told to turn the cables running to the LCD the other way. Did that. Nothing. The RAMBO board does not light up, nor does the LCD but the boards fan does power up and ...