Hi all, just want to document my troublehshootings methods for fixing my printer. I've had a Robo 3D R1+ since 2016 and its a really reliable printer and of course with time, things will stop working eventually. Only modifications I have done to the printer is install a smart LCD screen that lets me run the whole printer off a SD card and that was a week or so after I got the printer. Also lets me see/change temperatures, adjust motors, and adjust lots of other values. Since then haven't had issues until now. It appears the bed sometimes will heat up all the way to what I have 75C. It used to be at the standard 55C but I noticed over the past year my prints wouldn't adhere very well and since going to 75C a few months ago, it's been no issue. So now it will heat up to 75C sometimes and then as the print goes on for about 5 minutes, the bed will stop heating and lower to 20C-30C range. The times it doesn't heat up, I just had to wiggle the connection cable and it heats up to 75C but will still die after 5 minutes of the print. Putting my hand on the bed it does feel hot so it does actually temp up. Things I've done: Updated the firmware to ROBO3DR1PLUSV2 by downgrading my version of Arduino to 1.6.9, same temperature issue. I have tried just tightening the connection the cables to the screw terminal block and still same issue. I believe I have the V1 of the printer that doesn't have an additional ribbon cable connection for the heat bed so I can unplug it from the top without taking off the bottom cover. I would check the voltage when the bed is trying to heat but it seems the multimeter I have isn't working. I also took off the bed entirely to investigate the cables that heat the heating element and it seems fine. Another test I did was to temp up the printer to preHeat settings which I have at 210C for nozzle/extruder and 75C for the bed. I had to wiggle the cable for the bed to heat up. I let it sit for 5 mins at 75C and the bed held it's temp for a bit of it then declined. So maybe the connection at the terminal block is bad. I didn't look into that so much. Didn't want to risk taking off the current RAMP board to look under it. I could possibly just have to replace that individual terminal block not sure. From research on the forums it appears it's probably the RAMPs board so I'll order one of those. Although there are so many on amazon I believe I need the 1.4 version and the board has those 5 stepper motor drivers with the heatsinks on them not sure if I need a specific one for it. Anyone have a suggestion on one? I saw some value pack ones that come with extra stepper motors also which would be nice purchase for the future. Also for the heatsinks I can just use thermal paste to attach them to the boards? Any help/guidance would be appreciated!