for some reason, after I moved my 3D printer, it seems to have a brownout whenever I turn on something that draws allot of current. Initially the power supply would shut down every time I turned on my heated. When I shut it down again, everything would come back on. I checked for shorts and turned on the heatbed with it unplugged and all worked well. When I plugged it back in, the problem seemed to have resolved itself. I could heat the bed, but when I then started printing the brownout started again, which caused the steppers to slip every couple of seconds.
Anyone experience this before? All I did was move my printer from my study to my garage. I also have it connected to a new PC, but the config should be identical. Don’t think it has anything to do with the PC since I can actually hear the fans all over my printer shut down when the “brownouts” happen.
My garage is much colder than the study at about 15 degrees C. Surely that wouldn’t cause it, would it?
Its definitely not a real brownout as it has no effect on the desktop PC that is now driving the PC nor the lights in my house.
What could it be?
Ps. I’m running a custom delta using Ramps 1.4 with Printrun and Marlin for probably almost 4 years now.
Sounds like a power supply issue or a loose or kinked cable. Is it possible to move it back and see if it still has the same symptoms?
It is probably drawing more power to heat the bed. How many watts does the power supply produce? Else than that, I suppose there could be a short, but if he bed heats up okay that seems less likely. You could put something on the heated bed to help it warm up. You could try to put insulation under the bed if you are careful not to cut off venting for the control board and do not make the bed less level. I guess fhe insulation would have to have holes for any spacers that are used.
You now have it plugged in to a different physical outlet. Which is probably on a different circuit. The obvious answer would be that that circuit is not wired to handle the needed power draw. Or the resistance of the electrical wiring is high enough to drop the available power. Put a meter on the mains where you plug in, and see if it drops when you power up. Safety first, but doing the same for the circuit at the breaker box could point toward or away from the wiring in between as the problem. Some garage circuits end up wired to only handle light loads. Even though that is where a lot of power tools get plugged in.
Also, a quick and simple check would be to check all your high load connections. Especially the connections at the RAMPS board coming in from your power supply.
@Brad_Barrone I have had the clamping screws come loose and a connector melt down before.
This is driving me crazy. This printer with the same power supply has been working for years. I’ve run power tools from that outlet but then I’m not sure that you would notice a mild brownout. I guess it could be something with my power supply. I’ll strip it down and see if something is wrong. I have checked the connections going to the heated bed, but I should probably check connections from the Power supply. Its all built into a base without anything able to move around though. Thanks for the feedback so far. 
Try not to electrocute yourself. There is high voltage stuff in there!
I’d have to agree with @Phil_Duby . Most house circuits are wired for 15amps at least here in the US. 15 amp wiring gets hotter than say 20 amp wiring so you could get slightly different results based on the amperage available on a circuit. The hotter wire gets the less voltage you have available. This may not be the issue but I’d at least check.
In South Africa, most plug sockets are wired for 16Amps and 230V. Surely a single 3D printer could not possibly come even close to those limits… It’s original spot had it connected on the same socket as my PC. I’ll move it back to the old socket for a test before I open up the Power supply though. Thanks