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I have had my maker select v2 for about a year and last week it started smelling of burning plastic and wasn’t really extruding.

I went to check it and the printer randomly rebooted. The screen stopped turning on and everytime I turned on the printer it started smelling again.

I bought a new power supply, wired it up, and the printer worked after resetting the board. I went to Quick Settings -> Preheat PLA, and then more smoke and burning smell. I realized I bought the wrong voltage supply, so I ordered a correct voltage one. I rewired the original supply and now the screen doesn’t turn on.

I have run out the warranty from Monoprice and this is my second replacement printer from them. Any thoughts or suggestions?

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@ChrisBuildsStuf,

Hi,

I would really recommend not using it as from what you described it seems to be more of a fire hazard than 3D printer at this point.

It seems like you have a problem with the hot end (either the temperature sensor or heater cartridge) if there was smoke.

It could also be that there was a loose wire somewhere on the board itself or the MOSFETs are done for.

Generally, as a rule of thumb when your printer starts smoking or smelling of smoke, you will have to scrap all the electronics components (board/power supply, etc). Perhaps you could sell the hardware for parts like the nozzzle/motors/frame/bed etc and then use the funds from that to buy a new one.

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@Zapaer I have traced the problem to the connector from the power source to the board. There are several burn marks, and one of the solder joints is blackened. I need to find out which connectors to use and resolder a new one on. I also bought a new power supply because I believe the smell was coming from the board and the power supply. Now I know the smoke was from the board connector.

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Ok, at least now you know what the source of the problem was.

I still believe it might be worth the investment in getting a new board instead of trying to solder it. Since you know that you just need to replace the board now, you can order the same make of the board from online and replace it yourself.

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I think I will try to re solder the connector first, when I find what it is. I’d rather do that first for $5 than pay $80+ to replace the board. Plus soldering isn’t that hard and I have the supplies