CR-10 Was Printing Fine - But Now Won't Power Up

[Redbrickman]

Good news, I have always found them quite helpful, one of the better suppliers from that neck of the woods.

 

[Nifty]

I would guess that the printer is tripping the PSU's overcurrent protection when the printer is warmed up.

@berttheghost , guess what... you may actually be onto something!

Since I'm able to turn the printer on if it's been sitting for about 1/2 an hour, I decided to run a print. Well, after the successful print, I noticed the bed was SUPER hot... which is weird because the target temp is set to ZERO.

So, my bed is heating up on it's own. Not sure if that's a related problem to my printer not turning on, or just another problem I'll need to now deal with.

 

[ninj]

There is a problem either with your wiring from your heated bed to the board with the board itself, such a MOSFET that has failed short. Either way, physically disconnect your heated bed and see if that cures the problem.

 

[Nifty]

physically disconnect your heated bed and see if that cures the problem

Yup, that was the first thing I did, but I'm still having the same problem: Once turned on (either for 1 second or 10 hours printing) once turned off, it won't come back on until I let it sit for about a half hour.

 

[stratman]

When does you new control box come?

 

[Nifty]

When does you new control box come?

Ah... well, I changed things up a bit.

They offered to send a replacement... it was going to take about 30 days from China, and then offered to send me a credit back to Paypal for $25.

Since I saw way better quality ATX power supplies (that people convert to use for 3D printers) on Amazon, I decided to just go with one of those vs. waiting 30 days for another potentially crappy power supply from China.

Here's the power supply coming tomorrow: http://amzn.to/2wcxjUC

It won't fit inside my control box, but I'm not too worried about that since I'll probably put my printer up on legs and put the control box and power supply underneath the printer.

(also, the current power supply is sometimes working... as long as I don't turn off the printer)

 

[stratman]

Your decision tree parallels what I read before. I think it is a smart move if you like to tinker.

For a guy who said he didn't want to get too hands on in building a printer, you sure have gone deep into the rabbit hole!

More power to ya! (pun intended)

 

[Nifty]

For a guy who said he didn't want to get too hands on in building a printer, you sure have gone deep into the rabbit hole!

so.very.true


Well, seems that the bed heating issue was either a fluke or something else because I'm not seeing the problem again with the stock PSU.

 

[Nifty]

Regarding the main problem: Yup, it's definitely a wonky power supply / PSU! I pulled an ATX PSU out of an old computer and (after disconnecting the bed heater since the PSU doesn't have the amperage for that) I plugged the motherboard directly into the PSU and everything works fine.

One thing I realized during this process: If I had my ATX PSU already plugged in and running, and then tried to connect it to the board (I was using my multimeter in series to check amperage), my ATX PSU would shut off. I guess too much amperage was used while connecting in this way? If I hooked the non-powered ATX PSU to the controle board and THEN plugged the ATX PSU in, everything worked fine.

 

[stratman]

If I had my ATX PSU already plugged in and running, and then tried to connect it to the board

Do you mean the power supply was supplying power to the motherboard as you plugged in the motherboard? I would advise against that scenario to prevent damage or injury.

Glad to hear you are p and running again. Safety first!