Solved Lights flicker on power up

Yesterday I smelled burned wiring when I turned on the R1+, but that went away and it ran fine. Today when I turned it on, the LEDs flickered on and off, and the fan speed varied, for about 10 seconds. Then it stabilized and has been printing fine. I anticipate some deterioration of the power supply or connectors. Is there anything I should check in advance of a more catastrophic failure?

 

Well that didn't take long. I ran a 4 hour print and shut down. Later today it's dead. So.... I can't see how to pull the power supply to test it. I don't see anything holding it in but the plastic tabs, but it won't budge. Is there a trick to sliding it out?

 

I unplugged the power connector and confirmed that the power supply is outputting no voltage. The 110 fuse is good. I'll still need to pull the power supply after I get a replacement. Any advice? Or advice on which PS to buy?

 

Got a new power supply from Amazon overnight. Installed and working again. But, the LED lights flicker a little, which suggests there is still an overload condition. Even if I turn off the heated bed, the LEDs flicker just a little, which I don't remember from before.

As for the old power supply, the inrush thermistor blew up. That was probably the burned smell a couple of days ago, and complete failure took another day. A new power supply is not very expensive, but a new thermistor is only $8.