Creality 3 printer switching power supply recapped

[sam_sam_sam]

I decided to recap this power supply before using my second 3D printer

[stj]

Re: Creality 3 printer switching power supply recapped

that's a nice oldskool design, even a fiberglass board!

[sam_sam_sam]

Re: Creality 3 printer switching power supply recapped

I am glad you comment about the quality of this switching power supply

The only complaint I have about this board is that 3 output caps mounting holes are little bit off in the hole size couple of were a little bit over sized

[sam_sam_sam]

Re: Creality 3 printer switching power supply recapped

Update

Ran power supply on the filament heater ( about 2 amp draw ) for over 24 hours every when well

I also modified the switching power supply and added a power supply jack for the filament heater and relocated the indicator LED to the incoming power supply housing where I can this light

One note I have to modify the Ender 3D bed heater controller output because once it gets to temperature it cycles way to fast and plays hell with my battery backup for my computer and 3D printer this heater draws a lot of current when on I go to add a PWM controller to the bed heater and back down the current until the temperature cycle is more reasonable

[momaka]

Re: Creality 3 printer switching power supply recapped

that's a nice oldskool design, even a fiberglass board!

It is.
Classic H-bridge with KA7500. Pretty reliable when designed right.

I wouldn't trust the label worth a damn, though.
15 Amps at 24V? That's 360 Watts. Even at a super-optimistic 85% efficiency (which I doubt this Chinese thing will ever do), the PSU should be drawing over 420 Watts from the wall. So those heatsinks and the transformer will need to be dissipating around 60 Watts total at that power. Do you see it happening? I don't, and even less without a fan. 6-7 Amps is probably a more realistic continuous rating.

The lack of real safety marks also doesn't inspire any confidence either.