Ps4 smps

[MOSFET606]

Ok, as the title suggests this the SMPS found from a PS4

Here's a little run down

I have 2 PS4s

One system boots up, the other attempts to turn on and the quickly shuts down, SMPS ISSUE

The good power supply keeps both systems on.

Next

I'v measured the voltages across both SMPS, by manually turning them on

12 11.85 on both units
5v ~4.7 on both units

I can't seem to see what's the problem here with the bad supply...

Current issues?

[stj]

Re: Ps4 smps

attach some foto's

[MOSFET606]

Re: Ps4 smps

It doesn't seem to be the typical SMPS, with a main Mosfet, it has several.

I'v metered a bunch of components nada, everything looks fine

I was hoping when I powered it on, it would show a low on one of the rails, but their identical pretty much and probably within specs.

I looked into the optocouplers and found them on mouser or digi pretty much saying their low quality and not recommended way to go sony...

Maybe its the feedback circuit, and PWM.

Was wondering if anyone else has seen this on a SMPS giving out proper voltages, and why a system would reject it.

I'm no Novice but here are the photos, nothing obviously blown...

But i dont know SMPS that well, I have a good understanding

Any suggestions on locations to meter while the power is on to find out whats wrong would be great... Going to check the PWM

[stj]

Re: Ps4 smps

it looks like it has 2 psu's and a pfc circuit.
the problem may be the pfc circuit.

next time use jpg btw, then the images will show in your posts.
what's on the bottom of the board?

[MOSFET606]

Re: Ps4 smps

I'm not exactly sure whats on the bottom, except for the optocouplers for sure.

IF your talking about the white thing sticking from under, that would be a pizza crumb...


Are there 2 PFC circuits on the bottom of the board, one for High and Low side?

[MOSFET606]

Re: Ps4 smps

I'll get the chips listed, the little one on the topside 8 pin guy, is power control chip...

Thing i dont understand is that the voltage outputs are correct...

[MOSFET606]

Re: Ps4 smps

Bottom Side

4 little chips are DAS09, for signal conditioning

One on the high side is DDA001AG Can't find much out about this chip... except its on EBAY

Lower side is DNP012A having problems getting specs of this chip as well

And on the top side, a DNP015


Going to power everything back up and check their pins, atleast the ones i can get specs for and compare them with the good supply.

[MOSFET606]

Re: Ps4 smps

Took voltage measurements all the chips measured the same

[stj]

Re: Ps4 smps

well i'm not seeing any foto's
i'm wondering if the pfc circuit is running - it boosts the incoming voltage.

[CapLeaker]

Re: Ps4 smps

try swapping the power supplies around? Did you measure the PSU under load?

[MOSFET606]

Re: Ps4 smps

-STJ -

All the photos so far are in my second my post.
I'm going to take measurements again, and do better documentation on it.
I think the PFC is running, i measured the same voltages on both the good and the bad.

-CapLeaker-
That's how i know one of the power supplies is bad, one PSU worked in both of the systems.
I haven't measured the PSU under load, and would rather not atleast within the PS4/ connected to the Mainboard. Was wondering about doing this but dont know what load/ ohm i should apply to it.

[stj]

Re: Ps4 smps

measure the voltage on the 2 big caps.
be carefull not to short the pins aganist that heatsink because it could be upto 400v