PS4 pro PSU (ADP-300FR) shuts down when turning on 12V

[sam_sam_sam]

Re: PS4 pro PSU (ADP-300FR) shuts down when turning on 12V

https://www.youtube.com/watch?v=sx0oBXsueFk

Hope to help u

Well done video

[psina]

r99 =10k,,zener = 5d-7 (zener 7v?)

[Fico_m1]

Hello, I have a power supply PS4 PRO model ADP-300FR.
The part around the fet is gone, I'm wondering if anyone has a picture of this part of the power supply to see the resistor R99 and diode D63 markings?
Thanks a lot.

[sam_sam_sam]

Re: PS4 pro PSU (ADP-300FR) shuts down when turning on 12V

https://www.youtube.com/watch?v=sx0oBXsueFk

Hope to help u

Thanks for sharing this video information very informative

[Master it]

Re: PS4 pro PSU (ADP-300FR) shuts down when turning on 12V

https://www.youtube.com/watch?v=sx0oBXsueFk

Hope to help u

[Norrecito]

Re: PS4 pro PSU (ADP-300FR) shuts down when turning on 12V

The IC has finally arrived and I had some time to replace it.

The results are amazing, the PSU now works perfectly and even the PS4 starts with it. It displays an image mentioning that it could not find the storage. The HDD is busted (because of the same fall that damaged the PSU), not even my PC recognizes it.

Thanks for the help guys, I could not done it wothout you!

[Norrecito]

Re: PS4 pro PSU (ADP-300FR) shuts down when turning on 12V

The mosfet can be shorted too, all those 3 pins (6,7,8) go through low ohm resistors to the mosfet.
Or are you confused with pins (8,9,10)?

Nice catch

I have noticed this yesterday but seems like my edit didn't go through.

The shorted pins are:
10 - pfcOK (5 ohms to GND)
8 - DRV (1.2 ohms to GND)
7 - GND

The MOSFET isn't shorted, I have desoldered and tested it before.

[lotas]

Re: PS4 pro PSU (ADP-300FR) shuts down when turning on 12V

The mosfet can be shorted too, all those 3 pins (6,7,8) go through low ohm resistors to the mosfet.
Or are you confused with pins (8,9,10)?

[Norrecito]

Re: PS4 pro PSU (ADP-300FR) shuts down when turning on 12V

I think I've finally found the problem!

The PFC controller IC (IC41 - "NCP1612A3") is shorted.

The following three legs of this IC are connected together (resistance is less than 5 ohms):
7th - GND
6th - DRV
8th - pfcOK
...and I don't think they should be.

I can buy this chip online but it will take at least a month to arrive.

It's also glued down so I have to be extra carefull when removing it.

I will report back with the results

[stj]

Re: PS4 pro PSU (ADP-300FR) shuts down when turning on 12V

check the pfc fet(s) & diode for shorts

[Norrecito]

Re: PS4 pro PSU (ADP-300FR) shuts down when turning on 12V

There isn't much progress I can report. Still trying to figure out why the power is cut when I try to turn on the 12V.

In standby mode, the PFC IC (IC41 - "NCP1612A3") has no power on the VCC leg. (0V) When trying to turn on 12V, it has something for a fraction of a second but the PSU turns off before I can measure it with the multimeter.

Also measured the output of "T2" on the low voltage side to see whether I have 12V for a short time after trying to turn on the PSU but nope. Nothing there.

I'm still not sure which IC cuts power and why. PFC is not running but I'm kind of stuck why. Would love to narrow the issue but I don't have the knowledge to do so.

Made a note of the ICs on the board. Maybe someone will find this useful in the future:
IC31 is "DAP046"
IC32 is "DAP049"
IC41 is "NCP1612A3"
IC101 is "MP6922L"
IC155 is "DNP012AH"

[Norrecito]

Re: PS4 pro PSU (ADP-300FR) shuts down when turning on 12V

Is that a scratch or a hair ? Is it cutting the traces ?

Nope, it's from the brush I have used to clean the flux

Scanned the board using my microscope and didn't find any micro cracks.

Just seen a video where the PFC circuit was faulty and indeed, having a fault in the PFC section could cause the issue I currently have.

The problem is I'm kind of lost regarding the PFC section.

When comparing it to the schematics of the other PSU (the only schematics I currently have), it has a different IC with a different pinout. Even the huge coil (L1) has some differences and with this many small SMD components, it's hard to know what supposed to go where.

The IC that drives the section is "NCP1612A3" (IC41). I've found the datasheet and attached it to this post.

[diif]

Re: PS4 pro PSU (ADP-300FR) shuts down when turning on 12V

Is that a scratch or a hair ? Is it cutting the traces ?

[Norrecito]

Re: PS4 pro PSU (ADP-300FR) shuts down when turning on 12V

Well, if the power does not rise, then the PFC does not work, there may be a microcrack on the board, look at large, power elements.

I will.

The schematics I've attached (in my first post) has a PFC section, not identical (as it is for a different PS4 PSU) but similar. I might be able to use that to know what components should be checked.

[lotas]

Re: PS4 pro PSU (ADP-300FR) shuts down when turning on 12V

Well, if the power does not rise, then the PFC does not work, there may be a microcrack on the board, look at large, power elements.

[Norrecito]

Re: PS4 pro PSU (ADP-300FR) shuts down when turning on 12V

Okay I have borrowed a multimer and made some measurements on the high voltage capacitors.

When the PSU is running in standby (= no pins on the small connector are connected), the big caps have 317V.

After trying to turn on the PSU (by connecting the pins), it stays at 317V...so either the PFC is not working or it is just not turned on in the first place?

[Norrecito]

Re: PS4 pro PSU (ADP-300FR) shuts down when turning on 12V

You checked that the PFC works for you, when you turn on 12v, the voltage on the large capacitors should increase by about DC 400v. If the PFC does not work, then the protection will work and the power supply will turn off completely.

Yes, I wish I could test this but all 3 multimeters I have at home could only measure up to DC 300v Even with the PFC turned off (when the PSU is only running in standby), those caps are over 300v.

I might be able to borrow a multimeter that measures up to DC 1000v and test this.

[lotas]

Re: PS4 pro PSU (ADP-300FR) shuts down when turning on 12V

You checked that the PFC works for you, when you turn on 12v, the voltage on the large capacitors should increase by about DC 400v. If the PFC does not work, then the protection will work and the power supply will turn off completely.

[Norrecito]

Re: PS4 pro PSU (ADP-300FR) shuts down when turning on 12V

thats the overload sensing - so thats a good area to be inspecting

Okay, I will check that section under a microscope tonight.

In the meantime, I have to correct myself:
The second track goes to the 4th leg of IC151 from the mentioned diodes through a 10 ohm resistor. The 12th leg iof that IC s GND

[stj]

Re: PS4 pro PSU (ADP-300FR) shuts down when turning on 12V

thats the overload sensing - so thats a good area to be inspecting