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索尼的新一代电视游戏机，于2013年2月20日发布，并于2013年11月15日开售。

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PS4 not turning on, power supply already changed

Dear all,

I bought on the Internet a broken used PS4; the owner told me that he went on vacation and, after 2 weeks, the console wasn’t turning on and so he decided to sell it.

The console was never been opened and so I decided to try and change the power supply with a good working one. The console still doesn’t turn on and it won’t beep even shorting the “pad“ on the mainboard with a screwdriver.

Considering that there is not any schematic document for the PS4 on the Internet, would you please help me identify the problem and maybe tell me where should I begin to check things at component-level?

Thanks in advance.

Roberto

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The power plug is fine and fine are all the cables that plug into the mainboard.

I also think it's something with the mainboard, I would like to know if I have to check some capacitor/resistance in particular to see if something is shorted to ground.

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Most common issue is the power supply that stopped working (if it’s not booting up), but you replaced it already.

I think the motherboard is broken to be honest. Did you checked the power plug at the backside? All OK there ?

You can also check if a capacitor became faulty on the motherboard.

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The power plug is fine and fine are all the cables that plug into the mainboard.

I also think it's something with the mainboard, I would like to know if I have to check some capacitor/resistance in particular to see if something is shorted to ground.

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Do you know the exact type of your motherboard ? (example: SAB-001). And also don't forget to check the 2 pins (for the PSU) on the motherboard and the 3-4 pin connector for the power supply. You can measure if power is coming in.

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Also measure if the two big pins for the PSU are shorted to ground from a continuity test.

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Hi, sorry for the late answer; the mainboard is a SAB-001 and yes, 5V are coming out on the connector on the mainboard and the 2 probes are NOT shorted to ground. Since there are no schematics available on the web, do you have some more suggestion? I tried measuring some components with the PU plugged in and I can measure 3.3V on some components but I have no clue what they are and what's their function...

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SAB-001 information: http://finalmans.blogspot.com/2018/05/po...

And scroll down to go to the PS4 selection.

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