Re: P2317H not turning on
1. Strange thing is that acoring to datasheet the VIN should be voltage higher than 4 Volts, and its is 1.2V also, so how is the regulator even working?
Is it possible that it is not and the 1,2volt is coming from somewhere else and it only would go up if button is pressed and something gives more power to VIN?
Also VIN and LX is not sorted.
Readings to ground are:
- Pin 1: 1.5K
- Pin 2: GND
- Pin 3: 1.5K
- Pin 4: 1.5K
- Pin 5: 8,2K
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Re: P2317H not turning on
Find a "1MHz 1A Synchronous Step-Down Regulator"
According to Datasheet the equasion is good and the output should be 1.2v indeed,
Because Vout=0.6V*(1+(163K/163K))=0,6v*(1+1)=1.2V So this seems fine.
So my thinking is like this: If the powerbutton pressing drops voltages to 0 for a second then something else must be not switch on.Attached FilesLast edited by questore; 05-27-2022, 12:33 PM.Leave a comment:
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P2317H not turning on
Hi Everyone,
I have a problem with my dell P2317Hb
No reaction to power button press.
Boardnumber:
L3101-1M
48.7AA02.01M
No schematic or boardview found yet.
Power supply board itself looks good, 5v Is present on the wires that goes to secondary Logic Board. As soon as i connect the to boards then this drops to 1.4v.
1.4v also present on the power button sideboard, and when I press the button, voltage drops to 0 then comes back but nothing happpens. Checked all wires no broken found.
Can anyone help me trace what could be the problem?
Thanks.Attached Files -
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I have a post on psx-place for this but thought I'd try here as well in case anyone has experience or the schematics or any kind of help. Here's the original post from psx-place:
START
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Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
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The motherboard is HS460 HS560 HS760 NM-D471 Rev: 2.0
S/N: PF3Q0WTF
The motherboard is not mine, also there were corrosion on the board which I cleaned.
Methods of fixing like fully turning off the motherboard or starting only with adapter doesn't work. All testing were did only with adapter on.
...06-07-2025, 02:40 AM -
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