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Re: Re: Acer Nitro 5 AN-515 LA-H501P Martwy
by Google Adsense [BOT] • 6 March 2025, 13:54
Sorry, but your pictures are not clear at all and are more or less useless for further diagnostics.
We are interested in a quality sharp picture of the marked area with clearly visible copper traces and vias on the board.
By the way, it's not necessary to post a picture of 1/4 of the entire board, we are only interested in the 5x5cm area, as marked with a yellow rectangle in post #22.
We are interested in a quality sharp picture of the marked area with clearly visible copper traces and vias on the board.
By the way, it's not necessary to post a picture of 1/4 of the entire board, we are only interested in the 5x5cm area, as marked with a yellow rectangle in post #22.
These pictures are better.
It seems there is a short circuit between the layers somewhere inside the PCB board.
Cut the copper trace on the board as shown in the picture below and remeasure the voltages to ground on both pins of resistor PR504. The board is multi-layer, so be careful to not cut too deep (cut the top copper layer only).
It seems there is a short circuit between the layers somewhere inside the PCB board.
Cut the copper trace on the board as shown in the picture below and remeasure the voltages to ground on both pins of resistor PR504. The board is multi-layer, so be careful to not cut too deep (cut the top copper layer only).
psikus123 wrote:Po podłączeniu zasilania na pin 12 PU502 pojawiło się 3,3VI didn't noticed that the resistor PR505 is also present on the board (it's actually a copper trace on the PCB).
So that means something is wrong with the signal line "MAINPWON". It pulls the line "5V_3V_EN" to the low state).
psikus123 wrote:Czy mogę montować PU502 i próbować uruchamianie płyty?Yes, you can, but the board will not work as the signal "MAINPWON" is interrupted now.
- Restore the cut copper trace - you can solder a 0Ω resistor to the place of PR505.
- Remove the transistor Q1 from the board and check if 3V is still present on pin 12 of chip PU502.
Re: Acer Nitro 5 AN-515 LA-H501P Martwy
by Google Adsense [BOT] • 7 March 2025, 13:33
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