Can anyone help me with what's written of that mosfets ?
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Re: LA-D704P rev 4.0 (HP 250 G5)
it is not readable in this photo. you should clean the Mosfet and read it under a microscope. -
Re: LA-D704P rev 4.0 (HP 250 G5)
I have the same motherboard
PQ1205 = 6428 (AON6428 30V N-Channel MOSFET)
PQ1206 = NIKOS PK632BA
The bold numbers are the actual number of the MOSFETs BUT you should be able to use other N-Channel MOSFETs with similar ratings irrespective of the number written on it. Use their datasheets to compare their ratings
If the MOSFET number:
ends with an even number, its usually N-Channel MOSFETs
ends with an odd number, its usually P-Channel MOSFETsComment
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Hi,
Finally got time to fix this board up.
At first it didn't give any POST codes. Turns out it was an unsupported Celeron D cpu. After dropping in an Celery 2.6gHz the CPU came out of reset with clock signal, but still no post codes. For a while it did work when I applied pressure to the ADP3168 chip, but on next reboot the MOSFETs started to burn. Then I left it as is for months.
Now I came back prepared. Replaced the bad MOSFETs and the ADPxx18k drivers. Now I don't get any MOSFETs blowing up issues anymore. But sadly, the Vcore is missing. The whole VRM isn't... -
I tried to use this method:
Testing an N-channel MOSFET:
Step 1: Discharge the Gate (turn off the MOSFET)
Place the black probe (COM) on the Source (S) and the red probe on the Drain (D). The multimeter should show no continuity (high resistance or "OL" – open line).
Then, touch the black probe to the Source (S) and the red probe to the Gate (G). This discharges any stored charge in the Gate, turning the MOSFET off.
Step 2: Charge the Gate (turn on the MOSFET)
Now, place the red probe on the Gate (G) and the black probe on the...09-27-2024, 03:31 AM -
Hi, Im having a similar problem with my Acer Nitro 5 AN517 52, took it to repair and they said that the problem was a burned mosfet wich has written on top "I6 GUE 8v1507".
There is written PQB12 on the motherboard right next to it.
Does anyone know if there is soemthing similar I can buy to replace it with?
Seems impossible to find theidentical mosfet online. -
Hey guys,
i have a asus motherboard here and as the title says after the first mosfet (in the picture) there is nothing more than 3.15v.
I injected 19v and max. 1 amp at the charging port and there is not voltage drop or smth. It's just taking 19v and 1 milliamp.
Then i tried to inject 19v and max 1amp after the current sensor and there it first takes 19v and 4 milliamps and after 2 seconds it is taking nothing (no current).
I measured on the coils on board everything seems fine. Also the main power rail is not shorted (infinite resistance).
Now i thought something... -
The board number is GU502DU. I repaired this a couple weeks ago and it came back with the same issue, same mosfet failed (PQH9201). I'm hoping that the GPU was spared this time.
I used the same replacement part (purchased from Mouser) and I'm certain the soldering was done properly since it took just as much effort to remove as before. What could cause this same mosfet to fail? I'm thinking if it was unsuitable then the others would fail too. I looked for similar failures on YTube and the mosfet was replaced with AOE6930 in one instance and AOE6932 in the other but it's possible that the...
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