Modern Asus gaming laptops even have a center pin for identification. As always, must try with known good genuine power supply with correct power rating before troubleshooting board.
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OpenBoardView — https://github.com/OpenBoardView/OpenBoardView -
I thought it was right and proper to inform the people who dedicated part of their time to help me (@mon2) that the problem was the power supply, which had to be original. Once the power supply was recovered, the laptop started normally. Thanks to everyone for the help and especially thanks to mon2Comment
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Hi everyone,
Brought a non functionnal PS5. Apparently only a bad PSU...
No beep, nothing.
After some tests i found this :
- PSU is fine (12 volts stable)
- 12 volts line is shorted
- DA9065 was fried, F7003 also => Replaced both of them, short is gone on 12 volts line, no dead short anywhere else.
- By the way, nothing change. No signal, no power, no beep.
Mesuring all rails with my workbench psu (12 volts input)
- 0.00 amp drawing
- 12 volts, 5 volts, 2 volts, 1,15 volts are presents (suppose new DA9065 do is... -
Hello I have an ASUS Zephyrus Laptop (Model GA401QM), bought on ebay and the previous owner claims he was using and the laptop stopped, He then tried to change battery and broke the connector on the battery and also on ripped a GND pad on the MB.
I was searching on internet and found two posts on this forum about a similar problem “ASUS ROG G14 (GA401) battery spark, dead.” and “Dead ASUS ROG G14 (GA401)” both by the user jacobtc.
I already made some measurements based on the “Dead ASUS ROG G14 (GA401)” post using GA401QM schematic provided here and Boardview provided... -
Good day to all. The bite alarm drains 9-volt Krona batteries. Current consumption when switched on is about 50 mA. I wiped the board from oxides, I will attach a photo (on the board there is a j3y transistor and a 7533 stabilizer, the microcircuit is erased = (the 3.3-volt stabilizer heats up weakly. I replaced it, nothing changed. I unsoldered the microcircuit, the consumption disappeared. The resistance on the pins of the unsoldered microcircuit from the point clockwise is more than 2 megaohms, the 11th leg is presumably ground. I warmed up the microcircuit, the consumption does not change....
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Hello,
Dell Latitude 5420 P137G
Board: LA-K491P REV A01
I have received this laptop which was described as "does not power on or accept charge." Battery shows no sign of charging when charger is plugged in, nor does the board show any signs of life when battery is unplugged and charger is plugged in. No light from the LED at all or any other indications of activity.
Board seems to have no shorts, all power rails are fine and show high resistance.
When charger is plugged in, voltage is present in 3.3V rail but absent in others.... -
I have this 10 amp 0 to 30 volt switching power supply that decided to have a 630 milliamperes draw on it at 0 volts
I open it up to find non brands name capacitors in it
I am not sure how this switching power supply is set up
Could someone please explain how this power supply works
Here is the capacitor ESR results
(1) 47uf@50 volts 0.46
(2) 47uf@50 volts 0.45
New 47uf@50 volts 0.35
(1) 100uf@25 volts 0.34
(2) 100uf@25 volts 0.35
New 120uf@50 volts 0.08
(1) 220@25 volts 0.13...
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