I have this Asus k43u PBL50 LA-7321P REV:1A, 19v is present but on power button and on JBTN1 pin 1 ON/OFFBTN# has 17v instead of 3.3v.on the bios chip there is no 3.3 on pin 8, anyone can help on this please
Asus k43u no power
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Re: Asus k43u no power
@Techtiger thanks for the response, replaced pq303 mosfet now no beeping on the pin1 and pin 4 and here is the measurement of RT chip pu301
pin 13= 3v
pin16= 19v
pin17=5v
pin14=2v
pin3=2v
pin8=3.3vComment
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Re: Asus k43u no power
the voltage on RT is fine what is the voltage on PL305?Comment
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Re: Asus k43u no power
PL303 Pullout 1 side= 11omhs PL305 pullout 1side =2.2ohms tried plugged in with 1 side pullout still no voltage on PL303 and Pl305Comment
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Re: Asus k43u no power
11 & 2.2 Ohms is very less can you check ENTRIP 1/2 it's connected to GND with 133k & 162K Résister make sure no leak & PQ307 pin 2/5 voltage check if PQ307 for any faultyComment
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Re: Asus k43u no power
I check pc305 is shorted beeping when i pulled it out same its beeping pc303 is not shorted, I cannot find same value on this cap on my scrapboardComment
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Re: Asus k43u no power
Problem solved!!! replacd PC305 laptop is now turns on and working fine @techtiger thank you for your helpComment
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