Asus k52f short

[mcplslg123]

Re: Asus k52f short

Good flux can make some difference but it is the skill which is more important to avoid solder joints between pins of smaller IC's

[diif]

Re: Asus k52f short

Genuine Amtech 559.

[SMDFlea]

Re: Asus k52f short

Genuine Amtech 559.

Yes get genuine 559, watch out theres lots of fake stuff on ebay, buy it from here: https://www.ebay.co.uk/str/insatinternational

Edited to add ,i have no affiliation with insat whatsoever other than being very happy with their products.

[Stevie2001]

Re: Asus k52f short

Thanks diff and smd

[Stevie2001]

Re: Asus k52f short

i think thier maybe short on j6802 pins am looking
BAT54C SOT-23 PHILIPS

[Stevie2001]

Re: Asus k52f short

found another short please give me advise how to track this maybe using heat method or anything.

all legs on transistor D2701 short
part D2701 on boardview

now i did not get this transistor out yet because the nearby caps also show sign of short to.
C2702
C2701
D2701

can it be
Q9101
Q9104
check attachment
or is this normal?

[Stevie2001]

Re: Asus k52f short

My ITE is here will put it on.
Am worried about post 26 is this normal or what

[Stevie2001]

Re: Asus k52f short

the ITE ic well inserted.

now the problem was with
UM6K1N causing short.

thats what this ic does look at the boardview parts.

when i connect the dc power supply get short.
when i removed this mofset and used dc power supply again short gone and green light i have.

now my question is this mofset is here for a purpos i cant just leave it out, why is this getting heated up and causing a short.

what are the marking on this type of mofset so i can se if i can salvage more.

[SMDFlea]

Re: Asus k52f short

You already have the part number, UMK61N ,just google it and get the datasheet and other info. The top case marking is K1 . Look on the boardview and click on each pin of the UMK61N, it shows what each of those pins are connected to. Pin 2 is connected to R5614 and pin 24 of the KBC that you`ve just replaced. Pin 3 is connected to parts on BOTH sides of the board (wifi LED) . The part is heating up because its burnt as it shows on one of your pictures. Replace it .

[Stevie2001]

Re: Asus k52f short

You already have the part number, UMK61N ,just google it and get the datasheet and other info. The top case marking is K1 . Look on the boardview and click on each pin of the UMK61N, it shows what each of those pins are connected to. Pin 2 is connected to R5614 and pin 24 of the KBC that you`ve just replaced. Pin 3 is connected to parts on BOTH sides of the board (wifi LED) . The part is heating up because its burnt as it shows on one of your pictures. Replace it .

seems like a UMK61N gets heated and now i remove it, the green light comes on but unable to power up still , and the resistor near the UMK61N gets heated while it shows 19v 0.04amps short.

the problem is defo elsewhere and UMK61N or other resistor IEEE is taking the beat.
i replaced it with another k1 and it heats up.

am now starting to think it maybe
PWM CONTROLLER RT8206AGQW RICHTEK WQFN-32
PIN3 P_5V3V_VCC_20 short with gnd
PIN7 +5VAO short with gnd
pin19 +5VAO short with gnd
pin25 P_3VSUS_LX_40 short with gnd
pin30 P_3VSUS_VO_10 short with gnd

showing signs of short with gnd.

part D2701 on boardview tested the transistor all 3 leg joints short.
is their a way i can inject voltage can you tell me where so i can locate it quicker

[Stevie2001]

Re: Asus k52f short

[SMDFlea]

Re: Asus k52f short

https://www.ebay.co.uk/itm/Richtek-R...sAAOSwBLlVTkwF

[SMDFlea]

Re: Asus k52f short

You already have the part number, UMK61N ,just google it and get the datasheet and other info. The top case marking is K1 . Look on the boardview and click on each pin of the UMK61N, it shows what each of those pins are connected to. Pin 2 is connected to R5614 and pin 24 of the KBC that you`ve just replaced. Pin 3 is connected to parts on BOTH sides of the board (wifi LED) . The part is heating up because its burnt as it shows on one of your pictures. Replace it .

I can`t edit my post ,got it wrong sorry,i`d left the reference schematic open and looked at that instead of the boardview.
Test R5618 it should be 10K ohms

[Stevie2001]

Re: Asus k52f short

I changed ic found from another board stil short.
The transistor i mention about that had 3 leg short 1 leg goes to
C.S BD82HM55 904127 INT IBEXPEAK HM55 SLGZS



I think its a gonner unless there is a way to find the short

[SMDFlea]

Re: Asus k52f short

It also connects to C2738 and R2706 on the other side of the board. Take D2701 off and test the pins again for short.

[Stevie2001]

Re: Asus k52f short

It also connects to C2738 and R2706 on the other side of the board. Take D2701 off and test the pins again for short.

Ok bro thanks for taking the time to reply il check and get back.

D2701 already out all 3 pads short.
I may have to open each leg from the pads to resistors on the backside thats connected to this their are 38 or more connected

[Stevie2001]

Re: Asus k52f short

C.S BD82HM55 904127 INT IBEXPEAK HM55 SLGZS
even in shorted pads i set voltage less then 1v and 0.79amps this ic gets heated seems like am out of luck to fix this.

[SMDFlea]

Re: Asus k52f short

It will measure very low ohms to gnd.

[Stevie2001]

Re: Asus k52f short

Any suggests as you can se the image above of boardview it has all connected parts.

[SMDFlea]

Re: Asus k52f short

Just uploading a picture of openboardview in use ,so you can see the difference between it and boardviewer.