Laptop doesnt charge at all.

[DassinDamon]

Hi there guys! Im new here i have major problem with my laptop not starting up..
So first of all, one day i was lying in bed, when someone pulled my Power supply cable and my power socket went up by 45 degrees upward, then laptop restarted itself it was still plugged in, windows said the power is plugged in, but not charging the battery, so i looked into the computer and saw my power socket was damaged, so i changed it.

When i plug my laptop, nothing happens, not even charging LED flashes.

The laptop is Lenovo G500S.

PSU Output is 20V.

I checked voltage on motherboard and it was 20,5V.

Can anybody help me out here?

 

[jarotech]

Hi, maybe you've burned the fuse, check the voltages on both sides of the fuse PF101 on the motherboard.

 

[DassinDamon]

Hi, maybe you've burned the fuse, check the voltages on both sides of the fuse PF101 on the motherboard.

Sadly, it works.
Atleast i think i checked it right.

http/imgur.com/ThkWdms

This is the one, right?

 

[jarotech]

Yes, perform the same reading with PL101.

 

[DassinDamon]

Yes, perform the same reading with PL101.

It looks like it is alright too

 

[DassinDamon]

By the way, as far as i understand, laptop should work without batter, as long as it's plugged in, right?

 

[jarotech]

Yes, you can use the laptop without the battery, now read the voltages on pin 2 for the PQ301 chip and pin 6 for the PQ302 chip. If you look closely, you will notice on these two chips, the pins 1,2,3 are connected together, the same for the pins 5,6,7,8.

 

[DassinDamon]

Yes, you can use the laptop without the battery, now read the voltages on pin 2 for the PQ301 chip and pin 6 for the PQ302 chip. If you look closely, you will notice on these two chips, the pins 1,2,3 are connected together, the same for the pins 5,6,7,8.

Could you please picture me, which pins are which and... which electrode should i touch with which pin.
Are pins in these chips layed out like this?
http/imgur.com/tkkJq71

Original image: http/imgur.com/a/phLFa

I barely know anything about electronics

 

[jarotech]

Post the same image without the numbers, I'll mark them the right way.

 

[DassinDamon]

Post the same image without the numbers, I'll mark them the right way.

I gave it on previous reply, but here it is

EDIT: Which setting should i use? DC 200 or DC20?

http/imgur.com/a/phLFa

 

[jarotech]

Sorry, I did not click on it, thinking it was the first picture. You put the black wire on the ground, like you did before, you can use the ground on the DC connector (JDCIN1) it is pins 3 and 4. After you put the red wire on the pin 2 of the PQ301 chip, you should get around 20 volts DC. You do the same thing on the pin 6 of the PQ302 chip.

Here is the picture :

 

[jarotech]

You can use DC 200, but DC 20 will be more precise.

 

[DassinDamon]

You can use DC 200, but DC 20 will be more precise.

I used DC200.

At PQ301 it is 20,5V, just like on DC Connector.
But on PQ302, it is around 0.06V

EDIT: If it sparked, but still shows voltage it didnt make any damage, right?

 

[jarotech]

It depends from which pins you saw a spark. So, if you read the voltages on all the pins of PR301, you read around 0.06 Volt DC on all of them.

 

[DassinDamon]

It depends from which pins you saw a spark. So, if you read the voltages on all the pins of PR301, you read around 0.06 Volt DC on all of them.

The spark was just a side question, as i saw it come from DC (ground). Anyway isn't PR301 fuse?

http/imgur.com/a/PaKZb

Oh and do i check fuse same as pins on chips? with red on hotwire and black on DC ground then switching red to the other side of fuse?

EDIT: If the question was about PQ302, it all reads 0,6V
PQ301 reads 20,5V

So there's issue with PQ302, right?

 

[jarotech]

No, PR301 is a resistor, R for resistor, F for fuse, L for inductor, Q for transistor and what was the voltages on the resistor PR301?

 

[jarotech]

Yes, the transistor PQ302 may be defective.

 

[DassinDamon]

Yes, the transistor PQ302 may be defective.

PR301 reads 0,06V. Same as PQ302

 

[DassinDamon]

What are next steps?