no power in laptop

peppagirl

Hi all, just wondered if anyone could help me with a problem with my laptop.

A few weeks ago, I went to switch it on and nothing happened, nothing at all :sad: so I check all the connections to the power supply, all fine. I then tried a new psu, still nothing :sad: Not wanting to be beaten by a laptop, I bought a new daughterboard with a new dc socket (I got the whole daughterboard as the socket was soldered on and I am rubbish with the soldering iron) fitted it and put it all back together, still nothing at all, not even a flicker :sad:

Is there anything else I can try before I admit defeat?

PG x

Trinitrotoluene

Hi peppagirl,

I don't mean any offense by this but to start with, it is not the daughterboard it is a motherboard. If you don't know what you are doing with a soldering iron and you have been messing with the dc jack you have the potential to wire it incorrectly and cause major damage to the laptop and or person that is using it.

CoolHotCold

Trinitrotoluene wrote: »

Hi peppagirl,

I don't mean any offense by this but to start with, it is not the daughterboard it is a motherboard.

Sorry, but a laptop is not one single slab of PCB, it is usually made up of several components one and the largest one is the MotherBoard, and you get several minor (or Daughter) boards which join on. DC jack, USB ports and headphone jacks are usually on these separate PCB ports.

peppagirl

Trinitrotoluene wrote: »

Hi peppagirl,

I don't mean any offense by this but to start with, it is not the daughterboard it is a motherboard. If you don't know what you are doing with a soldering iron and you have been messing with the dc jack you have the potential to wire it incorrectly and cause major damage to the laptop and or person that is using it.

Did you even read what I had written? No offense but I do know the difference between a motherboard and a daughterboard, I just replaced the daughterboard as that is were the dc socket is mounted. Thank you for your concern though, I think.

PG

Trinitrotoluene

CoolHotCold wrote: »

Sorry, but a laptop is not one single slab of PCB, it is usually made up of several components one and the largest one is the MotherBoard, and you get several minor (or Daughter) boards which join on. DC jack, USB ports and headphone jacks are usually on these separate PCB ports.

That is usally something additional (like an expansion card for example). The DC jack on a laptop is (I am assuming) something that has been there since manufacture and is part of the motherboard. Semantics aside, I still say that if you don't know what you are doing when soldering, you should not be messing with areas that are responsible for current and voltage regulation

peppagirl

Trinitrotoluene wrote: »

That is usally something additional (like an expansion card for example). The DC jack on a laptop is (I am assuming) something that has been there since manufacture and is part of the motherboard. Semantics aside, I still say that if you don't know what you are doing when soldering, you should not be messing with areas that are responsible for current and voltage regulation

The DC socket is on a daughterboard that is just screwed on to the motherboard, as i said in my original post, I did not solder anything!

Trinitrotoluene

peppagirl wrote: »

The DC socket is on a daughterboard that is just screwed on to the motherboard, as i said in my original post, I did not solder anything!

That's fair enough then! I obviously need to learn to read better Just out of interest, what is the model of laptop? Have you tried it without a battery in at all? Any lights at all on the laptop when you plug it in?

peppagirl

Trinitrotoluene wrote: »

That's fair enough then! I obviously need to learn to read better Just out of interest, what is the model of laptop? Have you tried it without a battery in at all? Any lights at all on the laptop when you plug it in?

Its an Acer 3680. Its completely dead as a dodo, not even a flicker :sad: Still nothing with the battery removed and just connected up to the mains. I guess I need to see if i can borrow a charged up battery from somewhere, if its still dead then I will just have to accept the motherboard is fried. (it looked fine by the way but I guess it could still be fried.)

PG

CoolHotCold

Check the USB ports
They carry a 5V current and if the pins are touching the sides it will short circuit the system causing no power.

peppagirl

CoolHotCold wrote: »

Check the USB ports
They carry a 5V current and if the pins are touching the sides it will short circuit the system causing no power.

Do I just look at them to see if any of them seem to be touching or do i need a multimeter to check?

PG

CoolHotCold

peppagirl wrote: »

Do I just look at them to see if any of them seem to be touching or do i need a multimeter to check?

PG

no you can see by using your eye.

So long as the 4 pins are straight and uniform and not touching the sides you're good.