ASUS PRO50G Won't Turn On

Batmann77

Honorable
Dec 2, 2013
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10,510
Hi everyone,

A friend of my Mother is having this issue with her laptop, so me knowing a little about computers, I got tasked with fixing it.

Laptop Specs

Model: ASUS PRO50G
Date Of Manufacture: 2009
Processor: Intel Pentium T3400
RAM: 3GB
Hard Drive: 320GB
Operating System: Windows Vista Premium

Problem: User said that she was having troubles with the battery draining rather quickly and admitted she needed to get a new one. Anyway, she always had it plugged in at the wall socket via the charger. One day, she went to use it and it wouldn't turn on. She noted that the power lights that usually come on, didn't come on either.

Tests:

- I've been able to confirm that it does not turn on, and no lights come on at all.

- The green light on the charger brick is lit, so I assume that is not the problem.

- There's nothing visibly wrong with the plug end of the charger that goes into the laptop, nor the socket on the laptop itself.

- I have tried the common method of holding down the power button for 30 seconds with the battery out, and the charger plugged in, but still nothing. I even tried having the battery in and the charger disconnected, and also both connected at the same time - still nothing.

- I tested the laptop's hard drive in my own computer, and there is nothing wrong with it. All the data is still there. Mind you, I was not able to test if the operating system was still functional.

The only things I can think of, is to replace both the charger and the battery, though I wanted to ask here if there were any additional things I could try, or if anyone else has experienced anything similar.

Thank you for your time!

Kind regards,

Jimmy.



 
Solution
I can tell you now that some Asus models of laptop have a problem with the harness power jack that you plug into the side, or back side of the laptop depending on the model.

There is a known problem where the wires that are internal to the laptop from the jack become broken or snap after a lot of movement, stress and age on the jack it`s self.

This would involve taking apart the laptop of course to inspect it is the case, it is though quiet common.
Since the jack uses two 12v + power feeds and two Minus or negative wires fron the jack to a mini molex connector that plugs into the laptops motherboard.

You can get a new jack plus the wire harness with molex end off E-bay for about £3 if the wires are frayed, snapped or broken off the...

Shaun o

Distinguished
I can tell you now that some Asus models of laptop have a problem with the harness power jack that you plug into the side, or back side of the laptop depending on the model.

There is a known problem where the wires that are internal to the laptop from the jack become broken or snap after a lot of movement, stress and age on the jack it`s self.

This would involve taking apart the laptop of course to inspect it is the case, it is though quiet common.
Since the jack uses two 12v + power feeds and two Minus or negative wires fron the jack to a mini molex connector that plugs into the laptops motherboard.

You can get a new jack plus the wire harness with molex end off E-bay for about £3 if the wires are frayed, snapped or broken off the rear jack end solder points at the back of the jack internal to the laptop.
The model range was extensive, and later versions had the jack soldered direct to the edge of the motherboard, but still suffered from cracking of the solder joints on the underside of the laptop motherboard also.

I cannot rememberer if the PRO50G was a soldered edge power jack sorry to say but it as well as the other was more often the cause of a lack of power or the laptop not turning on with the power brick connected to it ok.
 
Solution

dark_lord69

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Jun 6, 2006
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19,010
Sounds like you kinda tried this already but...
1. take out the battery
2. press the power button once (not holding down for 30 seconds)
If it does not come on, I doubt there's an issue with the battery.

I would try replacing the laptop's cord (aka power cord, power cable, power brick etc)

Also, typically when you plug in a power cable to a laptop a light turns to indicate the battery is charged or currently charging.

Lastly I wanted to mention the post from "Shaun o" is a likely cause. My sister had a laptop with a power connector that seemed fine on the outside but was broken inside. I had to order some parts from eBay and replace her power input jack.
 

Batmann77

Honorable
Dec 2, 2013
7
0
10,510
Thank you both for your replies.

@dark_lord69 - I have indeed tried simply pressing the power button without the battery installed, but still the same results.

@Shaun o - This sounds like it could definitely be the cause of this power issue. I tried taking the laptop apart the other day, but I couldn't get the back of the unit off. I have removed all screws from the underside of the laptop and taken the keyboard out and removed the screws underneath it, but it still doesn't want to come off. Can anyone tell which screws I still need to undo? I'm pretty sure the screws i have circled are NOT the ones i need to undo. It feels like something is catching under the area highlighted in green.

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