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Shurigan
03-07-2017, 10:42 AM
Hi everybody, I hope that some of you fellow owners of this nice machine can help me with an issue I encountered recently.

I bought an Asus G750JZ - T4096H approximately 2.5 years ago.
The problem started few months ago. If I was playing a certain game without having the battery inside the laptop, it could happen that it suddenly shut down.
With the battery in instead I could just notice the brightness of the screen going down and then immediately up again, as if the charger was disconnected just for an instant. It was a rare event btw.

After few months it started to happen more frequently and for a longer time, also when I was not playing. The laptop did not "see" the charger for a couple of minutes and then it started working normally again, also for the entire day.

Last week it got much worse and now the laptop doesn't recognize the charger plugged in at all.
However, the small led on the charger is turned on.

I have seen some other topic where people encountered similar problems, but I haven't understood if in the end it was due to the chargers or to the laptop itself.
There is a way to understand it?

I'd like to avoid spending money on a new charger and then discovering that it was not broken.
If it's the laptop, how does it work with Asus? Would it be expensive to get it fixed by them? I guess that it's not covered anymore by the warranty.

Thank you guys! :)

Shurigan
03-08-2017, 11:02 AM
An update.

I contacted a local technician who told me that this is a common problem for these laptops and that according to him it is due to the motherboard.
He said that Asus charges 600-700€ to fix it and that they do not offer any guarantee on the product after.

Is that actually a common problem? What he says about Asus support's cost and policy is correct?
In any case I'll go to him to test the charger, hoping that's the issue.

cl-Albert
03-08-2017, 05:31 PM
You can search this forums or other forums to see how common of a problem it is, but don't remember seeing too many similar complaints on the ROG forums although my memory may not always be that great.

The problem could be caused by different things, so may take some investigating and if you could check with another adapter, it should give you a better idea of what is causing the problem.
Your G750JZ notebook uses the same 230W AC adapter as some other ROG notebooks like the G751JY, G751JT, G752VY, G752VS, and maybe others, so if you know a store or someone with any of those notebooks or chargers, you may want to ask if they will let you test it.
Many ROG notebooks like the GL502VS will also use the smaller 180w adapter which will not work for the G750JZ though, so be sure to check the model carefully if it matters.
In case there is a loose connection in the AC adapter wiring try to move it in different positions to see if it makes any difference.

It's also possible there is some problem with the DC Jack in the notebook, so you might also carefully put light pressure in different directions to see if that makes any difference and check if the DC jack is 'loose' or not.

Yes, if your notebook is no longer covered under warranty, ASUS repair will charge you to fix it and you may want to contact them to see if they can provide an estimate of the cost, but if they have not checked your notebook or are not sure of the problem/solution, they may not be able to give you an accurate price until you actually send the notebook to them. The prices and policies can vary by region, so you need to check with the local ASUS repair office and/or local ASUS support to confirm the details.

Hope this makes sense, and feel free to let us know if there are still any questions.

Shurigan
03-10-2017, 08:45 AM
You can search this forums or other forums to see how common of a problem it is, but don't remember seeing too many similar complaints on the ROG forums although my memory may not always be that great.

The problem could be caused by different things, so may take some investigating and if you could check with another adapter, it should give you a better idea of what is causing the problem.
Your G750JZ notebook uses the same 230W AC adapter as some other ROG notebooks like the G751JY, G751JT, G752VY, G752VS, and maybe others, so if you know a store or someone with any of those notebooks or chargers, you may want to ask if they will let you test it.
Many ROG notebooks like the GL502VS will also use the smaller 180w adapter which will not work for the G750JZ though, so be sure to check the model carefully if it matters.
In case there is a loose connection in the AC adapter wiring try to move it in different positions to see if it makes any difference.

It's also possible there is some problem with the DC Jack in the notebook, so you might also carefully put light pressure in different directions to see if that makes any difference and check if the DC jack is 'loose' or not.

Yes, if your notebook is no longer covered under warranty, ASUS repair will charge you to fix it and you may want to contact them to see if they can provide an estimate of the cost, but if they have not checked your notebook or are not sure of the problem/solution, they may not be able to give you an accurate price until you actually send the notebook to them. The prices and policies can vary by region, so you need to check with the local ASUS repair office and/or local ASUS support to confirm the details.

Hope this makes sense, and feel free to let us know if there are still any questions.Thank you for your answer.

I brought the charger to this technician, he tested it and said it works. He again told me that I'm the third person going to him with the same problem and it is due to capacitors/condensers (I don't know which is the right translation to english) on the motherboard.
It could still be the DC jack, but to test it I should just buy a new charger.

For sure I will get in contact with Asus support, but I wanted to understand if what he said he's resonable and above all what would be the best thing to do if it is. Especially considering that, as you said, they probably will not be able to give me many info before seeing the laptop.

If they really ask me 600-700€ to replace the motherboard, without any guarantee after the repairment, would that be reasonable considering that it's half the price of a new comparable ROG model and very close to the full price of a good non-gaming laptop? Is that a honest price for the replacement of a motherboard? Would it be better to get it fixed somewhere else?

Thank you!

cl-Albert
03-10-2017, 05:29 PM
For sure I will get in contact with Asus support, but I wanted to understand if what he said he's resonable and above all what would be the best thing to do if it is. Especially considering that, as you said, they probably will not be able to give me many info before seeing the laptop.

Unfortunately, I don't work too closely with repair, so you probably want to check with your local ASUS support and others to get a better idea if the store technician is correct or not.
In the U.S. ASUS repair will normally provide just 3 months warranty for only the items that were repaired out of warranty, so you might hear something similar when you contact your local ASUS support, but I'm not sure what they will say.

Yes, if you decide to send it to ASUS repair, you may want to check if they have an estimate of the cost to fix this kind of problem with the notebook motherboard, or if the notebook motherboard usually needs to be replaced and if they can provide an estimate for this just to get some idea.
Also, in case you decide you don't want to pay the out-of-warranty charge after sending the notebook to ASUS repair, check if there are any diagnostic fees or other expenses to get your system back unrepaired.




If they really ask me 600-700€ to replace the motherboard, without any guarantee after the repairment, would that be reasonable considering that it's half the price of a new comparable ROG model and very close to the full price of a good non-gaming laptop? Is that a honest price for the replacement of a motherboard? Would it be better to get it fixed somewhere else?

Thank you!

It really depends on your situation if you want to fix it. If you can afford a newer system with warranty, it's definitely worth consider rather than putting the money into an older out-of-warranty system that may have problems again in the near future.
If you don't even plan to keep the system very much longer, then it probably doesn't make sense to spend very much expense to fix it.
If you really like the system and want to keep it working, you need to decide for yourself if it's worth the expense (and risk that something else may go bad later if you are a worrier like me although there are probably customers out there with older systems that are still working fine, so not always easy to predict.).

If you just want to fix the unit to get to any data, consider finding a USB hard drive adapter that you can use to connect your hard drive to another computer to transfer data (and also use as a back-up drive?) so that you don't need to repair the unit to do this.

Yes, you may need to check around more to get a better idea if somebody else can fix the problem more cheaply and reliably, so again, not something I can advise you about unfortunately, but hopefully we can get more information from others.

Hope this can help, otherwise, feel free to ignore any of my information, or request more opinions from others, of course :) .