Asus GL703GM short

[retrorepair2]

Re: Asus GL703GM short

It's still on btw in safe mode. Think that proves something. Not sure what lol

[mon2]

Re: Asus GL703GM short

This means that you have an ill behaved device driver.

In safe mode, only the basic windows os is loaded.

[retrorepair2]

Re: Asus GL703GM short

It shuts off in windows setup too though, doesn't that mean there's still some sort of hardware issue?

This is a clean install too (installed on another machine as it can't complete setup)

[mon2]

Re: Asus GL703GM short

During setup, it is very possible that a device driver loads and perhaps enables a bad piece of hardware. For example, the ram is boosted to another clock value, etc. Video card is kicked into a faster mode. You can try by systematically testing the video mode driver etc. Enable one at a time to locate the faulty driver or hardware piece. For now, run the laptop overnight and see it powers down or not if left in safe mode.

[retrorepair2]

Re: Asus GL703GM short

Ok once I've tested the charging circuit I'll leave it overnight.

I don't think the GPU is the issue, before I even installed the driver it was shutting down so assume it was using the intel iris video or at least wasn't stressing the GPU. RAM is brand new but again, the existing RAM was short to ground so who knows really.

Thank you for your help by the way, I'd be made up if I can get this thing sorted

[reformatt]

Re: Asus GL703GM short

Since it's an ASUS with integrated power button in the keyboard, you might want to try booting it without the keyboard connected. It's so often a failure in ASUS machines its the first thing I go for with unexplained shutdowns. I usually just identify which pins it goes to on the keyboard connector and short the pin manually to boot it. Or try another keyboard of course.

[retrorepair2]

Re: Asus GL703GM short

I did try that, same thing though.

After my hour and a half long safe mode fun, I booted normally and was greeted with the attached image. I believe this means it's officially a GPU issue and is in fact fucked.

I did decide to go ahead and try the resistor removal anyway, found it was still 20v on the IC side.

BUT

I also found one of the DCin mosfets was shorted to all pins. I'm almost 100% sure I checked this the other day so no idea what that was about. Pulled a fet from a parts board and fitted it, confirmed no more shorts, powered up and got 26v. A small, insignificant win as by this point, every time I load windows and the screen dims, it shuts off. The GPU I think is almost dead.

If anyone has any other thoughts I'm all ears but I don't think there's much hope for this laptop now. Unless I'm ok to run it in safe mode forever.

[reformatt]

Re: Asus GL703GM short

Yeh, I'd concur with that. I see a lot of cooked GPU's in these gaming systems and tell them just go out and buy a tower. They just don't have adequate cooling when they get a bit of dust in them.

[retrorepair2]

Re: Asus GL703GM short

I mean I've spent the last week on this thing, the least I think I can try is cooking the die for a few minutes lol. If it gives me a few months of use at least that'll be something. They saw me coming with this thing though, it's now pretty obvious they put a collection of dead components in one machine and sold it as "untested". More fool me for biting I guess!

Of course there's still damage I caused by accidently shorting 5v to 20v leaving the fans blowing full tilt permanently. Could try to work out what's up with that.

Who knows, maybe a parts board will pop up at some point for me to experiment with.

Thanks for the help anyway guys.

[reformatt]

Re: Asus GL703GM short

Yep, just bought a Macbook Pro that supposedly 'didn't turn on'. Bought it primarily for the screen as that looked mint and of course, it does turn on and the screen is cracked. I wanted it just for the screen really since for 2015 A1502 these are worth AUD$500.

But anything off eBay, you have to assume worst case and bid accordingly.

[retrorepair2]

Re: Asus GL703GM short

Yeah should have known better, wasn't really a bargain either. Sucks about that macbook, even if they state no returns though, sounds like it wasn't as described so I'd still back it. Think I actually have one of those screens, but again, cracked.

What do you think I should go after in regards to my snafu? Basically was measuring one of the battery pair mosfets and accidently bridged a tiny resistor to the 20v side. The resistor reads 4.67v on side side, ground on the other and measures 155ohm across it. Only issue I've found is the fans are on full blast all the time but the temps and tachs seem to work fine. Maybe the PWM ICs and surrounding comps?

I do wonder if maybe that resistor is now a bit short. Without board view I've no idea where it goes..

[reformatt]

Re: Asus GL703GM short

Depends on where that component went to. Usually when I see this behaviour (in MAC's at least), you are missing sensor data. Hard to say without a schematic.

At the end of the day, it's an Asus. I put these in the same category as Acer as far as build quality goes, and doesn't take much for me to write them off.

[retrorepair2]

Re: Asus GL703GM short

It's an Asus I'm invested in sadly, it's a cool laptop.. when it works lol

I'll dig through the schematic. Absolutely hate that they don't label 90% of components though.

[retrorepair2]

Re: Asus GL703GM short

Well, this may not be over yet. I removed the second fet in the pair in the NVVDD power generation and seems I hadn't flowed it properly when I replaced it. Not had that dodgy looking screen since I reflowed it. The other fet arrived today too so stuck that on but it does still randomly shut down.

[Sephir0th]

Re: Asus GL703GM short

I have the feeling the DC-IN mosfets/circuitry were not troubleshootet properly. However, maybe we reached a point where it is better to take it to a repair shop.

[retrorepair2]

Re: Asus GL703GM short

I have the feeling the DC-IN mosfets/circuitry were not troubleshootet properly. However, maybe we reached a point where it is better to take it to a repair shop.

Never lol. To be honest, what I've already invested plus their work, I could probably buy two of these things

I've located the fan issue anyway regarding my snafu. PU9001 (UP1905AMA8) seems to be pulling it's little circuit down. The 100k resistor that I shorted is reading 160ohm but when I remove PU9001, it's 100k again. It's taken about 4 hours to find this and verify the cause. What a time consuming mistake. I need sharper probes!

[retrorepair2]

Re: Asus GL703GM short

I don't suppose anyone knows where I can find a UP1905AMAB or equivalent temp sensor?

[reformatt]

Re: Asus GL703GM short

SUHMS on Aliexpress.

[retrorepair2]

Re: Asus GL703GM short

A bit of an update on this.

I didn't recieve the PWM IC for this yet, though frankly I don't know how important it is, temps seem fine and fans still do their job. It will get installed regardless.

I've got a "proper" Asus PSU for it now, the quotes are because Asus can't seem to make up their mind what barrel connector to use and the PSU with the pin it turns out is just a standard barrel jack setup with an unusually large inner diameter. The pin just "locates" it. Anyway, adapted the PSU so now it's receiving appropriate wattage.

I also noticed installing the replacement mosfet from the NVVDD power rail that a mosfet I previously removed to rule it out as a problem wasn't quite soldered properly (stupid massive GND planes) so that's all sorted.

Also found the system stopped seeing the hdd, I found this was because the stupid FPC cable had snapped in half from repeated use.

So as I didn't have a NVME laying around, not wanting to throw any more money at this, I've installed Windows 10 via USB using WinToUSB and guess what? I've not had ONE shutdown. It's been running for a good 10 hours in standard Windows WITH the graphics driver installed.

Now, I'm still getting the weird glitches which extend to 3D it seems with random triangles flying around. It did occur to me though, that I only saw this after updating to current nvidia drivers and since seeing a post on the Asus forum with what looked like an extremely similar issue, it seems it *could* be an issue this system has with the lateat drivers. So I'm going to try DDU to remove these and install the Asus recommended driver I installed initially. It can't hurt to try.

[retrorepair2]

Re: Asus GL703GM short

Didn't work, shocker. Did try a very stupid thing and reflowed the VRAM, now it's much worse. Bios corruption and windows disables the 1060. So may be time to learn to reball BGA lol

I did want to run Nvidia MATS to see which ram I'd fucked up but of course, this laptop can only boot efi