S-XPS 1645 AC Power Throttle Issue Investigation

[khaledseif]

Originally Posted by Zinu

Yeah but don't you think only two of the three plugs connected can't supply 130W?

I think it will as the third pin is ground

[max420]

the cord for the slim 90W has an angle to it that makes plugging it into the thick 130W brick not possible, unless i shave down plastic on either unit, and im not willing to do that.

ya the shack has it, but i live kind of far from an electronics store, and i don't really have teh time to leave, im @ home reading prints, pricing work etc. ill grab one sunday if i get some time, or remember. ill up a pic of what i mean, after i get off the phone with XPS Support.

[ikjadoon]

So I never got my call from the executive technical support team. No matter, I just spend another hour explaining the problem again, lol.

Anyways, now a SSR (Senior Support Representative) who is part of the Global Escalation Team is looking at the problem: he has seen the problem also before and will give me a call Monday....that should hopefully come, lol.

~Ibrahim~

[Zlog]

yeah i just got home and saw that angle on the adapter plug and was like "oh nm"

I might go buy a universal 130 this weekend and see if it works.

then i'll return it >.> and make dell send me one if it does.

I ungrayed the RGB issue, even though i cannot duplicate it on mine.

[Synthesia]

Just gonna add the summing up of the theoretical individual components' maximum power usage from the other post:

Seems like it indeed IS the 90W power adapter indeed not being able to handle the power demand for this laptop. And this would make sense when adding up what the individual components need (on their theoretical max.):

Core i7 processor = 45W
ATI 4670 Graphics = 35W

These 2 components together are already 80W.

Add to that the WLED screen which will use a few W too, even more on full brightness, and with an RGBLED screen added some more on top of that.
The SATA HDD spinning at 7200rpm is also likely to use a couple of Watts of power - moreso than the SSD drives.
Add to that the other components, the odd peripheral USB mouse and keyboards and already with these you'll be quite a bit over 90W I'm guessing.

That's not to mention the battery charging requirements...

So yea I think we should point this out to Dell and file as many complaints as possible so they change the adapter to at least 130W as a standard on all new (and not yet shipped) orders.

[atlstang]

We cant say for sure about the wattage numbers adding up like that. as TDP doesnt reflect actuall draw, as been said before. In practice it could be more could be less we just dont know. but we can say by looking at it, its very sketchy

[max420]

well, it turns out that if i just push the end of my 90W into the 130W brick, the light on teh brick turns on, and it charged my laptop battery, but it seems kind of sketchy, i can't really be sure it's going to be a solid connection, can I?

:unsure:

[atlstang]

power is power i would think. ground is probably for noise cancellation / safety if something goes wrong over time. as long as the laptop gets its supplied steady voltage it shouldnt care. i would make sure if the dc voltage is the same though, even that might not matter though

[Siphen]

[quote=max420;5559862]well, it turns out that if i just push the end of my 90W into the 130W brick, the light on teh brick turns on, and it charged my laptop battery, but it seems kind of sketchy, i can't really be sure it's going to be a solid connection, can I?

:unsure


Looks to me they sent you the 3 prong cable for the slim 130 and sent you the full size 130. Gota love Dell. The connection looks ok. As long as the bios is returning 130w you should be ok. The 130 adaptor I have plugs in around as much as it is on your

edit: wait... Did they send a 2 prong cable with your 130 that doesn't even work with it? The cable that comes with the 90 should be ok. Try running some speed tests after verifying in bios it shows the adaptor as 130

[PsYcNeT]

Here's a neat one for you guys. I just noticed on the bottom of the laptop it says "for use with the pa-12 adapter" which is an old Inspiron series 65w dealie. The model I received was a pa-3e adapter.

Maybe dell doesn't even know what this thing needs?