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maxslo replied to Dell U3011 no display after a few minutes

in Troubleshooting Computer Displays

06-14-2021, 11:39 AM
Re: Dell U3011 no display after a few minutes

Same here, my trusty ol U3011T had started going blank from time to time.
I could get it to stay on by turning the brightness to 0 and keep constrast at 50.

Today i've decided to give this a try and I too have found that exact capacitor having a broken connection, a couple of minutes and a generous application application of solder later, the monitor is purring happily at 100% brightness

So glad it could be saved, nothing beats the IO compatibility on this monitor ..
And it also doubles up as...

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maxslo replied to DELL XPS 9550 bios dumps

in BIOS Requests ONLY!

01-21-2021, 12:50 PM
Re: DELL XPS 9550 bios dumps

Here are the two dumps....

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maxslo replied to DELL XPS 9550 bios dumps

in BIOS Requests ONLY!

01-21-2021, 12:25 PM
Re: DELL XPS 9550 bios dumps

I have dumps from a working laptop.

Those two chips are for thunderbolt FW and for power delivery FW,
i've compared them with multiple dumps, the content is always the same.

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maxslo replied to DELL XPS 9550 bios dumps

in BIOS Requests ONLY!

12-30-2020, 08:32 AM
Re: DELL XPS 9550 bios dumps

I have tried this image but i have a problem.. the laptop posts with the cleared ME BIOS, but only once, i can enter bios and it stay there working just fine, but after reboot it's back to black screen no post.

Any one have an idea what i could do?

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maxslo replied to Alienware M17x R4 no power, low resistance 5v/3.3v to GND

in Troubleshooting Laptops, Tablets, and Mobile Devices

10-16-2020, 02:40 PM
Re: Alienware M17x R4 no power, low resistance 5v/3.3v to GND

same thing was for me, with the A11 it was just dead, cousin motherboards maybe
No idea what causes it tho

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maxslo replied to Alienware M17x R4 no power, low resistance 5v/3.3v to GND

in Troubleshooting Laptops, Tablets, and Mobile Devices

10-15-2020, 03:00 PM
Re: Alienware M17x R4 no power, low resistance 5v/3.3v to GND

Did you get any beeps?

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maxslo replied to Alienware M17x R4 no power, low resistance 5v/3.3v to GND

in Troubleshooting Laptops, Tablets, and Mobile Devices

10-14-2020, 01:56 PM
Re: Alienware M17x R4 no power, low resistance 5v/3.3v to GND

I used the A13 for both, i made sure that the programming was ok. (Reading it back after write and copare).
A11 didn't work for me and i haven't tried A12....

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maxslo replied to Alienware M17x R4 no power, low resistance 5v/3.3v to GND

in Troubleshooting Laptops, Tablets, and Mobile Devices

09-27-2020, 02:58 PM
Re: Alienware M17x R4 no power, low resistance 5v/3.3v to GND

Yeah it posts and has already loaded to windows,
I've fully assembled it and looks like everything is recognized and working
Next i'm adding the external GPU to the laptop.

The Clevo shuts down after 1-2seconds.
I've swapped around the CPU, used all 3 different ram slots... BTW, weird, why would you have odd number of ram slots o.O

The laptop stays on if i remove ram from all slots, no beeps or anything.
All the rams are tested in other system so they are good,...

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maxslo replied to Alienware M17x R4 no power, low resistance 5v/3.3v to GND

in Troubleshooting Laptops, Tablets, and Mobile Devices

09-27-2020, 11:05 AM
Re: Alienware M17x R4 no power, low resistance 5v/3.3v to GND

@dellxps15
lol can't believe it, the A13 worked... it's odd, but why wouldn't the A11 work too :S
I guess i jumped to conclusion too fast...
Now i have to make sure everything else is working as supposed to.

Regarding the 19v on the power button, the aforementioned Clevo is also Ivy bridge, has the same 19v on the power button like the M17x R4 and has no power on 3.3v and 5V until it's powered on.

I guess the difference between sandy and ivy bridge really is that great when...

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maxslo replied to Alienware M17x R4 no power, low resistance 5v/3.3v to GND

in Troubleshooting Laptops, Tablets, and Mobile Devices

09-27-2020, 10:16 AM
Re: Alienware M17x R4 no power, low resistance 5v/3.3v to GND

I've been busy with cousin's Clevo laptop not powering on anymore, i'll open a separate thread for that, i'm in the process of reprogramming the chips to A13 versions, i'll update you shortly about any changes.

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maxslo replied to Alienware M17x R4 no power, low resistance 5v/3.3v to GND

in Troubleshooting Laptops, Tablets, and Mobile Devices

09-25-2020, 02:47 PM
Re: Alienware M17x R4 no power, low resistance 5v/3.3v to GND

That's the same archive i used, only that i used A11 ...
I'll give it another try tomorrow with A13, if that doesn't help it's most likely the KB930 right?

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maxslo replied to Alienware M17x R4 no power, low resistance 5v/3.3v to GND

in Troubleshooting Laptops, Tablets, and Mobile Devices

09-25-2020, 01:19 PM
Re: Alienware M17x R4 no power, low resistance 5v/3.3v to GND

Yeah those are without pressing power button... even if i do it makes no difference, laptop doesn't power on, 3.3 and 5v dont come on

Ok now here are differences:
U36
1: 0V (3.3V for you, this comes from FSEL KB930)
2: 0V (1.2V for you, this comes from FRD KB930)
3: 3.3V
4: 0V
5: 0V (1.3V for you, this comes from FWR KB930)
6: 3.3V (0V for you, this comes from SPI_CLK KB930)
7: 3.3V
8: 3.3V

basically all the...

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maxslo replied to Alienware M17x R4 no power, low resistance 5v/3.3v to GND

in Troubleshooting Laptops, Tablets, and Mobile Devices

09-25-2020, 11:02 AM
Re: Alienware M17x R4 no power, low resistance 5v/3.3v to GND

Ok, I've put everything back together, the PQ7 is 19V just like you said.

Measurements on the PU4 are:
1: 0V
2: 0V
3: 2V
4: 2V
5: 0V
6: 0V
7: 0V
8: 3.3V
9: 4.54V
10: 0V
11: 0V
12: 0V
13: 3.13V
14: 2V
15: 0V (GND)
16: 19.5V
17: 5V
18: 0V (NC)
19: 0V
20: 0V
21: 0V
22: 4.54V
23: 0V
24: 0V

@dellxps15, i've checked the EC_ON line from KB930 at PQ62, all 3...

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maxslo replied to Alienware M17x R4 no power, low resistance 5v/3.3v to GND

in Troubleshooting Laptops, Tablets, and Mobile Devices

09-24-2020, 11:16 AM
Re: Alienware M17x R4 no power, low resistance 5v/3.3v to GND

Yeah all contacts are ok, but i have all 4 fets off and both coils and caps, i'll first put those back since we figured that 15ohm is ok as the r3 board has 15ohm too,

I replied to #18 in #20

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maxslo replied to Alienware M17x R4 no power, low resistance 5v/3.3v to GND

in Troubleshooting Laptops, Tablets, and Mobile Devices

09-24-2020, 09:43 AM
Re: Alienware M17x R4 no power, low resistance 5v/3.3v to GND

Weird that there is such a difference between r3 and r4... Ok i'll give the jumper wire a try.

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maxslo replied to Alienware M17x R4 no power, low resistance 5v/3.3v to GND

in Troubleshooting Laptops, Tablets, and Mobile Devices

09-24-2020, 08:00 AM
Re: Alienware M17x R4 no power, low resistance 5v/3.3v to GND

since dellxps has found that his board powers on with 19v on the power button, i don't think this is the issue, however i can try it if there are no other options.

@dellxps15 do you have voltage at PL10 and PL11 when in off state?

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maxslo replied to Alienware M17x R4 no power, low resistance 5v/3.3v to GND

in Troubleshooting Laptops, Tablets, and Mobile Devices

09-24-2020, 05:08 AM
Re: Alienware M17x R4 no power, low resistance 5v/3.3v to GND

Ok, good to know then, i thought there must be something wrong with the reading, there is no way it could be shorted and still at 5V

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maxslo replied to Alienware M17x R4 no power, low resistance 5v/3.3v to GND

in Troubleshooting Laptops, Tablets, and Mobile Devices

09-24-2020, 04:54 AM
Re: Alienware M17x R4 no power, low resistance 5v/3.3v to GND

Everything is as you have, except 19V voltage is a bit lower at 18-18.5V...

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maxslo replied to Alienware M17x R4 no power, low resistance 5v/3.3v to GND

in Troubleshooting Laptops, Tablets, and Mobile Devices

09-24-2020, 03:36 AM
Re: Alienware M17x R4 no power, low resistance 5v/3.3v to GND

If it comes down to KB930QF, since it's the same chip on the R3, can i just swap it around, or does it have to be programmed?...

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maxslo replied to Alienware M17x R4 no power, low resistance 5v/3.3v to GND

in Troubleshooting Laptops, Tablets, and Mobile Devices

09-24-2020, 03:26 AM
Re: Alienware M17x R4 no power, low resistance 5v/3.3v to GND

On a good R3 board, the power button has 3.1V when in off state.

There is always 5V and 3.3V (not only after it's powered on) on the points where i don't have voltage on the R4 board.

Funny thing is that when it's in off state, it has 15ohm resistance to ground on that same points, so i guess this is not the problem??

I'll put the board back together and double check my measurements on the faulty r4 board.

Edit: on working laptop the resistance to ground measured on...

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Last edited by maxslo; 09-24-2020, 03:32 AM.
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