Dell xps 9560 la-e331p dead

[barakuda123]

Dell xps 9560
La-e331p (schematics only available for dell xps 9550 la-361p)
Similar but vram different
hi laptop not working
When motherboard powered on it takes 0.25 amp for about 3 sec then goes back to 0.001
When at 0.25 amp
3.3v ok
5v ok
1.2v ram ok
1.0v pch ok
0.9v cpu vccio ok
1.0v cpu sa ok
1.3v gpu ddr ok

No voltage on pl 1200,pl 1201.1202(cpu vcc core)
No short detected anywhere
Problem appears to be in isl95829a
No pwm vcore1a,1b,1c
And fccm core only 2v (think should be 5?)
Isl95829a got
Vin 13.5v
5vs
3vs
+vccst
Vr enable
Vr ready
Sda,sclk, #alert sygnals communications with cpu ok all 1v
Replaced isl95829a but still same
Pu1200,pu1201,pu1202
Cpu vcore drmos
1pwm core 0v
2fccm core 2v
3 boot 4.5v
6 vin 13.6v
14 5vs-5v
Stuck here bios flashed any help?

[Techtiger]

Re: Dell xps 9560 la-e331p dead

Find out DRAMRST or PWRGOOD Ok or not

[dellxps15]

Re: Dell xps 9560 la-e331p dead

if u have PJP701 or PJP702 try remove the solder and see if pc power on ok.

[barakuda123]

Re: Dell xps 9560 la-e331p dead

Find out DRAMRST or PWRGOOD Ok or not

Where i can Measure these signals?

[barakuda123]

Re: Dell xps 9560 la-e331p dead

if u have PJP701 or PJP702 try remove the solder and see if pc power on ok.

if i remove jumper pjp701 and pjp 702 same reaction but takes less amp 0.15 due to this line off but board behave the same

[barakuda123]

Re: Dell xps 9560 la-e331p dead

I have replaced isl95829a once again and fb_a signal is missing from cpu .....resistance in this line ok
No communication with cpu?? Dead cpu??

[Techtiger]

Re: Dell xps 9560 la-e331p dead

Check pin 108 DDR3 Slot voltage ? If now supply find out RD35 voltage in out & input side ?
ALL_GPWRGD ?

[barakuda123]

Re: Dell xps 9560 la-e331p dead

Check pin 108 DDR3 Slot voltage ? If now supply find out RD35 voltage in out & input side ?
ALL_GPWRGD ?

Hi aftet more measurements
PCH_PLTRST#_EC missing this is probably last signal before vcc_core
On Uh7
I've got
Pin 1 PCH_PLTRST# -0v
Pin 2 PCH_PLTRST#-3.3v
Pin 4 PCH_PLTRST#ec -0v
Im little confused why pin 1 and 2 got same name but are not connected (diode mode)
Can i connect pin 1 and pin 2 and try to power up the board???

[barakuda123]

Re: Dell xps 9560 la-e331p dead

[QUOTE=barakuda123;988851]Hi aftet more measurements
PCH_PLTRST#_EC missing this is probably last signal before vcc_core
On Uh7
I've got
Pin 1 PCH_PLTRST# -0v
Pin 2 PCH_PLTRST#-0v
Pin 4 PCH_PLTRST#ec -0v
This signal comes directly from pch ....can I inject 3.3v from other source on pin 1,2 UH7 and power on board??? Will this be safe?

[Techtiger]

Re: Dell xps 9560 la-e331p dead

[QUOTE=barakuda123;988884]

Hi aftet more measurements
PCH_PLTRST#_EC missing this is probably last signal before vcc_core
On Uh7
I've got
Pin 1 PCH_PLTRST# -0v
Pin 2 PCH_PLTRST#-0v
Pin 4 PCH_PLTRST#ec -0v
This signal comes directly from pch ....can I inject 3.3v from other source on pin 1,2 UH7 and power on board??? Will this be safe?

uplode the Schematic that you have the my one is different

[barakuda123]

Re: Dell xps 9560 la-e331p dead

[QUOTE=techtiger;988930]

uplode the Schematic that you have the my one is different

There's no schematics for 9560 only for 9550 and 9570 There's a boardview for 9560 tho
I'm just combining all 3
Power sequence os from 9570 tho most if not all start up signals are the same

[Weelcup]

Re: Dell xps 9560 la-e331p dead

[QUOTE=barakuda123;988949]

There's no schematics for 9560 only for 9550 and 9570 There's a boardview for 9560 tho
I'm just combining all 3
Power sequence os from 9570 tho most if not all start up signals are the same

This is the 9560 schematics buddy.
😊👍👍

[barakuda123]

Re: Dell xps 9560 la-e331p dead

[QUOTE=Weelcup;988959]

This is the 9560 schematics buddy.
😊👍👍

This is schematics for dell xps 9550.....very similar to dell 9560 but that's no power up sequence thats why I'm using power sequence from 9570
Dell 9550 =la-c361p
Dell 9560 =la-e331p
Dell 9579 =la-g341p

[Techtiger]

Re: Dell xps 9560 la-e331p dead

First remove UH7 & see if the voltage is back pin 5/ 1/ 2 , Check pin 108 DDR3 Slot voltage ? If now supply find out RD35 voltage in out & input side ?

[SMDFlea]

Re: Dell xps 9560 la-e331p dead

The la-e331p schematic is available on a few paid sites,it hasn`t leaked onto any free sites yet.

[barakuda123]

Re: Dell xps 9560 la-e331p dead

The la-e331p schematic is available on a few paid sites,it hasn`t leaked onto any free sites yet.

Can you please share where? Already paid few times for 9569 schematics and it always turned out to be 9550 (vinafix)...i will be happy to pay for 9560 la-e331p schematic

[barakuda123]

Re: Dell xps 9560 la-e331p dead

First remove UH7 & see if the voltage is back pin 5/ 1/ 2 , Check pin 108 DDR3 Slot voltage ? If now supply find out RD35 voltage in out & input side ?

Hi after removing uh7 still no voltage on pin 1 or pin 2(pch_pltrst#) on this board its rd31 i believe you asking for ddr4_dramrst# and h_dramrst# when i power up the board voltage jums for 0.5 sec to 50mili volts than down to zero

[Techtiger]

Re: Dell xps 9560 la-e331p dead

pin 5 UH7 do you get 3V ? if you have a hot air gun heat the PCH and see as for the Schematic RD31@ no stuff find out RD35 or put a jumper 1.2V & see what is the resistance to GND on RD31

[piernov]

Re: Dell xps 9560 la-e331p dead

Can you annotate the pins of UH7 on the picture of the board with your voltage measurements?

[Weelcup]

Re: Dell xps 9560 la-e331p dead

[QUOTE=barakuda123;989017]

This is schematics for dell xps 9550.....very similar to dell 9560 but that's no power up sequence thats why I'm using power sequence from 9570
Dell 9550 =la-c361p
Dell 9560 =la-e331p
Dell 9579 =la-g341p

I see. I agree the power should be close to the one with 9570 or 9550..