HP15 Quanta Y11-No display

mcplslg123

Badcaps Legend

Join Date: Jun 2015

Posts: 7262

Country: india
#1

HP15 Quanta Y11-No display

06-06-2019, 11:25 PM

This mb switches on and consumption is 287 on dc supply. DRAM_RST is 0.11 on pin 30(should be 1.35V). Some of the measurements i have taken:

DPWROK_EC-3.3V
SLP_SUS_EC-3.3V
SLP_SUS_ON-3.3V
MAINON-3.3V
SUS_ON-3.3V
DNBSWON#-3.3V
NBSWON#-3.3V
SUSC#-3.3V
HPROCHOT_EC-3.3V
SUSWARN_EC-3.3V
MBCLK-3.3V
MBDATA-3.3V
HWPG-3.3V
EC_PWR_OK-3.3V
VR_ON-3.3V
SUSACK_EC-3.3V

All the above redings are on kbc pins and i think are ok. I have replaced ram regulator IC with a new one. Voltage on R266 is 1.35v on one side and other side has 0.11V. Flashed HP virgin bios still same issue.

PCH faulty?? or you beleive something else.

PS: Mb switches on and shuts down automatically after 30 seconds and again turns on . It does so twice and then stays on.
Attached Files
if you find these attachements useful please consider making a small donation to the site

hp15-DAY11AMB6E0.pdf (2.39 MB, 10 views)
Tags: None
mcplslg123

Badcaps Legend

Join Date: Jun 2015

Posts: 7262

Country: india
#2

06-06-2019, 11:27 PM

Re: HP15 Quanta Y11-No display

Sorry posted in bios section by mistake. Pl see the post in main section.
Comment

Previous template Next

Need help with HP15-fxxxxx Quanta U99/U92 LVDS <> eDP conversion.

by lpraderi

Hello , for some time I was studying Quanta U9x/8x schematics and the option to use both type of screen (LVDS 40 pin / eDP 30 pin).
In some cases to use LVDS screen PCB use converter IC RTD2132/6
Now I found an HP 15 F series U99 mainboard with RTD chip not populated and LVDS 40 pin lcd touch screen
at the same time I have another HP 15 N series with Quanta U92 mainboard and RTD2136 with eDP 30 pin lcd screen (no touch).
Maybe someone more experienced in the subject can clarify if is posible to change type of screen used with some resistors / bios options change.
...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
11-25-2023, 09:31 AM
HP15 CC178CL Quanta G74a

by josue

bios functional....
- Channel: BIOS Requests ONLY!
02-15-2023, 07:17 PM
Quanta N76 power-on issue.

by Francisco.s

Hello, I'm trying to repair an HP 27 Quanta N76 (DA0N76MB6E0 Rev E).

I only get 3.3V, 5V, and 1.05V; no other voltages.

I tried the BIOS and changed the KBC. The KBC self-programmed upon power-up after changing it.

The VR-On is missing for NCP81220, but 1.2V is also missing for DDR4, so 1P2V_PWRGD is low. SUSON or DDR_VTT_EN are not present on the DDR4 voltage regulator (RT8231BGQW). It seems the KBC isn't triggering these signals.

I'm using the Quanta N91 schematic, but there are too many changes that make it nearly impossible to measure signal...
- Channel: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals
07-14-2025, 02:20 PM
HP Omen 17t-ck100 Quanta G3LB DAG3LBMBCD0 schematic

by Maxmad

Anyone has schematic for this laptop board? HP Omen 17-ck1000 Quanta G3LB DAG3LBMBCD0...
- Channel: Schematic Requests ONLY!
10-19-2025, 03:00 PM
Plasma Samsung PS-50C96HD Main board BN94-01223C switches off supply after few seconds

by alltvrepairs

Hi,
I have this almost brand new Plasma was well stored. I would like to repair it for a friend of mine.

I have noticed that it works for few seconds then switches Off the Power_ On signal. Have disconnected boards and left maion board and power supply and still the same. The power supply with PS_ON and VA signals On stays on so it is not a problem in the power supply.
Any one met this problem in the past?...
- Channel: Troubleshooting TVs and Video Sources
10-08-2025, 07:34 AM
Loading...
No more items.

HP15 Quanta Y11-No display

HP15 Quanta Y11-No display

Comment

Related Topics