HP EPK50 LA-G07EP short on +3VALWP and +1.0V_PRIMP

johnbeton

Senior Member

Join Date: Jun 2021

Posts: 95

Country: Belgium
#1

HP EPK50 LA-G07EP short on +3VALWP and +1.0V_PRIMP

04-23-2025, 02:34 AM

Hello,

Working on a board HP EPK50 LA-G07EP. Owner tried to replace LCD display without disconnecting battery. Afterwards, the notebook turns on for a few seconds and shuts off.
Mainrail looks fine, battery charges. I have +5VALWP, but that's it.
I measure short to ground (0.03Ohms) on +3VALWP and +1.0V_PRIMP.

Injecting 1v at 3A on PL1001 and PL302 only slightly warms up the cpu after several minutes.
Tags: None
mcplslg123

Badcaps Legend

Join Date: Jun 2015

Posts: 7262

Country: india
#2

04-23-2025, 03:24 AM

Short on +3VLP coupled with short on +1.0V rail= Shorted SOC.
Comment
johnbeton

Senior Member

Join Date: Jun 2021

Posts: 95

Country: Belgium
#3

04-23-2025, 04:12 AM

I was afraid for that, so this one is unrepairable
Comment
mcplslg123

Badcaps Legend

Join Date: Jun 2015

Posts: 7262

Country: india
#4

04-24-2025, 03:46 AM

Yes, unless you want to replace the SOC.
Comment

Previous template Next

Extreme High Current & Low Voltage Short Killer ??

by DynaxSC

Hi Folks

I'm looking for a extreme high current short killer solution for a reasonable cost.

I have an LGA1700 motherboard (ASUS PRIME Z790-P WiFi) where I exchanged the LGA socket already 3 times, and every time after the socket exchange I get a short of power supply lines VCORE (V variable) and VCCIN_AUX (1.8V).
After taking off the socket, the shorts dissappear again.
The soldermask on the socket is already partially demaged from the heat, so I have reconstructed the soldermask by manually painting the missing soldermask parts with a very small top of a...
- Channel: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals
10-15-2024, 10:13 AM
Acer Nitro 5 3valwp short 1ohm

by Thomas8607

Hi all!

I have an acer nitro 5 notebook. The 1,05v, 1,8v and 3valwp were short.
I injected 3v on 3v rail and the pch was hot,i desoldered it.
The 1,8 and 1,05v are ok now, but the 3v still shorted.

The 3v to ground resistance is 1ohm (not zero).

Where do i find the fail?
I have schematic and boardview too.

Thanks!...
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
06-24-2023, 12:18 AM
MacBook Pro 14" A2442 Short on PPBUS_AON but no short present when injecting voltage!

by Stephen

I check PPBUS_AON and there is a short present on the line, the computer shows a short when testing for short to ground, so when I inject voltage into the line, I get 0AMPS so no short is showing up. I have replaced a blown cap on this board that exploded and tested for the short and it is now removed. Any suggestions? I tested voltage at the line when the fuses are connected and I am getting 1.2 Volts at the line.
- Channel: Troubleshooting Laptops, Tablets, and Mobile Devices
02-06-2025, 12:03 PM
Help me find the short circuit on this WORKING Nvidia GTX1650

by aaronkatrini

Hi all,

Recently picked up this GTX1650 at a local flea market for a low price and wanted to use it on my secondary PC. I first tested the card and saw the fan spin for a split second and then nothing. Immediately I thought of a short circuit. Disassembled and found a shorted SMD capacitor, injected voltage into it (1V/4A) and two Mosfets got hot immediately (QN3103 & QN3107). Desoldered these Mosfets and the card turned back to life.

Bought replacements from Aliexpress and replaced them afterwards. Tried the card but still the saw the fan spin for a split second...
- Channel: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals
04-18-2024, 03:15 PM
9th Gen Dell Optiplex Micro PC motherboard repair: Short Circuit?

by Geeker007

Hi All, I have a 9th Gen Dell Optiplex micro PC motherboard which doesn't power on. When I connect the motherboard with power adapter, it goes into safe mode and turns off. So from info I have gathered online, it looks like there is a short circuit on the motherboard. So can you guys help me with figuring out the issue?

I am new to electronics repair, so my queries could be naive but I am ready to learn.

So I have a multimeter and a solder with me. But I can try to get a variable voltage power supply with a thermal camera as well. From what I seen online, best way is...
- Channel: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals
01-28-2025, 03:31 PM
Loading...
No more items.

HP EPK50 LA-G07EP short on +3VALWP and +1.0V_PRIMP

HP EPK50 LA-G07EP short on +3VALWP and +1.0V_PRIMP

Comment

Comment

Comment

Related Topics