Yesterday my laptop's power supply blew I sent it in for repairs and was told that it would take 10-30 working days!! Yikes! Big question: can I use my wife's power supply in the meantime? My one had an output of 19V 4,72A 90W while hers has an output of 18,5V 3,5A 65W.
Is this do-able?
My Computer
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Own build
OS
Windows 7 x64 Professional
CPU
Intel Core i7-870 Lynnfield 2.93 GHz
Motherboard
Intel Whitesburg P55 LGA1156
Memory
Kingston Hyper X 1333MHz DDR3 4x4Gb
Graphics Card(s)
Nvidia GTS 250
Monitor(s) Displays
AOC Q3279VWF 31.5"
Screen Resolution
2560x1440
Hard Drives
Western Digital 1000GB Hard Drive (SATA 3.0Gb/s, 7200rpm, 32MB Cache)
Verbatim 500GB (External)
90 watts is standard so if the plug fits it should work.the amount of volts may be different look at ur power input on ur laptop it should say the voltage. u can also buy universal power supplys for laptops so u dont have to wait.
Yes I am talking about the external power supply/transformer. The plugs match all right but what concerns me is the different outputs of the units - see my first post.
My power supply (the one that blew) was only purchased 1 1/2 months ago so I don't want to go forking out money for a new one just yet.
My Computer
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Own build
OS
Windows 7 x64 Professional
CPU
Intel Core i7-870 Lynnfield 2.93 GHz
Motherboard
Intel Whitesburg P55 LGA1156
Memory
Kingston Hyper X 1333MHz DDR3 4x4Gb
Graphics Card(s)
Nvidia GTS 250
Monitor(s) Displays
AOC Q3279VWF 31.5"
Screen Resolution
2560x1440
Hard Drives
Western Digital 1000GB Hard Drive (SATA 3.0Gb/s, 7200rpm, 32MB Cache)
Verbatim 500GB (External)
As the rating of your wife's PSU is lower than your original one - you should be safe at least.
The issue is the current draw on the PSU from the actual laptop when it's in use - I would say that for charging purposes only you should be fine.
As for running the laptop on mains I would be more worried. If the laptop drew more current than the PSU is capable of providing then I could cause damage to the PSU. Over heating would be a potential issue too.
Whilst saying this the ratings are similar and there is normally an allowance in rated capacity so you should be OK
Windows 11 Pro x64 [Latest Release and Release Preview]
CPU
Ryzen 9 5950X, 3.8 - 5.2 MHz
Motherboard
Asus Prime X570-Pro
Memory
64GB [2 x 32GB] DDR4 3200MHz
Graphics Card(s)
4GB NVIDIA GEFORCE GTX 1650 Ti
Sound Card
On-board SPDIF to 5.1 System + HDMI [5.1 system]
Monitor(s) Displays
32" UHD 32 Bit HDR Monitor + 43" UHD 4K 32Bit HDR TV
Screen Resolution
2 x 3840 x 2160 @60Hz
Hard Drives
1TB M2 SSD OS, 500GB Fast Access SSD, 2 x 8TB Data + Various Externals from 1TB to 4TB, 10TB NAS
PSU
NZXT C750 80 PLUS Gold 750W Modular PSU
Case
Workstation Case [Matt Black]
Cooling
NZXT Kraken X63 280mm CPU Cooler +2x Quiet Case fans
Keyboard
Logitech Wireless MX Keys & K400 + others
Mouse
Logitech Wireless MX Master 3S
Internet Speed
920 MB Down 50 MB Up
Antivirus
BitDefender Total Security Pro
Browser
Chrome (always run latest Non-Beta)
Other Info
Also run ...
Laptop - Quad 8GB - Windows 10 Pro x64
Nexus 7 Android tablet x2
Samsung 10.2" tablet
Blackview TAB 8 4G Android Tablet c/w Keyboard
Wacom Intuos Pro Medium Pen Pad
Wacom Intuos Pro Small Pen Pad
Wacom Expresskeys Remote
Loopdeck+ Graphics Controller
Shuttle Pro v2 Control
Computer type
Laptop
System Manufacturer/Model Number
Dell XPS 17 10750H
OS
Windows 11 Pro x64 Latest RP
CPU
Intel I7 10750H 5.0GHz
Motherboard
Dell XPS
Memory
32GB [2x16GB] DDR4 2933 MHz
Graphics Card(s)
nVidia GTX1650Ti 4 GB GDDR6
Sound Card
Stock [Realtek] 4 Speaker
Monitor(s) Displays
17" IPS UHD+ Infinity Edge Touchscreen
Screen Resolution
3840 x 2400
Hard Drives
2TB M2 NVMe, 4TB External + various 500GB & 1TB External NVMe (also have access to spinner HDD from
PSU
Stock
Case
Stock XPS Aluminium & Carbon Fibre
Cooling
Stock - Active Fan Control
Keyboard
Backlit + Various Logitech
Mouse
Stock Track Pad + Logitech MX Trackball
Internet Speed
72 MB Down 18MB Up
Browser
Chrome
Other Info
Also run ...
Laptop - Quad 8GB - Windows 10 Pro x64
Nexus 7 Android tablet x2
10.2" tablet
Sony Z3 Android Smartphone
Wacom Intuos Pro Medium Pen Pad
Wacom Intuos Pro Small Pen Pad
Wacom Expresskeys Remote
Loopdeck+ Graphics Controller
Shuttle Pro v2 Control Pad
10TB NAS
Buy a universal one that is compatible with both laptops and use that till you get yours back and then save the universal so if yours or hers fail you have one.
The main risk you have of using hers is that her power supply can possibly overheat and die when powering your laptop.
Yes I am talking about the external power supply/transformer. The plugs match all right but what concerns me is the different outputs of the units - see my first post.
There is some slack in the power supply ratings, but like others have said, I wouldn't use your wife's PSU to power the your laptop in normal use. Charging would be fine, but your old one provides over an Amp more current than hers does. Unless your laptop maker uses a common supply for all of its models, including the high end ones that draw lots of power, it probably means that your laptop itself draws significantly more power than hers does.
That will tax her supply heavily, since hers supplies 25 rated Watts less than yours, and it could damage it. 25 Watts is not a small difference in power. It's a substantial difference. As mentioned, I would pick up a universal supply with the same specs as yours and keep it as a spare afterward. You can always use a big supply for a small laptop, but going the other way isn't really a good idea.
I sent it in for repairs and was told that it would take 10-30 working days!! Yikes! Big question: can I use my wife's power supply in the meantime? My one had an output of 19V 4,72A 90W while hers has an output of 18,5V 3,5A 65W. 
