JF2049

Hello everyone,

This is my first time posting on this forum, and I have quite an odd question regarding power adapter issues. Let me give you the specifics of whats happening.

First of all, I work for a laptop project designed to deliver/fix/maintain laptops to students around the province. All of our laptops were purchased from HP, and the one model in question I'm having an issue with is the NX6110. Here are its system specs:

Mainboard : HP 3088
Chipset : Intel i910GML/i915GMS
Processor : Intel Celeron M @ 1396 MHz
Physical Memory : 1024 MB (2 x 512 DDR-SDRAM )
Video Card : Intel 82915GM/GMS, 82910GML Integrated Graphics
Hard Disk : HITACHI_DK23DA-40B (40 GB)
DVD-Rom Drive : TSSTcorp CDW/DVD TS-L462C
DVD-Rom Drive : Generic DVD-ROM SCSI CdRom Device
Monitor Type : 15 inchs
Network Card : Broadcom Corp BCM4309 802.11a/b/g Wireless LAN
Network Card : Broadcom Corp BCM440x 100Base-TX Fast Ethernet
Operating System : Windows XP Professional 5.01.2600 SP3
DirectX : Version 9.0c

We recently ran out of power adapters for this model, so our company decided to purchase an order of new Power adapters from a different company (cost of power adapters from HP in bulk was too high). Once we got them, we tested a few of them on different laptops and they seem to be working fine. After a few months, we've started to get notices from our clients that weird issues started to happen with the new power adapters, the main one being that the mouse cursor started to move sporadically across the screen and rendering it useless to work with, but only when the laptop was charging a battery. Without a battery it doesn't cause this issue, nor when the battery is fully charged. So I lined up about 20 laptops of the nx6110 model, and plugged them all in with our new power adapters, and charged them fully while playing with the mouse cursor. I'd have to say about 10 of them were causing these massive cursor movements, which made it extremely hard to do anything while this was happening. Here are the specs for our old power adapters, and our new ones:


Old:

HP power adapter
input: 100-240V ~ 1.6A 50-60Hz
output: 18.5V === 3.5A

New:

Mayday Tech adapter
input: 100-240V~ 1.5A 50-60Hz
output: 18.5V === 3.5A

Now I did notice that our old ones had a .1 amp higher in input in power. Would that small different in Amp input be enough to mess around with the cursor? And why does it only do it when charging a battery? Again, it doesn't seem to be affecting every machine I test it on, but a large enough number to cause problems.

Thanks for your time, hopefully someone here has experienced this before and could point me in the right direction as to what I should do.

Terrister

I have heard many a nightmare story about using 3rd party power supplies on laptops.
I think my 1st action would be contact the manufacture or company you bought them from. Are they under warranty?

JF2049

Yes they are, we just purchased them 3 months ago.... sending them back is our last resort option, just because rounding up thousands of ac adapters from each district is going to be a nightmare in itself. But right now I'm thinking its our only option haha.