Electrical issues?

Greetings all I think I have a power issue with my home but I want to get your thoughts

I have a DV9335NR hooked to a 22" Acer monitor. Both items are connected to a APC battery backup. My problem is I have wavy horizontal lines running up my the external screen when the laptop is plugged in. If I unplug the laptop power brick the lines dissapear. To rule out my laptop I plugged my wifes old compaq laptop up to the external monitor with the same exact results. So I thought it might be a problem with the APC but I have the same results plugging directly to the outlet. I also tried different power supplies with the same results.

Any ideas??

P.S. Vista runs very well! I dont understand why most people say it doesnt

 

Ground loop in the house caused by the cable tv....

 

Are they only noticeable on dark backgrounds?

If you want, check out the link in my signature. I'm having problems with my system, although it's on an entirely different platform (mine is AMD based with GeForce Go 6150 graphics, yours is Intel based with GMA950 graphics). But one thing the two units has in common is resonating noises that only occur at certain power settings.

When you unplug your power brick, your system is automatically switching to a lower power state to save on battery power. On Intel systems, this causes a resonating noise. On AMD systems, it's reversed. The buzzing only occurs when the system is on full power (or when it's plugged in).

On my system, whenever I experience this power-related buzzing, I also experience external monitor picture degradation. Horizontal, fast moving static.

If you want to rule out external interference, just unplug your AC adapter. Leave your monitor plugged into your backup battery, and then unplug the battery (this way you are completely separated from your houses electrical, and are relying on your backup battery reserves). On your Intel system, you should be able to replicate the static by setting your system from "Maximum Performance" to "Power Saver".

 

Definately IS a problem with the laptop

 

Darn, you are right. Leaving everything plugged into the battery backup then removing the backup from the wall I still have the wavy lines.

How do I solve this?

 

Try plugging the laptop and monitor into the wall directly. Also, make sure you are using three pronged plugs...it almost sounds like something is not grounded correctly.

 

night 2004 the crazy thing is that if I use one of those 2 to 3 prong adaptors I can plug it in anywhere and not have the wavy lines. This makes me think it is a ground loop problem

 

OK now I am even more confused. When I plug the laptop directly into the wall the wavy line are reduced. When I plug it back into the APC htey come back in full. It's as if the APC is magnifying the problem Could that be???

 

well... try swapping the apc with another one ... maybe change wall plugs... if all else fails... redo your whole electrical wiring... use only copper wires and make sure they are correctly grounded... ... i did my flat by myself (about 10 wall plugs, another 5-6 switches so on) ... took 2 days... even included dual surge protectors ... peace of mind... priceless...

 

Will give your suggestions a try and report back.


I stand by my post regarding Vista..........It works well and you guys are chumps for not being able to figure it out