Can insufficient power cause monitor flicker? - Techist - Tech Forum

Go Back   Techist - Tech Forum > Computer Hardware > Hardware Repairs and Troubleshooting
Click Here to Login
Closed Thread
 
Thread Tools Display Modes
 
Old 04-29-2007, 03:11 PM   #1 (permalink)
Newb Techie
 
Join Date: Apr 2007
Posts: 3
Default Can insufficient power cause monitor flicker?

hi all
i have recently bought an Acer L100 small form factor PC. unfortunately i am getting monitor flicker. it is an issue with the PC as i have tried two different monitors (17 & 19" TFT) which are otherwise fine.

the flicker is barely noticeable when idling but gets much worse with CPU and particularly HDD activity.

the unit comes with a 90W external PSU, for the following spec:
AMD 64 X2 3800+, 1GB, 160GB HDD. integrated nV 6150 graphics.

only thing i can think of is that perhaps the power draw is too high with HDD seek / CPU activity - could this cause the flicker?

its a very compact unit so i thought there may be internal interference but have eliminated that. I've also eliminated external issues eg nearby speakers.

thanks for any help you can give...
__________________

drop_d is offline  
Old 04-29-2007, 03:38 PM   #2 (permalink)
Patron
 
saltynay's Avatar
 
Join Date: Dec 2006
Location: West Coast, Singapore
Posts: 5,149
Default Re: Can insufficient power cause monitor flicker?

is this a laptop or a small form pc??? as surely the monitor comes with its own power source??? the refresh rate is probably too low if the monitor flickers

Matt
__________________

__________________
saltynay is offline  
Old 04-29-2007, 08:56 PM   #3 (permalink)
Wizard Techie
 
Join Date: Jan 2005
Location: Delaware
Posts: 3,475
Default Re: Can insufficient power cause monitor flicker?

It could be a sign of overheating.
turtile is offline  
Old 04-30-2007, 08:56 AM   #4 (permalink)
Newb Techie
 
Join Date: Apr 2007
Posts: 3
Default Re: Can insufficient power cause monitor flicker?

thanks for getting back.

its an SFF PC so yes the monitor has its on PSU. though i assume the integrated graphics requires some wattage to produe the picture.

i agree overheating could be a possibility, system cooling is poor and the heatsink in there which is not the northbridge or CPU heatsink is really hot (ie too hot to leave your fingers on for more than a few secs).

however the flickering happens with CPU / HDD activity even if i use them as soon as its booted up, and is definitely related to CPU / HDD use - can't imagine the change in heat would occur so instantaneously.
drop_d is offline  
Old 04-30-2007, 05:01 PM   #5 (permalink)
Patron
 
saltynay's Avatar
 
Join Date: Dec 2006
Location: West Coast, Singapore
Posts: 5,149
Default Re: Can insufficient power cause monitor flicker?

use speed fan to find out the temps the power supply shouldn't be the trouble
__________________
saltynay is offline  
Old 05-03-2007, 08:51 AM   #6 (permalink)
Newb Techie
 
Join Date: Apr 2007
Posts: 3
Default Re: Can insufficient power cause monitor flicker?

speed fan says that one of the sensors is @ 60c. the HDD is also @ 60c and is positioned right above the integrated graphics.

so i think temp could be an issue, however can this explain why the flicker gets noticeably worse with CPU and HDD activity in particular, even when just turned on? - can it overheat this quickly / overheat in response to activity like this?
__________________

drop_d is offline  
Closed Thread

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Old Power supply Guide (2008) Ste New Systems | Building and Buying 223 12-12-2009 09:05 PM
power AC adapter with PC power supply? samuraiwarrior Hardware Repairs and Troubleshooting 0 04-23-2007 12:54 PM
NO power up at all. -Read- baseballfreakjc25 Hardware Repairs and Troubleshooting 4 04-16-2007 03:13 PM
Really Weird Power Boot Problem i_am_a_robot Hardware Repairs and Troubleshooting 1 04-10-2007 08:13 AM
just changed power supply, weird harddrive problem (sata) idrisguitar Monitors, Printers and Peripherals 0 03-31-2007 11:47 AM



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 10:04 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.