Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Electrical

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 05-25-2010, 07:50 AM   #1
Member
 
Join Date: Feb 2010
Posts: 128
Share |
Default

Lights/computer monitor flickering in boss's office


Let me start by saying I'm an HVAC guy with limited electrical troubleshooting experience. My boss called me last week to tell me that 2 of the 4 flourescent lights in his office have started to flicker. His computer monitor has as well. Said items will flicker for 10-15 minutes and then function normally. Two of the lights function normally all the time. Here is what I know for sure:
1. The lights used to be fed off of dimmers, but they have been replaced with standard switches.
2. There is a dedicated circuit feeding only his office.

When he first mentioned the lights I suspected the previously installed dimmers had negatively impacted the ballasts, but that doesn't explain the monitor. Any suggestions on what to look for? He's dead set on me at least "checking it out" before we call an electrician.

I have a good working electrical knowledge as it pertains to making my HVAC equpment run, and I have all the necessary test and diagnostic tools. This isn't the sort of problem I usually work on, but it is a good chance to earn a few extra atta boys from the big guy so I'd love to correct it! Thanks for the help folks!

brandonmcginnis is offline   Reply With Quote
Old 05-25-2010, 07:58 AM   #2
Member
 
Join Date: Nov 2007
Location: Nashua, NH, USA
Posts: 6,864
Default

Lights/computer monitor flickering in boss's office


Looks to me like a loose connection somewhere.

Could be as simple as a backstabbed connection to a receptacle having worked loose. Finding it could be time consuming.

__________________
Stop wasting time re-adjusting the pattern. Have several lawn sprinklers, one for each pattern.
AllanJ is offline   Reply With Quote
Old 05-25-2010, 10:10 AM   #3
Member
 
Join Date: Jun 2007
Posts: 3,503
Default

Lights/computer monitor flickering in boss's office


Lights, lights, and lights. Florescent in particular. Turn off the lights and see if the monitor stops flickering.
J. V. is offline   Reply With Quote
Old 05-25-2010, 12:27 PM   #4
Member
 
Join Date: Jul 2008
Location: NW of D.C.
Posts: 5,990
Default

Lights/computer monitor flickering in boss's office


If the lights are affecting the monitor you need RFI filters, but first check the AC voltage with a DVM. If it's OK, load it down with an addt'l known amp load and check it again.

Last edited by Yoyizit; 05-25-2010 at 12:31 PM.
Yoyizit is offline   Reply With Quote
Old 05-26-2010, 09:55 AM   #5
Member
 
Join Date: Feb 2010
Posts: 128
Default

Lights/computer monitor flickering in boss's office


It was an easy fix. The first thing I did was pop the cover off the four gang switch box. The flourescents were never on dimmers, three rows of can lights between the flourescents were. When they added the can lights (before we bought the building) the goobers didn't pull enough wire and USED THE METAL BOX/MC JACKETED CABLE AS A CURRENT CARRYING NEUTRAL!!!!! Literally, the neutral wires were jammed into the crack between two of the gangable boxes!!!!!

Two of the three dimmers were bad, so I powered all three switch legs (from another accessible box upstairs) with one dimmer, and used my extra switch legs, one for a true neutral, and one for an honest to goodness ground.

All better now! Thanks for the help guys, I love this site!
brandonmcginnis is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Heat issue in the office repoman HVAC 1 05-08-2010 11:12 AM
Custom Office Desk U Shape Materail? mfleming Carpentry 1 10-21-2008 04:19 PM
Best flooring for a car wash office? carwashremodel Flooring 6 08-23-2008 09:49 AM
New office in the basement sleepy23 Remodeling 3 08-21-2007 11:19 PM
Need Office Help :-) EricNush Interior Decorating 2 06-10-2007 07:54 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.