NotebookForums.com › Forums › Notebook Manufacturers › HP, Compaq and Voodoo Forums › HP, Compaq and Voodoo Notebooks › HP Pavillion XH485 cold cathode lamp
New Posts  All Forums:Forum Nav:

HP Pavillion XH485 cold cathode lamp

post #1 of 4
10/6/04 at 9:02am
Thread Starter 
I have the laptop described in the subject and either the cold cathode lamp is burned out or the inverter is no longer working. In any case the screen is dark. I am trying to order a new lamp but I don't know what type to buy or where I can find it. I've measured the bulb and it's roughly 2mm x 308 mm. Does anyone know where I can find this lamp? I've tried digikey.com I can't find a bulb with those dimensions there.

Thanks for any help.
Reply
Reply
post #2 of 4
10/20/04 at 5:29pm
most of these bulbs arent propietary for the screens.. A standard 2mm bulb.. from the same dimension screen will generally work. I repaired a newer Z1A sony screen last week, (backlight blew).. With a tube from a compaq 1200US screen.. Worked excellent, Saved the guy 500.00. (Sony told him he had to replace the screen).. www.ikenfixit.com
Reply
Reply
post #3 of 4
10/20/04 at 11:28pm
Thread Starter 
Quote:
Originally Posted by ikenfixit
most of these bulbs arent propietary for the screens.. A standard 2mm bulb.. from the same dimension screen will generally work. I repaired a newer Z1A sony screen last week, (backlight blew).. With a tube from a compaq 1200US screen.. Worked excellent, Saved the guy 500.00. (Sony told him he had to replace the screen).. www.ikenfixit.com
Thanks. How can I be sure it's the bulb and not the inverter?
Reply
Reply
post #4 of 4
10/22/04 at 6:53am
Inverter is the first thing to check. If you have a screen laying around with a known good backlight you can plug in the cathode and fire it up.. This is th easiest..I have an HV probe that conects to the DVM to check output voltage. (Dont try and do this w/standard Meter0.. Unless it rated for 2k AC..Yours must be a 15? I may have an inverter here. Have to dig.. www.ikenfixit.com
Reply
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: HP, Compaq and Voodoo Notebooks
NotebookForums.com › Forums › Notebook Manufacturers › HP, Compaq and Voodoo Forums › HP, Compaq and Voodoo Notebooks › HP Pavillion XH485 cold cathode lamp