Connect with us

Hot Cathode vs. Cold Cathode tubes..

Discussion in 'Electronic Repair' started by Free Spirit, Oct 8, 2003.

Scroll to continue with content
  1. Free Spirit

    Free Spirit Guest

    I've got an old LCD monitor made for IBM that uses HCF backlight
    tubes, I cant find replacements for them anywhere..
    From my research, you cant just drop in CCFL's in place because
    the startup voltages and run currents are different.

    What to do??

    Anyone know of source for 360mm HCFLs? the OD of the tube is 5mm,
    a bit thicker than the usial 3mm CCFL tube.
  2. Andre

    Andre Guest

    There are small HV ceramic capacitors on the secondary of the
    transformer that help to regulate the current through the tubes. Might
    be possible to change these and thereby get around the problem (at
    least in principle) .

  3. Leeper

    Leeper Guest

Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day