LCD Backlight Replacement

  • Thread starter Thread starter Davej
  • Start date Start date
D

Davej

After replacing the LCD backlight bulb in an HP G60 laptop (and finding the root cause -- a burnt mark indicating arcing between one end of the backlight and the grounded LCD frame) and also replacing the inverter board -- I still had no light.

After puzzling over this situation for a very long time I realized that the old bulb was still intact -- if I resoldered the end wire.

I tried plugging in the old bulb -- it worked. So the new bulb is defective, or I managed to damage it during the installation.
 
Davej said:
After replacing the LCD backlight bulb in an HP G60 laptop (and finding the root cause -- a burnt mark indicating arcing between one end of the backlight and the grounded LCD frame) and also replacing the inverter board -- I still had no light.

After puzzling over this situation for a very long time I realized that the old bulb was still intact -- if I resoldered the end wire.

I tried plugging in the old bulb -- it worked. So the new bulb is defective, or I managed to damage it during the installation.
Click to expand...

It's either not the right one for the job,
defective, or out of spec.

In terms of probabilities, you're more likely to
need a new inverter than a new CCFL tube. The CCFL tube
can last to around 25000 hours. The inverters vary in
quality.

You would hope when someone sells you a replacement
inverter, they sell CCFL tubes that match that inverter.
Increasing the odds that combining the two, new, purchased
items, will work.

Paul
 
It's either not the right one for the job,
defective, or out of spec.

In terms of probabilities, you're more likely to
need a new inverter than a new CCFL tube. The CCFL tube
can last to around 25000 hours. The inverters vary in
quality.

You would hope when someone sells you a replacement
inverter, they sell CCFL tubes that match that inverter.
Increasing the odds that combining the two, new, purchased
items, will work.
Click to expand...

I just opened the LCD up again to take a look and apparently I broke the new tube during the reassembly. That makes more sense than a defective new tube.
 
Davej said:
I just opened the LCD up again to take a look and apparently
I broke the new tube during the reassembly. That makes more
sense than a defective new tube.
Click to expand...

I guess your next laptop will have a LED backlight...

Paul
 
Back
Top