Laptop LCD Inverter Board?

  • Thread starter Thread starter Davej
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Davej

Is anyone here familiar with LCD backlight circuits? I have an old
Dell D600 laptop where the backlight circuit is apparently dying and
it occurred to me that I might be able to repair it because I have
another dead and discarded D600. Then I saw this:

http://www.ebay.com/itm/New-Dell-Latitude-D600-D610-D810-Lcd-Backlight-Inverter-/310289164361

So is the backlight circuit in a typical laptop an entirely separate
board? That makes the possibility of a successful repair much more
likely.
 
Davej said:
Is anyone here familiar with LCD backlight circuits? I have an old
Dell D600 laptop where the backlight circuit is apparently dying and
it occurred to me that I might be able to repair it because I have
another dead and discarded D600. Then I saw this:

http://www.ebay.com/itm/New-Dell-Latitude-D600-D610-D810-Lcd-Backlight-Inverter-/310289164361

So is the backlight circuit in a typical laptop an entirely separate
board? That makes the possibility of a successful repair much more
likely.
Click to expand...

Maybe of interest;
http://www.fonerbooks.com/laptop_6.htm

Look at Dell D600, User Guide/Service Manual here;
http://support.euro.dell.com/support/edocs/systems/latd600/en/index.htm
 
Davej said:
Is anyone here familiar with LCD backlight circuits? I have an old
Dell D600 laptop where the backlight circuit is apparently dying and
it occurred to me that I might be able to repair it because I have
another dead and discarded D600. Then I saw this:

http://www.ebay.com/itm/New-Dell-Latitude-D600-D610-D810-Lcd-Backlight-Inverter-/310289164361

So is the backlight circuit in a typical laptop an entirely separate
board? That makes the possibility of a successful repair much more
likely.
Click to expand...

Yes, it's a separate board. The larger the LCD panel, the more
CCFL tubes and associated inverter boards. An inverter board
can also have more than one inverter circuit on it.

On a large panel, you might see one or two tubes go out,
while the others remain lit. Then you have to trace down,
which one is doing it. Use tape or a marker, to keep track
of which areas are lit and which aren't. You may find a
common inverter, is connected to the wires on those dark
tubes.

Paul
 
Davej said:
Oh, the inverter board in inside the lid with the display.
Click to expand...

Yup, so the high voltage cable, CCFL, and inverter are
right next to each other. It would be pretty ugly to
run such a cable through the hinge.

Paul
 
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