Having problems with your Acer Aspire 5100 Notebook ?

Lcd back light ptoblem

\015 Hi to all gurus out there!Mine is an acer aspire 5102 WLMI(~ACER 5100).Last\015\012night when I was watching a movie on my lappy the screen suddenly\015\012blacked out.When i turned down the volume, I heard a little hum and i\015\012tried turning off /on my display, it succeded for the 1st time but\015\012after some 10 min I heard the voice again and this time its completely\015\012gone! I googled reg this issue and found the possible causes wud be the\015\012inverter / back light (CCFL). I replaced them both but 'd no luck at\015\012all! i figured it out that the problem 's not either of these two but\015\012the inverter is not getting power supply.I changed the ribbon cable but\015\012again no use :(.I cud get the diaply well n good if i connect to an external monitor!also i do get power from the mother board to the inverter (19v and 2.5v) i guess 2.5 V is the control voltage to inc/dec the lcd brightness.But I dont get any voltage to the IC on the inverter.is that a problem eith the fuse on the inverter?\015

Answers :

Could be a problem with the mainboard, or the tube in the screen, or you recieved a dead lcd inverter.
\015\012If your not getting voltage to the inverter, but you can see a picture correctly on an external monitor, you may have a bad cable, or mainboard.
\015\012Check all fuses near where the lcd cable connects to the mainboard (you may need to look on the reverse (underneath side) of the board.
\015\012
\015\012On one acer I'm currently working on,(that had a smashed screen, I installed a replacement screen, and had the same issue. So I replaced the inverter - same. I tried a good test tube on the inverter - nothing. I then disassembled the notebook and removed the mainboard. On the opposite site to the lcd connector I found a fuse labelled F2 (near a larger fuse labeled F1). This has shorted out.
\015\012
\015\012I would test this before assuming the new inverter is dead.
\015\012I suspect that by replacing that you will get power to the inverter.
\015\012
\015\012Unfortunately I dont know the rating of the fuse, however. I presume 12v but no idea on amp rating
\015\012
\015\012Good luck
Try another inverter.
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