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Dell Latitude D830 video output

Dell latitude D830 put a  brand new lcd screen that works  and  LCD ribbon cable but somehow  still no  video  output on the screen  but when i plug into  monitor it works just fine...it was the same problem  before i put a new lcd screen never got to see a  video output to the laptop  but when its plug in to a monitor  you can see the log in screen
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dannymyung
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dannymyung
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1 Solution
 
garycaseCommented:
Good display out => the video adapter is working.

There are really only 4 possibilities:  (1) the inverter;  (2) the backlight; (3) the panel itself; or (4) the cabling.    If you've replaced the panel and it's backlight, and are confident you have a good ribbon cable properly connected; then the issue almost certainly has to be the inverter.
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shadowmantxCommented:
Something to also try is toggle the video display by pressing FN + (usually F8 key).  I have seen that work a time or two.
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dannymyungAuthor Commented:
well i am  sure that  all the connectors are  plug in correctly. and even  i press  FN+F8 nothing  happen unless  i connect to  a lcd monitor then  i will get a output. This is just a weird issue and im thinking it could be the  connector from motherboard went  bad and  gonna need to replace the whole motherboard.
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garycaseCommented:
Have you replaced the inverter?   [They're only $20:  http://any-pc-part.com/product_info.php/products_id/103451 ]
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nobusCommented:
imo - it still can the video card circuitry on the mobo = bad mobo
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dannymyungAuthor Commented:
garycase: yes i replace  and put a new inverter on it.
nobus: i think  that might be the reason i am thinking the same thing
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garycaseCommented:
It's unlikely that the video card circuitry is bad -- you wouldn't get a good picture on an external monitor if that was the case.    It's far more likely that you've got a broken connector for the LCD panel's ribbon cable or broken traces on the motherboard where it was flexed while removing or inserting the cable.    Net result is the same however ==> you'll need to replace the motherboard.
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dannymyungAuthor Commented:
garycase:  thats what im afraid i had to do because i bought new lcd screen  including with the inverter and brand new  lcd ribbon cable  and did test the lcd screen i bought in another laptop  and it works  fine...so my guess is im gonna need to replace  the MOBO..its just i already  spend more than a hundred bucks on it...
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garycaseCommented:
Not much choice if you want to fix the laptop ... unless you never move it, in which case you could just use it with an external monitor.
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nobusCommented:
if you suspect the cause is a broken connection on the mobo, you can examine it closely with a magnifying lens
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