Hi all. Have a DV4 for my wife that I literally got from a friend - decided to give my wife after fixing up. Realized that the screen doesn't come on and after opening it up it seems like a resistor is burnt. Problem is that I don't know the value or the number on the board. Any help finding this would be greatly appreciated. Thanks in advance.
Help Finding HP DV4 Resistor
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Re: Help Finding HP DV4 Resistor
Can't edit my original message..........Here are the pictures bigger. Didn't realize clicking the thumbs here wouldn't open the page to the originals.
And direct links just in case as well.
http://s162.photobucket.com/user/kha...d388b.jpg.html
http://s162.photobucket.com/user/kha...22836.jpg.html
http://s162.photobucket.com/user/kha...9e938.jpg.html
http://s162.photobucket.com/user/kha...a6049.jpg.html -
Re: Help Finding HP DV4 Resistor
What is the full model number / main board number I have looked at the schematic for one DV4 and there are no components with that series of numbers.Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
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Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740Comment
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Re: Help Finding HP DV4 Resistor
I didn't check back here for a while - sorry - didn't get any email notifications for the subscription for some reason. Since then I've done a bit of checking and decided to try something. The missing resistor on the RIGHT in the LAST PICTURE was replaced using a 3.9 ohm resistor - I wanted to get 3.5 kilo-ohm but couldn't since the stores locally don't carry a large variety. Since I've done this the laptop screen has been working without an issue. It should be noted that though the resistor on the LEFT of the missing one is burnt I tested it and got 3.5 kilo-ohms from it. I need to do some verification and pics will follow later on. Maybe. Since it's already assembled and such. But if you guys think it will help for me to show the exact things I'll open it back up and show pics of the readings and everything. Or maybe I'll just do it for helping out.
In the pic posted I see where LVD8_A2+ and LVD8_A2- actually have continuity. On the points closest to them on the board where the burnt and missing resistor are I get continuity on either one.Comment
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Re: Help Finding HP DV4 Resistor
So with the 3.9 ohms resistor the screen works flawlessly when plugged in and occasionally trips out when not plugged in. I'll probably change it to one of the 3.9K ohms ones I have later today. When I do that I'll take pics and post how I did it.Comment
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