Welcome, Guest
Please Login or Register.    Lost Password?

Compaq v3500 amd no lcd display..
(1 viewing) (1) Guest
Go to bottomPage: 1
TOPIC: Compaq v3500 amd no lcd display..
#75
alms
Fresh Boarder
Posts: 7
graphgraph
User Offline Click here to see the profile of this user
Compaq v3500 amd no lcd display.. 7 Years, 7 Months ago Karma: 0
i connect to external monitor also got no display, only when i take out the lcd cable, the external monitor got display. already swap lcd cable, lcd and k154(8p qfn). i suspect something short on the chip.
 
The administrator has disabled public write access.
#76
timtom
Fresh Boarder
Posts: 7
graphgraph
User Offline
Re: Compaq v3500 amd no lcd display.. 7 Years, 7 Months ago Karma: 3
Not necessarily. It all depends on what monitor propertys switch on a laptop. On LCD you have no image at all or not only backlight?
 
The administrator has disabled public write access.
#77
alms
Fresh Boarder
Posts: 7
graphgraph
User Offline Click here to see the profile of this user
Re: Compaq v3500 amd no lcd display.. 7 Years, 7 Months ago Karma: 0
There is white color on the screen. I Check all the 3.3v at the lcd connector, but i couldn't determine which one is the correct voltage for each pin.
Why there is display on the external only when i take out the lcd connector? But no display on both after i plug it the lcd connector.
 
The administrator has disabled public write access.
#78
timtom
Fresh Boarder
Posts: 7
graphgraph
User Offline
Re: Compaq v3500 amd no lcd display.. 7 Years, 7 Months ago Karma: 3
Usually the white screen is if there is no voltage on LCD matrix. Check should be on the board of the matrix, so as there may still be fuse or input transistor. So us may be cable defects. Voltage DCBATOUT_LCD pin numbers 38,39,40 and brightness pin 33( motherboard connector). Check whith the oscilloscope on the lines of LVDS, is signal there? If all voltages and signals is on the LCD matrix board then is the matrix defect, if no some signal, may be bad contact on the motherboard, or MCP67 defect.
 
The administrator has disabled public write access.
Go to topPage: 1
Moderators: Administrator
JoomlaWatch Stats 1.2.9 by Matej Koval

escort izmir