IBM Thinkpad T23 - unable to get external monitor to work
Unable to get external monitor to work after doing so successfully for years. When I hit F7 the lcd goes black, but there is no picture on my external monitor. 1. How do I determine if this port is burned? 2. If it is burned can it be repaired?
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Re: IBM Thinkpad T23 - unable to get external monitor to...
Some times the conector for the external monitor has the pins bended or brocken try with diferent monitor if the por is burn there is a minimun of chance to trpair it only if you are expert on electronics and you can get the computer diagram and you know how to do the test and get the replacement other ways you have to get a new motherboard
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Virtually all IBM and Lenovo ThinkPad and ThinkCenter laptops allow you to hook up an additional monitor or projector to the computer. When you add an external monitor or projector to your notebook, you can choose to view the display on the computer, on the external device, or on both the laptop and the external monitor or projector at the same time. Toggling between viewing devices is as simple as pressing a couple of keys on the keyboard.
Connecting an External Monitor or Data Projector You can switch to anexternal monitor or data projector by two methods.1. Connect the externalmonitor to the laptop's video port, power up the external monitor first and thelaptop. The video information will automatically switch to the externalmonitor.2. If you power up thelaptop first then you can switch the video output to the external monitor bypressing the Fn key and one of the Function keys, depending upon your make andmodel laptop. You can also toggle between the external monitor or both LCD screenplus the external monitor or back to LCD screen only by pressing the Fn keyplus one of the function key. Here is a list of keycombinations for some of the laptops :-IBM ThinkPad = Fn + F7HP and Compaq = Fn + F4Toshiba = Fn + F5Dell = Fn + F8
Try attaching an external monitor to the laptop & see if you could get any display on it. If this is successful, then you might have either a faulty LCD cable or screen inverter board. The
LCD cable transfers data signal from the motherboard & video card
to the LCD screen. It also supplies high voltage DC power to the screen
inverter board. The screen inverter board works as a power supply for
the backlight lamp mounted inside the LCD screen. It converts low
voltage DC power to high voltage AC power needed for the backlight lamp
Most laptops have a blue external 15pin video connector. Connect an external monitor's video cable to this port, then power up the external monitor first then boot up the ThinkPad, the video information will automatically divert to the external monitor first.
You can toggle/cycle the laptop and external monitor so they display on both the laptop and external monitor or the laptop LCD screen or external monitor by pressing the blue Fn key and then the F7 key several times.
Test with an external monitor. If it works, it is the display's backlight or inverter board.
If you were experiencing discoloration in the screen (pinkish lower light hues) before it failed, that would indicate a CCFL backlight issue. If the screen suddenly went dim on you rather than a slow degradation the inverter would be indicated.
Yes, connect the external monitor to the port it corresponds on the laptop, usually the blue port. When you boot the computer hit the FN key located on the bottom right hand side of your keyboard and the LCD/CRT key i believe this will be the F4 key located on the top part of your keyboard this should activate the external monitor.
Right captain :-) Go to -> desktop -> right click -> property -> Screen saver -> power??? for the screen -> advanced “when I close the lid - - “ DO NOTHING…. :-) Regards Teis -Do vote before you leave, thank you
Function F7 will enable the external video monitor connection and will toggle between the screen, the screen plus external monitor, and the external monitor only. Try hitting function F7 and see if that helps. Also there is a small switch that is activated when you close hte lid to turn off the display when the lid is closed. make sure that this little switch is not stuck.