I have a machine display detecting signal line, I changed the other display that is connected to the host line no problem for the computer display and there is no problem that is about the display it bad but I'm aware search when you see some people say that the detection signal line that displays no problem ah, you to help analyze what is not bad monitor, display signal line, if broken display would be what a bad place?
The estimate is that the pins in the display signal plug are broken or shortened, or that the pins and wires in the plug are broken.If you change the display after the show host is no problem (i.e. the host card no problem), it is certainly caused by the signal line inside the solder joint fracture, solder joint or signal line in the display circuit board has broken place.
When the monitor prompts to check the signal line, the video signal is not received by the monitor at this time. The solution is as follows:(1) first, confirm the display no fault, then check between the display and graphics plug is off, the plug try again.(2) will open the main chassis, check whether the normal operation of the graphics card fan, check whether the card from the independent out of the slot (integrated graphics except), and then pull out the graphics card, with a soft cloth to wipe clean the metal antenna card after inserted into the slot, to see whether the normal.(3) the memory out of the memory slot, with a soft cloth to wipe clean after re insert.(4) check the capacitor on the card or motherboard to see if there is a capacitor, a drum, or a burst. If so, solder it down and replace it with a new one.
Boot the computer, see the "signal line" on the LCD screen, that is to say no host image signal input to the screen, there are three reasons: (refer to the following processing method)The first reason: there may be bad contact host and display connections (especially at the interface is not plugged in or loose), there may be the root of data connection line problems, so there is no signal input to the screen, black screen, no display processing method: to re plug the root data connection line or replace the cable.Second reasons: due to the formation of an oxide layer on the surface of the finger memory or graphics card, the memory and the memory slot is bad, with bad graphics and graphics card slot, causing a black screen, no output signal:Processing method: first off, open the car, the memory dial out, use the eraser to finger position (i.e. a copper place) wipe back and forth a few times, and then inserted into the memory slot (or memory for a slot, back) ok, if the independent video card you can also use the same, the graphics processing method, and then inserted into the card slot, finally installed, restart the computer on the OK, (from memory pictures as follows:)The third reason is: the memory card appears to weld down the main chip performance, graphics BIOS confusion, IC power supply problems, will cause the card does not work, it is bad card, the computer will naturally no output signal, it cannot display boot on the black screen, Jian Yi, repair card, or replace the video card.
