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How to repair an LCD Monitor ?

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phatcreators

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How to repair an LCD Monitor ?

No display , my LCD monitor is showing no display ... what's the problem & how to resolve this problem ?
 

phatcreators said:
No display , my LCD monitor is showing no display ... what's the problem & how to resolve this problem ?
Click to expand...
Do you have a second LCD display available? If so, substitute the old LCD with the new one and see if the problem really lies on the display.
If you don't have a second display available, then use the osciloscope to check if the signals involved with the LCD functionality actually reaches its pins.
Was the LCD working fine until now and suddenly stopped?

Alexandros
 
yes it was working fine and suddenly stopped
no i would have to arrange the second one and it take 2 to 3 days
which pins are you referring to ? and what should be the peak & voltage of the signals ?

thanks
 

phatcreators said:
yes it was working fine and suddenly stopped
Click to expand...
Although it did not happen to see a case where LCD stopped working, there is the possibility of a broken LCD, since it was working until now. This is what you need to find out.


phatcreators said:
which pins are you referring to ?
Click to expand...
DB0-DB7, E, R/W, RS, VSS, VDD.


phatcreators said:
and what should be the peak & voltage of the signals ?
Click to expand...
That should be written in the LCD's datasheet, absolute maximum ratings section. If you are having a hard time finding that out, you could post the datasheet.
 
Hi, I have a problem that when my lcd monitor working properly my brother suddenly push it down,then i took that lcd and switch on it, It will work fine, but yesterday its not work what is the problem..
 

Brand---> LG
Model----> M2062A,

Its working some time but suddenly switch off that's the problem..
 

I think the problem may be bad solder joints in the monitor's circuit board. Check also electrolytic capacitors in the power supply/CCFL inverter circuit.
 
wjames811 said:
Brand---> LG
Model----> M2062A,

Its working some time but suddenly switch off that's the problem..
Click to expand...

there does noy seems to be recurrent problem with these monitors.
like misterrf said, check for bad soldiers, check capacitors (search for bulky ones)
if you have an esr meter, check the electrolytics with it
if you dont have anesr meter, check on my web site to quickly build a cheap one : **broken link removed**
then check the capacitors.
 

Ok i will try this, But here not a problem in capacitors and all...
 

dried capacitors, or too high esr capacitor are 98% of today's faults in electronic equipments
and then a dry capacitor can lead to a transistor failure, and so the switch off of your monitor ...
 
Ya ok fine, But my capacitor didn't dry...Its working fine..
 

Im ever to repair dell lcd monitor lcd blank ... I replaced the transformer high voltage and the results are ok .. I have returned to normal lcd

dell.jpeg
 

Does the led on the monitor blink when it is connected to the main supply.
 

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