Having problems with your Computer Monitors ?

I have 2 daytek f19ah monitors. Both fail the same way. the display comes on for 2 sec then goes off. the flashlight trick show a working display. what needs to be replaced on the power supply? thanx..

Answers :

\015\012If the first solution presented does not fix your problem, measure the resistance of the output transformer to the backlights. The transformer is a twin transformer with the inputs in the centre and the output to the extremeties. The centre should read .2 to .4 ohms and the output 750 to 800 ohms. If the outputs are not similar (i.e. one is opened or a large difference) your transformer is gone. Other probable problem is one of the four backlights is burnt. The way to verily is to substitute one backlight from a known good monitor. No need to remove it from the other monitor, just move it close enough to substitute (connect) the other backlights and eliminate the bad one. (They are a good job to change but feasable) . Bye
Try replacing the capacitors on the power board, and in the inverter circuit. Often this will get them to work. If not, you may find two surface-mount transistors on the board that drive the stepup transformers for the lights. These also go bad and may need to be replaced.\015\012\015\012Good luck.
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