hello everyone.
trying to found the problem in the Q5x3 power bord of my benq FP547 monitor.
the problem started with black screen every few minutes . but soon become black permanent.
conecting to power and a signal, giving a green light (recognize the signal).
i changed 2 puffed cap's. with no chang.
checking the voltage on bord:
the V-inverter is 13.3v (is that OK?). but no power is geting in to the 2 small transformers (cant see any Voltage after the fu9024n mosfet-[ Q751 and Q743 on the diagram]) .
I changed the 2 couple of transistors [Q759,Q760 & Q730,Q740 on diagram] (should be 2SC5706. but I got only the 2SC5707 that was available at store ) and replaced the 2 fu9024n mosfet. but no chang.
I'm working with the diagram, but don't have any clue what to do next.
any help or idea?
the q5x3 diagram :
trying to found the problem in the Q5x3 power bord of my benq FP547 monitor.
the problem started with black screen every few minutes . but soon become black permanent.
conecting to power and a signal, giving a green light (recognize the signal).
i changed 2 puffed cap's. with no chang.
checking the voltage on bord:
the V-inverter is 13.3v (is that OK?). but no power is geting in to the 2 small transformers (cant see any Voltage after the fu9024n mosfet-[ Q751 and Q743 on the diagram]) .
I changed the 2 couple of transistors [Q759,Q760 & Q730,Q740 on diagram] (should be 2SC5706. but I got only the 2SC5707 that was available at store ) and replaced the 2 fu9024n mosfet. but no chang.
I'm working with the diagram, but don't have any clue what to do next.
any help or idea?
the q5x3 diagram :