Dell E173FP 17" LCD Monitor "c5707 testing" Questions

Gone from blinkid led to lights out. Hi, I did do the C5707 transistor change, and I went from blinking LED to lights out after 2-3 sec. It starts fine, but backlight disappear after 2-3 sec, I can ...

...testing) then I saw Q759 (C5707) get hot. Checking the others shows that they should be driving into about 420 ohms on the primary side of the transformer for the flourescent lights (backlights) but ...

...on board or remove to test ? many thanks for your help viziks....andy If you are referring to the C5707 inverter driver transistors, you can test them in circuit with an ohmmeter. Usually one pair ...

...C5707 transistors were replaced and you save the other two. I had burn in test this LCD monitor for many days and it worked perfectly fine. Conclusion- Whether you repair the DELL E173FPB LCD Monitor ...

still no display the voltage output of PQ3RD23 is 3.3V. i've tested all four c5707 transistor. One of them is shorted so i replaced it with a new one. Still no display on my LCD. what could be the ...

...displey no hace su self test Look for bad fuse (more than one Ohms reading), shorted transistors (c5707/5706), see pictures here: ...

...there are 2 (there are 4 connectors). I would doubt both are bad. Is this likely the dreaded 4 C5707 xistor problem or something different. How does one know if the Cclf's are bad or not??

...in these Dell monitors (made by BENQ) are due to poor solder joints and shorted out transistors (c5707/5706) in the inverter circuits. See pictures of failed Dell monitors for guide: ...

...blinking Green but you did not state which ones to look for that maybe damaged. Are they the small C5707 ? These are the only one's I can find that are a set (2 sets of 2: Q739,740,759,760). One set ...

...just tried to push a 220$ warrenty on me which costs more then a newer better monitor Check the C5707 transistors especially its corrensponding hfe value. Replace caps Try to resolder all ...