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yumaparkie, You mean to tell me you haven't been to YOUTUBE to see all the video clips of Dell E172FP, E173FP lcd monitors being repaired?? Do that first, then come back here if you still need help.
Disconnect the display from the Computer and remove its power plug. While the display is turned off, press and hold the power button for 30 seconds. After two minutes connect the power cord and the display cord to the Computer and the power source and turn it ON.
If the power indicator on the display keeps blinking, then it's required to open it up to repair it.
You need to open the monitor and check to se eif any of the capacitors
on the power board are bad. Common problem for LCD monitors. The bad
caps usually vent at the top (they will look bad compaired to a good
If they look bad then they will need to be replaced. I've seen this in
Dell monitors, so there's a good chance this will fix the monitor.
Take it apart, get the values on the sides of the bad caps in the power
supply pcb. Buy new caps, and de-solder the old ones and replace them
with the new ones. Don't forget to trim the leads afterwords.
I buy and sell these monitors (Dell E17FP) the problem is with the transisters (Q739, Q740, Q759, Q760) they short out and the monitor will just blink on and off. You have to desolder them and test them with a simple battery and light circuit. The reason they blow is because of the dirty solder joints by the transformers. If only on pair of backlights work the problem maybe transisters Q751, Q743. I home this answers your questions.