Question about Dell E172FP 17" LCD Flat Panel Monitor

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My E172FP went out and the monitor on/off light is blinking green.

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It had shorted out transistors in the inverter circuits, that will be the first palce to look.
If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed DELL monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.

Basic LCD monitor troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Replacement board: http://www.lcdrepair.us

Posted on Oct 17, 2010

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1 Answer

Monitor green light is on but no image what's the problem?


Pretty good bet that your monitor power supply has bad caps. There are about 6-10 caps that age and "bulge". The fix is simple. Google it. Total cost to fix (if you know how to solder) is probably less than $2.00.

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I have a blank Dell E173FP monitor with the green blinking light. I have ordered and received the repair/replacement parts. Can someone please respond with detail instructions to fix the problem? Thank...


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.
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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.

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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.
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That sounds like the backlight inverter board. Check ebay for the board or a repair kit for it.

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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.

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