Question about Dell E173FP 17" LCD Flat Panel Monitor

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Dell 15 inche E173FPc .The power light keep blinking and so cannot come ON.This p roblem comes most often.I do change the capacitors but with no improvement.

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You need to check the four transistors (c5706/5707) for shorts (it shoould more than 1000 Ohm in circuit or open out off the circuit between Emitter and Collector).
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:
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:

Capacitors kit: he can make you a set of caps for you.
Replacement board:

Posted on Oct 17, 2010


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2 Answers

Will not switch on, no green light totally dead?


These units are known for having issues with the internal power supply board. There are parts called capacitors that fail due to heat buildup in the monitor case. When they die the power supply stops working and you get a dead monitor just like you have. If you can solder then you should be able to repair your unit. We have a free step by step repair guide posted on our web site at: The repair should take less than 20 minutes to do and cost less than $15 for parts.

I hope this helps, if so please rate our solution.

Corporate Computer

Sep 15, 2010 | Dell E173FPc 17" TFT LCD Flat Panel...

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Dell flat screen monitor E173FPc I put the power on and it comes on but the display turns off after 2 secs while the power light is still on

godiac, What does the flashlight trick tell you? I suspect that the "switch-mode-power-supply" has detected a fault with itself or the CCFL "inverter supply" and is now in partial of full shutdown trying to save itself from a catastrophic, nonrecoverable failure. e.g. sparks, smoke, fire. Learn flashlight trick for gross status check of unit's SMPS! It might be possible to repair(refurbish) unit for $8 on a DIY quest! If no warranty available or no possible DELL cash+old for refurbed unit then look into doing DIY fix. Follow leads in other responses in my FIXYA profile to help you make decision. 12fixlouie aka louie12fix

Dec 31, 2009 | Dell E173FP 17" LCD Flat Panel Monitor

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I have a Dell E173FPc monitor. The power flickers on and off.


The blinking power light usually indicates a blown power supply board. We have a step by step repair guide posted on our web site at: If you don't want to do the repair yourself we do offer a repair service. If you have any questions just contact us at the address below.

I hope this helps, If so please rate our solution.

Corporate Computer

Nov 23, 2009 | Dell E173FPc 17" TFT LCD Flat Panel...

1 Answer

Del e173fpc 17" power light comes on but screen black.


The issue you have is caused by a bad power supply. If you change the following capacitors on the power board you should be back running again. C925 and C924 are 470uf 16v and C922 and C923 are 1000uf 16v be sure to use high temp capacitors not just standard that you would find at Radio Shack, if you do they will blow again with in a month or two. We have a parts kit available and I will have picture posted on our web site at :

I hope this helps, if so please rate my solution.

Corporate Computer

Sep 05, 2009 | Dell E173FPc 17" TFT LCD Flat Panel...

1 Answer

Dell Blinking Power Light

Hi There,
I have worked on several of the Dell 17" and that is almost always the Capacitor problem.

The caps have died inside, and they can be replaced. If you have basic electronics skills, you can go in, order replacement caps, and unsolder and resolder. If you can't do it yourself, you can take it into a shop.

If you can get inside the frame of the monitor, and disassemble, you can find the caps by seeing a bulge on top, or even a rusty looking material on the top. Be VERY careful around the high voltage section if you do go inside.

Here is a link to the Cap plague that explains what happens in detail. But I repair these all the time with that symptom.

Apr 04, 2009 | Dell E153FPf 15" TFT LCD Flat Panel...

1 Answer

Dell E173FPC Monitor stays black and the Power switch cycles

You need to disasemble and check for dry or burn capacitors first then check for the transistors near the inversors.Good luck

Apr 03, 2009 | Dell E173FPc 17" TFT LCD Flat Panel...

1 Answer

Dell e173fpc

That is a slightly different power supply board if it is the one I am thinking of.l It is similar in style but there is a 1000mf 16v capacitor that once you replace it it will work.

Mar 22, 2008 | Dell E173FP 17" LCD Monitor

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