If you have a Dell E172FPc monitor that either has a blinking power light or a very dark picture then this should help get you back running. Below you will find a full walk thru on repairing your LCD monitor. To do the repair you will need the following tools: Soldering iron, de-solder braid, Phillips screwdriver, flat blade screwdriver. You will also need the following electronic parts: qty(2) 220uf 25v capacitors, qty(2)  470uf 16v capacitors and qty(2) 1000uf 16v capacitors . We sell a repair kit with all of the parts for $12.00

If you don’t want to do the repair yourself, contact us about servicing the monitor for you. Most monitor repairs run $30-35 plus return shipping.

Here we have a non functional Dell E172FPc 17″ LCD monitor. This one has a blinking power light and no display.First you need to remove the power cable, signal cable and the stand. To remove the stand remove the 4 screws as shown in the picture to the right. After the stand is off the signal cable can just be unscrewed.After the stand is removed you will need to pry the back of the case off as illustrated in the pictures below. Use a small flat bladed screwdriver start at one of the release openings on the bottom as shown. Once you have a little gap in the case just pull the 2 halves apart and work your way around the screen.

After the screen unit is removed from the plastic case we can get down to the repair. We need to remove the power supply unit. First remove the 2 metal shields as shown.You will need to unplug the 4 backlight connections (connectors with pink and blue leads, circled in yellow) and the control panel cable the flat signal cable. Then remove the 2 screws from each end. You will also have to unscrew the vga connector and power socket.After the metal shield and electronics are removed from the LCD panel you can remove the 5 screws that hold the power supply/inverter board in place. Carefully remove the board from the shield and unplug the cable that connects the power board to the video driver board.With the power board out you can see the parts that will need to be replaced. The 6 capacitors that you need to replace are circled in yellow on the picture to the right. You will need to be careful when inserting the new capacitors into the board and put the negative stripe on the side of the cap going the same way as the old one faced. Unsolder the old caps and solder in the new ones, reassemble the monitor and test.After the parts are replaced just reverse the procedure to reassemble the case. Now apply power and you should have a fully functional monitor again.

15 Comments on Dell E172FPc / E173FPc Repair

John Smith on Tue, 30th Mar 2010 6:43 pm


Are you sure the smaller caps are 220 uF? I am in the process of replacing mine and they are 150 uF on my board. I am curious if yours were the same or if they were actually 150 uF like mine…

John Smith on Tue, 30th Mar 2010 6:46 pm


The ones I was referring to were C201 and C223 btw…

admin on Tue, 30th Mar 2010 8:37 pm


A few of the power boards used 150uf caps but Dell quickly upgraded them to 220uf because the 150uf caps were dieing to quickly. If your board still had the 150us caps them you were very lucky they lasted this long.

dan on Tue, 6th Apr 2010 8:27 pm


I have the problem of the picture coming on for a second and then dark. The green light goes orange. Is the fix above the same???

CCL_TECH on Wed, 7th Apr 2010 9:34 am


This type of problem could be the power supply caps or the backlight bulbs could be failing and shorting the power supply board. If you open the unit up and look for the bulging caps on the board. If you see them then most likely thr problem is the caps, if they look good with not bulging tops them its the backlight bulbs. If the problem is the backlight bulbs then the unit may not be worth repairing, you will need to get the bulbs with are very fragile and dismantle the LCD screen to replace them. The best thing to do then would be to get a replacement LCD panel.

Mesiti on Thu, 20th May 2010 6:13 pm


A certain store only has carries 35V for all capacitors listed above. Will anything bad happen if I installed these to the circuit board?

HCG on Mon, 24th May 2010 8:47 pm


Hello, Have the E172FPc, Power button flashes Green/Amber very quickly..
Caps all look good, no bulge or leaking….
Should I try Replacing the Resistors or Transistors.
Thanks

admin on Tue, 1st Jun 2010 1:35 pm


On all of the E172FPc unit we see here, about 95% are capacitor problems. We would try that first.

admin on Tue, 1st Jun 2010 3:05 pm


You can use 35V capacitors in place of lower voltage one but be sure that they are also low ESR, high temp and high ripple current types. Most local places like Radio Shack and Fry’s only carry general purpose types that will damage the circuit if used.

HCG on Tue, 1st Jun 2010 5:42 pm


It was an E173FPc not the 172, my mistake.
Would you replace the capacitors on this model as well.
And it’s $12 for these capacitors?

Paul on Sat, 10th Jul 2010 3:36 pm


I have the exact same problem with my monitor only it is a E171FPB. What capacitors do I need to do my repair?

Thanks!

admin on Sat, 10th Jul 2010 3:42 pm


The Dell E171FPb issue is caused by faulty MOSFet Transistors not capacitors. We have the repair guide for that model posted here: http://www.ccl-la.com/blog/index.php/dell-e173fpb-17lcd-repair/

Lodog on Wed, 25th Aug 2010 3:20 pm


Be Sure to check for some bad solder jounts on the bottom of the board. These monitors are notorious for bad solder joints. I had several that were questionable and one that looked as if the solder had been crumbled/burnt away.

mike on Mon, 17th Sep 2012 11:11 pm


thanks for the walk through and the parts, placed an order a couple of days ago for the repair kit and just completed this fix and my monitor is working great. thanks so much.

samuel on Sat, 4th May 2013 9:48 am


Thank you very very very much. I fix it.

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