Introduction: Dell E172FPb LCD Monitor Fix
Problem: The monitor turns on for about 2 to 3 sec, is very dim and than goes blank but yet the power button is still green on the monitor.
Solution: Examine, diagnose and fix a Dell monitor with only a few tools and a repair kit bought of off ebay that consist of four (4) transistors and a fuse. Oh and all the hardware will run 5 bucks with shipping, instead 100$ for a new monitor.
- Philips screw driver
- Flathead screw driver
- Soldering tools
- Transistors x4
Step 1: Dismantle Monitor
Dismantling the actual monitor takes no longer than 10 min with very few components to worry about.
1. Unscrew the four (4) screws that attach the base from the monitor and remove the base stand.
2. Along the bottom of the monitor case use a flat screw driver (preferably a panel popper so not to damage the case) and pry apart the housing. Continue all along the monitors sides.
3. Once the back monitor panel is removed detach the power button cable.
4. Remove the front panel by prying the four (4) clips along the sides of the panel.
5. Slide the protective metal housing off the case.
6. Unplug the high voltage monitor plugs.
7. Unscrew the four (4) screws from the sides of the housing (two (2) on each side)
8. Slowly lift the housing and unplug the monitor cable.
9. On the outside of the housing, remove the two screws near the VGA input and remove the metal plate there.
10. Pop out the plastic support above the power cable input.
11. unscrew the seven (6) screws from the circuit board and one (1) screw for the ground cable.
12. Apply pressure from underneath the circuit board and squeeze the clips to remove the two (2) clips on the circuit board.
13. Remove circuit board.
Step 2: Locate and Test Transistor and Fuse
Here we need to locate and test the four (4) c5707 Transistors. Unfortunately due to how the transistors work, we will need to unsolder them and test them outside the circuit via multimeter.
1. Locate c5707 transistors
2. Unsolder the transistors and tests them using the multimeter
3. replace the necessary transistor. I bought an actual repair kit off of Ebay for like 5$ or something like that.
4. Locate and test fuse (replace if need be)
Step 3: Replace Hardware
Pretty much follow step 1 to reassemble your Monitor. Then hook up the monitor and pray that this worked. I'm now wizz on this stuff so if it didn't work I'm all out of ideas. Good Luck!
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