Re: Dell 3008wfp faulty power supply
I managed to disassemble my Dell 3008wfp. The power supply circuit looked in very good order with all nichicon (125 degree celcius) capacitors looking healthy. I'll need to invest in an ESR meter to check further.
For future reference these are the steps that I followed to disassemble this monitor:
1. Disconnected the monitor from mains and PC and relocate it to a very well lit area.
2. Using a credit card with one edge sharpened, part the top of the bezel from the black center plastic divider.
3. Using a plastic tire lever tool (ones for removing bicycle tires) wedge it into the gap made by the credit card and lever the tool so the black plastic center divider rises. Push down on the bezel and hopefully you have unlatched the clip. If you are seeing metal clips then you are removing the wrong clips. The clips are plastic and clip into the center black plastic divider (dividing back panel and the front bezel). Several tire levers help. Be careful around the bezel buttons as there is no slack for the ribbon cable.
4. With the bezel un-clipped rise the top of the bezel up by 90 degrees so the three very small screws holding the bezel button card can be removed. Remove the button card and from the bezel and put the bezel away.
5. Remove the monitor from the stand - 4 torque screws.
6. Place the monitor flat on a table with the screen up.
7. Un-clip the back panel with the center divider still attached from the metal body of the monitor. The tire levers or screw driver will do.
8. Turn the monitor over so you are now looking at the exposed metal body. Pull off all the metal tape that is in the way (pretty much all of it).
9. Disconnect the ribbon cable from the plug (pull out the brown ends by levering them outwards with a very small screw driver). Place the ribbon cable with buttons on the end in a safe place away from where you are working.
10. Remove the single screw holding down the card reader. Slide the card reader from the slots holding it place.
11. Go to the opposite side now and remove the two screws holding down the cover on this side. Lift the cover up and out of the way.
12. Disconnect the plug that is now in view.
13. Remove the three small screws holding down the top metal cover.
14. Slide the cover out and place it out of the way.
15. Remove all screws holding down the main electronics plate (6 of).
16. Remove the 2 screws securing the 3-pin power inlet connector.
17. Slide the main electrical plate towards the card reader and lift the top end up so it exposes two cables plugged into the back of the display.
18. Remove tape and unplug these two connectors so that the main panel can now be lifted away and worked upon. The power supply board can now be removed once the 4 screws on the back of the metal panel and all screws holding the power supply PCB in place are removed.
19. Good luck.
I managed to disassemble my Dell 3008wfp. The power supply circuit looked in very good order with all nichicon (125 degree celcius) capacitors looking healthy. I'll need to invest in an ESR meter to check further.
For future reference these are the steps that I followed to disassemble this monitor:
1. Disconnected the monitor from mains and PC and relocate it to a very well lit area.
2. Using a credit card with one edge sharpened, part the top of the bezel from the black center plastic divider.
3. Using a plastic tire lever tool (ones for removing bicycle tires) wedge it into the gap made by the credit card and lever the tool so the black plastic center divider rises. Push down on the bezel and hopefully you have unlatched the clip. If you are seeing metal clips then you are removing the wrong clips. The clips are plastic and clip into the center black plastic divider (dividing back panel and the front bezel). Several tire levers help. Be careful around the bezel buttons as there is no slack for the ribbon cable.
4. With the bezel un-clipped rise the top of the bezel up by 90 degrees so the three very small screws holding the bezel button card can be removed. Remove the button card and from the bezel and put the bezel away.
5. Remove the monitor from the stand - 4 torque screws.
6. Place the monitor flat on a table with the screen up.
7. Un-clip the back panel with the center divider still attached from the metal body of the monitor. The tire levers or screw driver will do.
8. Turn the monitor over so you are now looking at the exposed metal body. Pull off all the metal tape that is in the way (pretty much all of it).
9. Disconnect the ribbon cable from the plug (pull out the brown ends by levering them outwards with a very small screw driver). Place the ribbon cable with buttons on the end in a safe place away from where you are working.
10. Remove the single screw holding down the card reader. Slide the card reader from the slots holding it place.
11. Go to the opposite side now and remove the two screws holding down the cover on this side. Lift the cover up and out of the way.
12. Disconnect the plug that is now in view.
13. Remove the three small screws holding down the top metal cover.
14. Slide the cover out and place it out of the way.
15. Remove all screws holding down the main electronics plate (6 of).
16. Remove the 2 screws securing the 3-pin power inlet connector.
17. Slide the main electrical plate towards the card reader and lift the top end up so it exposes two cables plugged into the back of the display.
18. Remove tape and unplug these two connectors so that the main panel can now be lifted away and worked upon. The power supply board can now be removed once the 4 screws on the back of the metal panel and all screws holding the power supply PCB in place are removed.
19. Good luck.
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