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Introduzione

If your AL2216W is having problems, it is likely a capacitor fault. Here are some signs of bad capacitors:

Note: While some issues may be corrected with a partial repair, this is NOT RECOMMENDED. One bad capacitor usually means the rest will fail!

  • Power issues (Present issue)
  • Excessive transformer/inverter hum (Present issue)
  • Backlight problems
  • Auto adjust problems (VGA) (Present issue)
  • Random power issues that only resolve if the monitor is unplugged
  • Video issues (Ex: Unstable image, video instability)

Original capacitor values (Delta 00A power supply)

NOTE: Most referenced values are obsolete, or PSU specific - validate which ones you need before purchasing parts. AS THIS GUIDE (AND MONITOR) HAS AGED, MANY OF THE ORIGINAL CAPACITORS BECAME OBSOLETE AND WILL NEED TO BE UPGRADED GRADUALLY, AS OLD VALUES BECOME HARD TO FIND. This will not impact the monitor electrically, as long as the upgraded part is balanced (Example: 25V capacitor is obsolete, but a 35V part with the same uF rating is available or voltage matches, but replacement is 100uF better) and all of them are replaced at the same time. NOTE: I have not tried partial replacements with upgrades, so I do not know keeping the originals and upgraded capacitors will work. It's always best practice to avoid this anyway as the rest will fail and will likely need to be upgraded too.
While I have done my best throughout this guide's life to counter this problem with nearly identical shelf stable substitutes if the original is “obsolete in practice”, these will also become obsolete and will need to be further upgraded.

  • 25V 1000uF (x2)
  • 10V 1000uF (x1)
  • 25V 220uF (x2)
  • 16V 2200uF (x1)
    • Inverter coil capacitor. This will not be present on most power supplies as it was removed in newer revisions.
  1. Acer AL2216W Capacitor Replacement, Discharge the old capacitors: passo 1, immagine 1 di 1
    • CAUTION: If you are uncertain about handing high voltage parts, follow all provided warnings! A capacitor discharge tool is STRONGLY RECOMMENDED.

    • The filter capacitor will hold the most residual charge. Use caution around this capacitor!

    • Unplug the monitor for 24-48 hours. Wait 5-7 days before swapping the filter capacitor.

  2. Acer AL2216W Capacitor Replacement, Remove the stand: passo 2, immagine 1 di 2 Acer AL2216W Capacitor Replacement, Remove the stand: passo 2, immagine 2 di 2
    • This monitor never came with a hinge cap. If yours has one, unclup the marks in black.

    • Remove the 4 screws from the monitor stand with a Philips #1 screwdriver. Remove the bottom screws first.

  3. Acer AL2216W Capacitor Replacement, Remove the back of the monitor: passo 3, immagine 1 di 2 Acer AL2216W Capacitor Replacement, Remove the back of the monitor: passo 3, immagine 2 di 2
    • Sort this screw separately, as it is unique.

    • Remove 4 fine threaded screws from the back of the monitor with a Phillips #0 screwdriver. All of these screws are the same.

  4. Acer AL2216W Capacitor Replacement, Unlatch the clips (Bottom): passo 4, immagine 1 di 2 Acer AL2216W Capacitor Replacement, Unlatch the clips (Bottom): passo 4, immagine 2 di 2
    • If the monitor has never been serviced, a flathead screwdriver may help at the expensive of damaging the plastic.

    • On the bottom of the monitor, there are four slots to open the monitor. To release these clips, use a Jimmy or flathead screwdriver.

  5. Acer AL2216W Capacitor Replacement, Unlatch the clips (Side): passo 5, immagine 1 di 1
    • If you are having trouble doing this, use a pry tool. An unserviced monitor may not come up as easily.

    • With the monitor unclipped on the bottom, pull the sides of the monitor up. Do this slowly to avoid cracking the LCD.

  6. Acer AL2216W Capacitor Replacement, Remove the IEC socket screws: passo 6, immagine 1 di 1
    • After these screws are removed, the power supply will be exposed.

    • With the back of the monitor off, remove the 2 screws on the IEC power connector using a Phillips #0 screwdriver.

  7. Acer AL2216W Capacitor Replacement, Remove the video connection screws: passo 7, immagine 1 di 1
    • If you do not have a nut driver on hand, needlenoose plyers can be used.

    • Remove the 4 screw pins for the video cables from the monitor. Use a 5mm Nut bit/driver to remove the screw pins from the power supply shield.

  8. Acer AL2216W Capacitor Replacement, Disconnect the backlight cables: passo 8, immagine 1 di 2 Acer AL2216W Capacitor Replacement, Disconnect the backlight cables: passo 8, immagine 2 di 2
    • Disconnect the CCFL cables from the power supply board.

  9. Acer AL2216W Capacitor Replacement, Disconnect the button board: passo 9, immagine 1 di 2 Acer AL2216W Capacitor Replacement, Disconnect the button board: passo 9, immagine 2 di 2
    • Board removal is optional.

    • Disconnect the flat flex cable that goes to the control board.

  10. Acer AL2216W Capacitor Replacement, Remove the power supply shield (Part 1): passo 10, immagine 1 di 2 Acer AL2216W Capacitor Replacement, Remove the power supply shield (Part 1): passo 10, immagine 2 di 2
    • Remove the 2 lower screws that hold the power supply shield to the monitor with a Phillips #0 screwdriver.

  11. Acer AL2216W Capacitor Replacement, Remove the power supply shield (Part 2): passo 11, immagine 1 di 3 Acer AL2216W Capacitor Replacement, Remove the power supply shield (Part 2): passo 11, immagine 2 di 3 Acer AL2216W Capacitor Replacement, Remove the power supply shield (Part 2): passo 11, immagine 3 di 3
    • The lower shield does not have to be removed. However, it will make disassembly easier.

    • On the right side of the monitor, remove the remaining screws holding the shield in place.

    • Lift the lower plate up while removing the power supply shield to remove it from the monitor. Once this is done, you will have access to the power supply.

  12. Acer AL2216W Capacitor Replacement, Remove the power supply: passo 12, immagine 1 di 3 Acer AL2216W Capacitor Replacement, Remove the power supply: passo 12, immagine 2 di 3 Acer AL2216W Capacitor Replacement, Remove the power supply: passo 12, immagine 3 di 3
    • If you see bulged capacitors, assume there is residual charge. THE FILTER CAPACITOR MUST BE DISCHARGED! THE BLACK SCREW IS A GROUNDING SCREW AND MUST BE PLACED CORRECTLY.

    • This capacitor is only found on older power supplies. Replacement is advised, but not required.

    • With the power supply shield removed from the monitor, identify the power supply. Take note of the values, including the inverter cap (if present).

    • Remove the 4 screws from the power supply. Once this is done, lift up the power supply at a slight angle to clear the chassis. Do not lift too much or the connector may be damaged!

  13. Acer AL2216W Capacitor Replacement, (Optional) Capacitor polarity marking: passo 13, immagine 1 di 1
    • If the PCB is marked to avoid mis-installation, the flux will wash these marks off.

    • If you are unsure of the position of the capacitors, mark the polarity with a permanent marker. If the capacitors are incorrectly installed, they will explode when power is applied.

  14. Acer AL2216W Capacitor Replacement, Add flux to the capacitor leads: passo 14, immagine 1 di 1
    • If you do not have flux on hand, solder can be used. Some flux is difficult to clean if overused.

    • To prepare the board for capacitor replacement, add flux or solder.

  15. Acer AL2216W Capacitor Replacement, Remove the old capacitors: passo 15, immagine 1 di 3 Acer AL2216W Capacitor Replacement, Remove the old capacitors: passo 15, immagine 2 di 3 Acer AL2216W Capacitor Replacement, Remove the old capacitors: passo 15, immagine 3 di 3
    • Use of a Helping Hands is recommended to avoid soldering iron contact. If you do not have one, hold the board at an angle.

    • While a partial replacement may work, the remaining capacitors will fail. It is best to do them all while servicing the failed ones. Refer to this guide for a soldering "how to".

    • Move to a workspace with ventilation or use a fume extractor. Once in an appropriate workspace, desolder the old capacitors. Heat up each leg and remove it.

    • After removing the capacitors, clean up the old solder with a desoldering braid. Lift it with the iron when removing it.

  16. Acer AL2216W Capacitor Replacement, Installing brand new capacitors: passo 16, immagine 1 di 1
    • Check the capacitor polarity before soldering the new capacitors in. Incorrectly installed capacitors will explode with power applied!

    • Install the new capacitors. Check the polarity and bend the leads so they do not come loose during installation.

  17. Acer AL2216W Capacitor Replacement, Solder the new capacitors in: passo 17, immagine 1 di 3 Acer AL2216W Capacitor Replacement, Solder the new capacitors in: passo 17, immagine 2 di 3 Acer AL2216W Capacitor Replacement, Solder the new capacitors in: passo 17, immagine 3 di 3
    • Once the polarity is verified, solder the capacitors in. After installation, cut off any excess lead.

  18. Acer AL2216W Capacitor Replacement, Clean the flux off of the board: passo 18, immagine 1 di 1
    • After verifying there are no cold solder joints, clean the board. This can be cleaned with 91%+ Isopropyl or denatured alcohol.

  19. Acer AL2216W Capacitor Replacement, Test the monitor: passo 19, immagine 1 di 1
    • Put the monitor back together and test the repair.

Conclusione

To reassemble your device, follow these instructions in reverse order.

Altre 12 persone hanno completato questa guida.

Nick

Membro da: 10/11/2009

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28 Commenti

I did not replace the large capacitor on the Acer monitor yet. All other caps have been replaced. I may have to replace the FSPO55- ZP102A as it has a hot spot beside it. I don't know if the part number is right? Do know where I can buy it. Tom B

Thomas Brady - Replica

These older CCFL panels usually burn on the PCB by the inverter coil and main transformer (the Delta branded part, in this case). The LED monitors limit the failure points to the transformer.

It sounds like your PCB got burned from the heat by the transformer or the inverter coil. This is very common and the boards are designed to take it. However, if you are concerned you should buy a new power supply board altogether if that makes you more comfortable.

Nick -

In step 12, replacing the capacitors with ones with a different capacitance rating instead of using a capacitor rated for higher voltage makes no sense to me electrically. The capacitance rating is the important part, if you use a capacator rated for say 35 volts when the original is rated for 10 makes no difference whatsoever. the rating just means MAX voltage.

Brennan Gomolka - Replica

Thanks @nick! Just waiting for the parts to come in!

Aiden - Replica

@nick which one is the filter capacitor?

Aiden -

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