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Capacitors – Fixing an LCD computer monitor


Some tips on why your LCD monitor or literally almost ANY electronic device might not be working. Often times, the culprit is dead capacitors.

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This entry was posted on Tuesday, August 31st, 2010 at 8:20 pm and is filed under Power Supply. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

  1. #1 written by TooYoungToGamble August 31st, 2010 at 20:22

    Sweet video thank you :)

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  2. #2 written by vcamnowaa August 31st, 2010 at 21:18

    @poikaa3 Oh so thats what that stuff is My 22inch LCD Monitor has that stuff on one giant capacitor!

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  3. #3 written by poikaa3 August 31st, 2010 at 21:22

    @vcamnowaa Glue, to hold the cap in place

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  4. #4 written by vcamnowaa August 31st, 2010 at 21:40

    What’s that white stuff on one of the capacitors?

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  5. #5 written by MarantzSt153 August 31st, 2010 at 21:58

    I have an acer monitor goes on but after 10 secs backlight turns off No blown capacitors or leaking stuff Whats the problem?!

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  6. #6 written by alecjahn August 31st, 2010 at 22:44

    @daxweb Sorry.

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  7. #7 written by daxweb August 31st, 2010 at 23:13

    too long video

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  8. #8 written by rbeoulve August 31st, 2010 at 23:38

    @alecjahn well dont be afraid. coz wer all gonna die !! everybody panic!

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  9. #9 written by JuniperSprouts August 31st, 2010 at 23:44

    @rbeoulve Fuque China in the mouth.
    .
    Alec, great video. This makes my confidence +2.
    .
    Sorry you missed out on the synthesizer. You on gearslutz?

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  10. #10 written by renotuff September 1st, 2010 at 00:27

    @fukouzero, ty for the help,

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  11. #11 written by fulouzero September 1st, 2010 at 01:00

    @renotuff
    From what I understand as long as you don’t break the backlight opening it up (difficult to do), you won’t be exposed to mercury.

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  12. #12 written by capman911 September 1st, 2010 at 01:28

    You can pick up all of the capacitors in one place at lcdalternatives(dot)auctivacommerce(dot)com// . They have them for about all of the lcd monitors.

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  13. #13 written by renotuff September 1st, 2010 at 01:48

    tell me something, when they sya they have mercury in the computer screen, is it unsafe to take apart to repair?

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  14. #14 written by BlaccChoppa September 1st, 2010 at 02:29

    @alecjahn i watched all 10mins iono what dude talking about. he must didnt need help that i needed got all the info i need

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  15. #15 written by xxBalialxx September 1st, 2010 at 02:37

    @alecjahn Don’t listen to this dink, I’ve seen way worse. Great vid! :)

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  16. #16 written by schnappy00 September 1st, 2010 at 02:46

    @NobbyKNobbs Just about any electronics shop. Don’t know where you live so I can’t name any places… in Australia the quickest (But probably most expensive) route is a retail store like DSE or Jaycar.

    Worst case scenario, ebay.

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  17. #17 written by doginstine September 1st, 2010 at 03:28

    @NobbyKNobbs

    I bought mine from Radio Shack. Mine was for a RCA 46 inch Flat screen. just replaced all four, only three were bad, but it works great again.

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  18. #18 written by NobbyKNobbs September 1st, 2010 at 04:01

    This is a stupid question but where can I buy capacitors? thanks

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  19. #19 written by blade004 September 1st, 2010 at 04:32

    I recently pulled apart my monitor after it went dead and i was completely disorganized in doing so, now i have shit everywhere! .. A bit of patience i should have it altogether ;)

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  20. #20 written by JohnnyX50 September 1st, 2010 at 04:32

    Had the same problem with my PC Motherboard about 2 years ago. Random crashes, and my fans stopped. The problem was my previous power supply. The 12V went faulty and popped a cap (Black can) on my MB. Replaced the cap with a higher temp (purple can), same value/voltage from a spare power supply I had. Replaced power supply with a better make/higher power type. Havent had a problem since!! Thanks for uploading. Very nice find for the price! Jammy bugger !!

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  21. #21 written by 360kal September 1st, 2010 at 04:47

    @dingo27mobile am not so sure because the monitor is going on and off repeatedly until i disconnect it from my laptop or tower.
    so my theory is that because the capacitors are leaking the monitor can only handle its own power. when there is power from an input the laptop that is it starts bleanking.

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  22. #22 written by dingo27mobile September 1st, 2010 at 04:50

    @360kal Are you sure that its not just glue that holds them in place?

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  23. #23 written by Torq64 September 1st, 2010 at 05:12

    Very Cool Video Thanks I`m learning :)

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  24. #24 written by 360kal September 1st, 2010 at 05:41

    @dingo27mobile i have opened the casing and the capacitors have some sticky stuff coming out of them and they are also bulged up so am guessing thats the problem

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  25. #25 written by rhblakeman September 1st, 2010 at 05:50

    @alecjahn The stuff that is swelling and leaking is a result of China making ou electronics now. No preservative in the dielectric causes failure at about 1-3 yrs. Hard to tell origin of the caps though you have to just get what you can and cross your fingers. Radio Shack is ridiculous on pricing – about $1.29 each for a 470uF 35V radial – if they have any in stock since the 1000uF and 470uF ones are seemingly the worst to fail. RS only sells 35V caps.

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