Question about Akai LCT2721AD 27 in. LCD Television

4 Answers

AKAI LCD TV - power light stays red, won't turn green

Problem gets worse over a year or more, until the TV won't power on at all

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  • ketch1 Feb 12, 2009


    I posted the common problem in order to answer it.....

    An older lady gave me FREE her 1 yr-old AKAI after enough frustration... She bought a new SONY.
    With my online research, I have found that there are MANY of these AKAI LCD TV's with the same power/green/red light problems, getting worse over time and finally won't power on at all (Phillips TV's too) ....
    I'm the furthest thing from an electronics expert, but I did the job slowly and carefully.  Assuming you have basic skills, soldering tools, confidence, concept of safety, I'd say you can too, IF your problem is identical to mine (failed capacitor or capacitors on the power supply circuit board).


    Here's my method (first time took me a maybe two hours; I could do the repair again in under 30 min.)
    Put down a very clean shaken towel and put the TV face down on a flat table or work area, so that the face stays protected.
    Remove the back slowly, paying attention and keeping the screws organized.
    On my set (AKAI LCT2721AD) the lower back portion (covering the speakers) needs to come off first, since it covers one of the screws holding the main back assembly.  
    One back screw will probably be under a safety/warranty warning sticker. Punch thru it, if you dare.
    For the built-in DVD player, remove the outermost two screws only (end cap), hinge it down and very gently pop the three tabs holding it in place.   This assembly stays with the TV.  You'll need to feed it thru the plastic opening as you remove the main back assembly.

    Next remove the power cable attachment (gently pinch and lift the connector) and unscrew the "ground" -small bolt on one of four corners of the power supply circuit board.  Note the circuit board is held by two bolts and two screws -- remember this.
    I decided not pull the circuit board connectors apart.  Turn the circuit board over, and get a good look at the capacitors (three 1000uf 16v in a row between the two heat sinks) ... they are likely visibly buldging, and needing replacement.  Look at ALL the capacitors for a bulging top popping up.
    Replace with higher temp. 105°c (I believe you won't find at Radio Shack) ... replace the 16v caps with 25v.
    Make note that there is a polarity to these capacitors - a negative side with a stripe on it. 

    Order capacitors online or go buy retail (could be wasted time and gas) .. decide if you prefer suction or braid wick to remove solder, and get your supplies together.
    Go to youtube.com and watch videos! ... search: "solder" and "soldering" ... especially "How and WHY to solder correctly" <-- very helpful video.
    Practice your soldering with any circuit boards from the trash or recycling.. there's millions of items around-- I took apart an old dig clock.  Practice removing solder and components and resoldering with clean good results.

    I used digikey.com to buy three electrolytic capacitors 1000uf, 25v, 105°c (the ones I replaced were 1000uf, 16v, 85°c) ... plus wick .. my grand total shipped to me in a couple days (regular first class mail) $7.52 !

    Good luck .. I hope your results are like mine!



  • WOT12 Mar 09, 2009

    My TV worked for about 5 months, then gradually would not respond properly to a 'power-on'.

  • CloneBoy Apr 12, 2009

    Thank you so much, Ketch1! A friend gave me her "dead" Aiwa LCT2721AD(not
    Akai) and it had the same history. After about a year, ittook longer
    and longer to turn on, and finally it wouldn't turn on atall. I was
    guessing power supply and/or capacitors from thosesymptoms, and, with
    courage bolstered by your experience, I opened itup and replaced 4 caps
    that had mushroomed and vented. Theneverything worked fine!!! Thanks
    for pointing out the hiddenscrews. I noticed the TV and especially the
    power supply puts outa lot of heat. To try to prevent a recurrance, I
    screwed a 0.08amp 12 VDC box fan to the back of the TV to provide some
    extraventilation. That low power fan is completely silent.
    Thanks again - now I have a nice new TV!
    Andy

  • ketch1 Apr 25, 2009

    You're welcome, CloneBoy ... It's cool to save hundreds, develop a new skill, and get a nice working tv out of the deal...  so many people toss tv's out of frustration... i'm casually browsing craiglists ads for such tv's which i could now probably fix.


    i've been warned by a wise friend/tech to be extremely careful with other capacitors! ... like the high-power beefy caps in musical instrument amplifiers ... some of these caps are big, like the size of a redbull can ... they can retain a charge and knock you on your *** if touched incorrectly or not discharged properly first.. i think i won't be messing with those!


    good idea with the mini fan!  i might do that.  any particular model or online source for ordering?

  • Tom Fillmore
    Tom Fillmore May 21, 2009

    Fixya ketch1 !

    That was the problem. I replaced 3 1000uF 25v capacitors and the tv worked like it should. Thanks for the solution to your own post!

  • Travis May 24, 2012

    Years later this post saved me hundreds on my Akai TV. Followed directions exactly and TV is back up and running!

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  • Master
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Hiii.....
If the power supply is supplying the main board with the correct amount of volts, your controller board or your on off switch panel is malfunctioning and needs to be replaced. If its the whole board your looking at a few hundred unless you can find the same tv with a broken screen and just swap parts.The on/off switch board is cheaper but you have to remove alot of interior parts to access and becomes a hastle.
thank u rate me!!!

Posted on Feb 12, 2009

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Just wanted to write a note to Ketch1 and the rest on this thread to confirm that this is an excellent solution to the problem. I followed Ketch1's advice and it worked perfectly. In my case, I opened the Akai flat screen and found the 3 capacitors and they were slightly bulged on top. Using a soldering iron, I removed enough solder to pull them out of the board. Interestingly, the 3 capacitors were 105 degree, 16V, 1000uF...not the 85 degree mentioned...I ordered 3 new 105 degree, 1000 uF, 24V capacitors from digikey. One thing that isn't mentioned here is that the 24V capacitors are larger than the 16V and don't fit quite as well on the board. However, even though they are touching and at a slightly odd angle (not straight up), they still work great. Hoping that this will last a while! Thanks again!

Posted on Dec 31, 2010

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Ketch1 !! my hero. i registered here just to thank you! profusely! My set is a Westinghouse, but these different makes are more similar than different, with the same design flaw: underestimating the heat which makes capacitors fail. I checked out the youtube solder videos and practiced, but looking at my completed solder job, everyone would laugh! I ****! But you know what, the connections are soldered solidly (yet sloppy) and now it's all reassembled and working perfectly!! Truth is, most of us are just normal dorks evaluating whether we are skilled enough to tackle do-it-yourself repairs without screwing it up! This was a big success story, thanks to the Internet, and cool cats who help others! Now, ketch1, about my GE washer.... haha

Posted on Mar 26, 2010

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The solution above by ketch1 was 100% spot-on. Thank goodness there are people out there who are kind enough to share this information. 95% of the people in the world would have taken that Akai TV and tossed it to the curb. Thanks for saving me a ton of money, and helping me to better understand just how simple it is to make basic electronics repairs.

Posted on Feb 28, 2010

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