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Akai lct42z6tm my akai 42 inch flat screen has 4 scrambled squares (1 in each corner ofscreen) when i try to use a hdmi channel.If i cut the unit off and switch to a non hd channel all is fine.Funny thing is it worked fine for a while. I havea cox hdmi converter box with a phillips 12 foot cable going to tv. Should itry dvi/hdmi rather than hdmi/hdmi cable? Thanks

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  • yyyy Nov 27, 2007

    same thing scrambled squares in all 4 corner's display also scrambled and when i do get a picture in hd little white lines running across the screen. got to keep turning it on and off to get a picture

  • Anonymous Dec 03, 2007

    I have the same problem with my Akai LCT42Z6TM, but when the unit finally warms up (about 10 minutes), the HD Channels work great !!

  • Brucemitchel Aug 16, 2008

    Thank you, thank you, thank you! I tried the fix described here. I am no expert and the soldering was a bit tricky for me since my iron was just to big and my hands a bit shaky. But I am all done and the set works great. Many thanks to fellow who posted the picture i could not see those numbers for the life of me. I bought my set at Sam's from the "broke pile" for $400.00. Thought the problem was the cable at first, and screwed around to long to return the set to Sam's. I called and wrote Akai and received no response. I will not buy anything again that says Akai. My screen was completely gone before this repair. Just multicolored lines that would pop up after a minute of cycling through the power. I REALLY appreciate the help I received here.

  • Anonymous Aug 22, 2008

    same problem...set is 14 months old.

  • raytheonlisz Sep 17, 2008

    i have the same problem...but I replaced the 4 capacitors mentioned and it STILL doesn't work. I still get those four squares and the white lines. What else could be the problem?

  • maseratijim Sep 23, 2008

    I have the same problem. Bought it at SAMS in April 2007. Will try to get it fixed uner the Mastercard "double factory warranty" program. THanks for letting me know what the problem is.

  • lbvinson Oct 02, 2008

    I bought my Tv 2/2007 and switched tioDirect TV HD...my resolution are spotty on 720 and 1080...i thought it was the reciever, but now reading all of the comments here I'm thinking has changed. Direct TV tech said it was my TV,,,I am going to insist SAM club take this TV back and exchanged. I paid too much money for the TV not to give me HD clarity. I have been paying for HD as well. Sound like We have a lemon here. I had this problem from the onset...an all thi time thought I was getting bad service from receiver. my product is LCT42Z6TM

  • jackwol Jan 20, 2009

    I had the same problem described by other owners here. Just for the heck of it, I pulled the power cord out of the wall, leaving the set totally without power, for about a month. Plugged it back in, turned the set on last week and... problem solved, great picture. Don't know if this is a permanent fix (I'm not an engineer) but it might be worth a try before you plunge into repairs. When not in use, I keep the set unplugged.

  • maseratijim Mar 19, 2009

    I finally got SAM's club to take the 42" Akai TV back. They gave me full credit, so I bought a Vizio 47" 120Hz for less money than I paid for the Akai. You just need to find the right person at SAMS Club to solve the problem.

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I can confirm that replacing these 4 capacitors worked perfectly. I work in construction so i am not a technician or anything. I did not even have a solder iron. I have photos of the board if anyone would like to see them. Took me about a hour to replace the 4. I had to use (2)35volt & (2)50volt cause radio shack only had 2 of each and it works like a charm. This TV has been in storage for 6 months until i found this article on the problem. Cant say thanks enough!!!!!!!!!!
akai lct42z6tm - 5634031.jpg

Posted on Jul 14, 2008

  • dougstarting Jan 30, 2011

    $5 fix......WOW. Thanks. The power of the internet and some people that are willing to take the time to post stuff like this. My sister was throwing it out.......called a "repair" place and they told us that it was going to cost more than 70% of the value of the TV??? i e.....go by a new one.....It was easy as well. Just heat the back of the Capsitors and rock them out. lillte heat and the new ones go right back into to holes......we felt so good when it booted right up........

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Yes, I am a computer / electronics person and by brother's tv had the same problem, here is a complete description of the problem and the fix. Many thanks to all that have come before

Symptoms

1) While watching tv, there will be vertical grayish lines that move around a bit on the screen
2) While viewing a menu, the menu will be all hacked up as if the bits are all out of order
3) If you unplug all of the sources and then re-power the tv, unplug from wall, the tv will seem it is working fine. Menus will work until a video source (Component) is plugged into the tv.

Tacking the back off

WITH TWO PEOPLE Lay the TV on a table with a blanket, etc to protect the tv. Do not try and move the TV with the back off in general. You may flex the screen and damage it.

Remove all of the screws from the back including the one under the sticker near the left bottom. Remove the stand from the bottom. Lift the back up from the left to the right. Power is hooked to the right of the back. Remove the two screws to remove the power jack from the back.

Remove the back and place aside

Remove the RF cover from and the board will be underneath

Remove all of the screws from the board and from the RCA connectors from the outside bottom of the board.

Carefully remove all of the wires, taking time to remove the glue from the connectors. The glue should "Snap Off", take your time here. Remove the wires, noting where they all are. Take your time with the big connector on the left side.

You will see that all / some of the caps will have a discoloration on the bottom.

Replace and replace ALL of the caps on the upper left side of the board. It's OK to replace with a higher value Voltage, they must be the same uf value of equal or higher voltage. They must be electrolytic caps (+/-). Make sure the line up the - properly with replacing. Radio shack may not have all of the them, but other electronics supply place should. They are call fairly common.

If you have never done this before, find someone that has, or find another tutorial on how to do this. You will need a small soldering iron and solder ****** and very thin solder from Radio Shack.

Replace the board, we tested by putting the board back. Sliding the TV on a table so the top could be seen and then plugging a source in and verifying it worked before reassembly. You HAVE to have a component source plugged in or it will false positive the test. We found this out the hard way....

Replace the back and the screws. On the right side of the TV MAKE SURE that the AC power wires are NOT in the way the screws on the right hand side.

Replace the TV to the original position and test....

Reason for Problem.

Either they have a flaw in the design, but more probably they had a poor supplier of the Capacitors. I have seen this before and we will probably see it again. This really should be some sort of class action suit since they are all failing about 1.5 years of use.

Any question, please contact me....

orthober@msoe.edu

Jeff Orthober, Assistant Professor, Milwaukee School of Engineering.

Posted on Oct 11, 2008

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Replaced the capacitors at location numbers C280, C302, C320, C323 - 100UF 35 VOLTS .It's working like New. Thank you!!! My issue was Horizontal lines and the big four distorted squares.As soon as I power it up. It gradually gets better then worse. Not anymore!!!!

Posted on Aug 09, 2010

  • nick100951 Feb 01, 2011

    Very new at this, are the capacitors ac or dc? radio shack only has dc.
    thanks
    Nick

  • n3evg Jul 21, 2014

    They are DC electrolytic PC mount capacitors rated at 105 degrees C

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I had the same exact problem.I tried the 4 capacitor fix myself...I guess I am just not that handy. IT DIDNT WORK. So I brought it to a local tv repair shop and the guy fixed it....said it was the circuit board and that I damaged it doing what I did...so it IS the circuit board...so if you're hand with a soldering tool then go for it...but if you don't want to take a chance ...it only cost me $85

Posted on Jul 22, 2010

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Changed the capacitors C280, C302, C320, C323 - 100UF 35 VOLTS. Bought em at Radio Shack $5. Took about 2 hours cause I'm slow. Capacitors are in a group on the board with all the AV connections.

Works Great

Posted on Mar 31, 2008

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Tech support at akai says: "AKAI model LCT42Z6TM - If there is no image or a badly distorted image with horizontal static lines, usually with four boxes in all four corners of the screen, there is a possible fix for this. There are four capacitors on the main board that have been identified as the primary cause of this symptom. Replace the capacitors at location numbers C280, C302, C320, C323 - 100UF 35 VOLTS" - this works - [dxh]

Posted on Dec 27, 2007

  • n3evg Jul 21, 2014

    Of the 4 capacitors I removed, only one tested bad with high ESR. It is best to replace all 4 however.

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Thank you so much for everyone who posted info on this, for $6.50 and about an hour of work the tv went from a colorful mess to a HD tv again, thanks!

Posted on Dec 19, 2012

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I want to THANK you for posting the fix for the Akai TV. I bought the TV about 1 1/2 years ago and was lucky to buy extra warranty. when it went bad the tech guy came to my house and said the problem was with the image board and because he could not order a new one they were going to give another TV. I complained and they sent me a check for $ 1,100.00, price that I paid for the TV. I put the TV on the garage and was trying to buy a new image board I came across with your posting on the internet. I bought the capacitors and had my brother, who works with computer, come to my house today to install it. In less than 20 min the tv was WORKING again. Wow! Now is the same as having the tv for free once that the insurance refunded my money. Once again thank you for taking your time to post the repair detail and steps.

Posted on Feb 19, 2010

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I installed the 4 capacitors and now the TV has power but wont turn on. :(

Posted on Feb 09, 2010

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OMG Thank you for the capacitor fix. My Akai has been in storage for a year and I finally came across this capacitor fix. I went to Radio Shack and in 30 min I was back up and running. Thank you thank you thank you

Posted on Sep 05, 2009

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Thanks for the suggestions! I replaced the capcitors and now the TV woeks like a champ!

Posted on Nov 05, 2008

Yes, I am a computer / electronics person and by brother's tv had the same problem, here is a complete description of the problem and the fix. Many thanks to all that have come before

Symptoms

1) While watching tv, there will be vertical grayish lines that move around a bit on the screen
2) While viewing a menu, the menu will be all hacked up as if the bits are all out of order
3) If you unplug all of the sources and then re-power the tv, unplug from wall, the tv will seem it is working fine. Menus will work until a video source (Component) is plugged into the tv.

Tacking the back off

WITH TWO PEOPLE Lay the TV on a table with a blanket, etc to protect the tv. Do not try and move the TV with the back off in general. You may flex the screen and damage it.

Remove all of the screws from the back including the one under the sticker near the left bottom. Remove the stand from the bottom. Lift the back up from the left to the right. Power is hooked to the right of the back. Remove the two screws to remove the power jack from the back.

Remove the back and place aside

Remove the RF cover from and the board will be underneath

Remove all of the screws from the board and from the RCA connectors from the outside bottom of the board.

Carefully remove all of the wires, taking time to remove the glue from the connectors. The glue should "Snap Off", take your time here. Remove the wires, noting where they all are. Take your time with the big connector on the left side.

You will see that all / some of the caps will have a discoloration on the bottom.

Replace and replace ALL of the caps on the upper left side of the board. It's OK to replace with a higher value Voltage, they must be the same uf value of equal or higher voltage. They must be electrolytic caps (+/-). Make sure the line up the - properly with replacing. Radio shack may not have all of the them, but other electronics supply place should. They are call fairly common.

If you have never done this before, find someone that has, or find another tutorial on how to do this. You will need a small soldering iron and solder ****** and very thin solder from Radio Shack.

Replace the board, we tested by putting the board back. Sliding the TV on a table so the top could be seen and then plugging a source in and verifying it worked before reassembly. You HAVE to have a component source plugged in or it will false positive the test. We found this out the hard way....

Replace the back and the screws. On the right side of the TV MAKE SURE that the AC power wires are NOT in the way the screws on the right hand side.

Replace the TV to the original position and test....

Reason for Problem.

Either they have a flaw in the design, but more probably they had a poor supplier of the Capacitors. I have seen this before and we will probably see it again. This really should be some sort of class action suit since they are all failing about 1.5 years of use.

Any question, please contact me....

orthober@msoe.edu

Jeff Orthober, Assistant Professor, Milwaukee School of Engineering.

Posted on Oct 11, 2008

  • n3evg Jul 21, 2014

    Make sure you use 105 degree rated capacitors, the 85 C won't last as long.

×

I just did the same thing with a return i bought from SAMs Club for $398. It does work and the TV''s HDMI and Component inputs work absolutly fine. The 100 mf Capacitors are $1.59 each at Radio Shack and I was able to replace them in under an hour.

Thanks

Posted on Jul 27, 2008

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  • 11 Answers

Replace the capacitors at location numbers C280, C302, C320, C323 - 100UF 35 VOLTS.

This does work. My TV was scrap and then 59c and 1hr of work later it's like brand new again.

However I used 100UF 50V electrolytic capacitors. No difference, just a higher max voltage rating.

Posted on Mar 06, 2008

I have been trying for four months for Akai to fix this very problem. I live in the Cleveland area and they claim that they are trying to get a technician but can't find one yet. Give them 10 to 14 days and call again is the constant refrain. At what point do I just take it back to the store for a refund. I understand that it is an easy fix so don't want to do this if it can be avoided. I've been paying for HD and am getting a crapy picture for my money all because of a faulty TV. Needless to say, I will never buy an Akai product again.

Posted on Jan 21, 2008

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Dont feel too bad..i bought 3 of these LCT42Z6TM monitors. They all developed the same problem.(scrambled video) They started displaying garbage on the screen. My guess is a bad AV board. Contact AKAI. theres an 800 number that came with the setup instructions. they didnt jerk me around. they told me to take the unit back since it was less than 30 days old. they will come to your house and fix it if you like..dont let time slip by doing nothing..call AKAI ...rick

Posted on Nov 19, 2007

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You guys are awsome!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
it worked great like brand new ....
the funny thing is just pucked it for a barter (next to nothing) ,spent five bucks on capacitors and got a large LCD

again thank you

Posted on Mar 19, 2009

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