Question about Insignia IS-LCDTV32 32 in. Television

3 Answers

Is-lcdtv26 26" TV

Dear Sirs: I have an Insignia TV IS-LCDTV26, I have own it for approx. 1 3/4 year. Last week it just quit working, no funny smell, no power outage, it just did not want to turn on again.
Signs and symptoms: While plugged in the outlet, the usual red LED in the front stays on, if you attemp to turn it on the blue LED comes on for approx one second and then all lights turn off, the screen never goes on and then the red LED comes back on. After this cycle the blue LED never comes back when pressing the power buttom, however if you disconnet it for about 1 minute it will go back to this same thing.
I have tried everything at Best Buys, they will order me a part, however I am not sure if this is a power supply problem or anything else. I know it is hard to diagnose this problem, I am just hoping you guys had this question in the past.
BTW, the technical team at best buy is very rude!!
Thank you again.

Posted by on

  • Al Mendoza Apr 27, 2008

    Dear IrishDruid: I recieved your instructions and went with the solution of looking for a busted capacitor in the power board. To my surprised I found them and it was easely obvious the caps were gone due to the swelling that you mentioned. They were in fact 2 caps, 680 1000microf, 35v volts. I went to Radio Shack and purchase them, only one thing went wrong and it was the polarity of the caps, I placed them wrong, however It was easely fixed, the TV now works perfect as it was new.

    The caps were in the power board at c939 and c940.

    I thank you much for your expertise and my family also very happy, I also wanted to extend my thanx to all of you that help in this website.

    Sincerely

    Fonze.

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  • 934 Answers

Fonze,
As IrishDruid said there are three 680uf/35v caps at E919,E920,E921 in the top left of the smps that commonly fail and 16 caps all together in the smps that are likely failures. Best, if you have an ESR meter, go through and test them and replace as necessary.
We just did two of these dawgs this week in the shop for exactly the symptoms you're describing and replacing caps in the PS cured them both...
Good Luck!
Bill

Posted on Apr 26, 2008

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Hello Fonze,

This is most likely due to 2 problems -Temperature or a bust capacitor,

1. There is a simple trick...just warm the back of the TV with a hair dryer for 5-7 mins after you have unplugged the TV. Look for the little areas of holes in the back panel of TV. Use these as your guide at where to use hairdryer., but don't hold the dryer too close(say 5-6inches away). (Make sure the dryer is on High heat). If the TV doesn't turn on after you have heated it up (like it tries to come on but then turns off) you need to unplug the TV again, this resets it. And repeat those steps till it works. Reseting the TV after it fails to turn on is the key. Also, just leave the TV on. Don't turn in off. Since it is LCD, it doesn't take much power...only a few bucks extra a month for your utility bill.

2. You can also try this..if you unplug the TV, and hold in the power button while plugging it back in, this will reset the TV, and sometimes it comes on.

3. If you want to go in for a long term solution, you can easily replace the whole power board (should be about $20 or so), or just change the faulty capacitors. You can make out which are faulty, because their caps will be swollen on top. Here's a pic
is-lcdtv26 26
Check the specifications of the faulty capacitors, and get the replacements from your local electronics shop. If you are comfortable with this, you can use a pair of needle nose pliers to G-E-N-T-L-Y pull out the defunct capacitors. Once that is done, solder in the new capacitors carefully. If are unsure how to do this, try to get a friend who knows how to do this kinda stuff do it for you.

Hope that helps...Should you have any further questions, please feel free to post them here.

P.S. Before you assign a rating, please make sure that the issue is resolved or you are satisfied. If not, please post back as to what you did, and/or any other questions you may have, and I will try to assist you as best I can. Please do not assign an ‘Inappropriate’ or ‘Thanks for trying’ rating if your issue is not resolved after the first response itself, as sometimes a bit of to and fro dialogue may be necessary before we can find a fix or an answer to your query.

If you find that the solution/answer I provided led you to, or resulted in a fix, please close the ticket with a FixYa! rating. I would be very grateful for your show of appreciation.

Thank you for using FIXYA!

Cheers!
IrishDruid

Posted on Apr 25, 2008

  • 1 more comment 
  • Swilin Sampson
    Swilin Sampson Apr 25, 2008

    PS. The capacitors are usually 680 - 1000 micro farad and 35V. however, if you dont find 35V, you could use a 50V as well. They will be slightly larger, but you should be able to get them to fit in.



    Cheers!


    IrishDruid

  • Swilin Sampson
    Swilin Sampson Apr 26, 2008

    You can buy the capacitors online from HERE or HERE if you wish..They cost $0.068 each.

  • Swilin Sampson
    Swilin Sampson Apr 27, 2008

    Glad to be of service, Fonze. Happy everything worked out well,

    Cheers!
    IrishDruid


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Yes, Best Buy isn't the best or the brightest, but they are probably right in this diagnosis. It seems as though a breaker is in need of replacement.

Posted on Apr 25, 2008

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