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Problem with Sanyo ST-21KX2 it shuts off automatically

Hi, I have a problem with my Sanyo TV. What happens is that it automatically shuts off after around an hour or more of use. I believe that if it is already hot it will automatically turn off on its on and when you turn it back on after 5 minutes or so it will turn off again. I tried to open the back cover of the TV, then tried to focus an electric fan at the circuit. It doesn't turn off. I tried to bring it to a repair center and they told me that the problem is the power supply but they are charging me a lot to fix this. Is there a way that I can fix it on my own?

Posted by cool_freeze on

  • Anonymous Mar 19, 2008

    sharp 21"tv

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Ernesto Albite

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I HAVE A PROBLEM WITH SANYO ST-21KX2. WHERE CAN I DOWNLOAD A DIAGRAM?

Posted on Nov 03, 2010

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vic_argomido

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Dear cool_freeze the problem of your Tv is just like mine,open the cover of your Tv,look at the power supply if you see the small Zener diode ,pls tester it at X1 at resistance,if it reads back to back then it is defect,get it and replace it according to its voltage!!!

Posted on May 01, 2013

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Starup

Posted on Apr 14, 2012

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Yes it could be the large ac caps in the powersupply. Or it could be a resistor. You would have to do a few checks, if you know how. there are a few large caps with a high voltage that maybe leaky.

Posted on Oct 08, 2007

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I have a 58 inch Sanyo flat screen TV, I turn it on everything works fine, shuts down in about 10 minutes! Sound stays on though. If I shut it off and turn it back on it does the same thing!


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SAMSUNG TV REPAIR- TURNS OFF RANDOMLY - YouTube

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EASY HOW TO FIX SAMSUNG TV- TURNS OFF RANDOMLY Clicking ... Hi, I've got a Samsung LED TV that switches off after20 seconds and remains off. .... after about couple of minutes, is this the same problem with the tv in the video? .... 10:32. How to repair a Samsung LCD TV with a flashing standby ...

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Dec 17, 2015 | Televison & Video

1 Answer

COULD someone help me..what is the value of the ceramic capacitor next to the horizontal output transistor it actually connected to the midle leg oF the HOT..my tv brand is sanyo st-21kx2 chassis,...


It might vary to 3500pF2000Vdc to 9500pF 2000Vdc. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
CTV circuit diagrams are given. you can refer it.

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Asking for schematic diagram for sanyo st-21kx2 chassis


If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

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sir may ginagawa akong tv ang trouble nya. pag on mo ng tv after mga 2 to 3 .minutes nawawala na ang sound tpos pag pinatay mo at pag plug mayron uli sounds tpos nawawala uli sound buo ang i.c sanyo st 21ys2

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My 46" sanyo lcd tv screen was all black on the right side and got to where it shut off now it wont even come on


Specifying the model - and in case of Sanyo TVs the chasis - is critical for faster and proper diagnostics of such problems.

Here are a few points of reference, neither of which covers nearly completely the very wide Sanyo TVs line:

http://blog.coppelltvrepair.com/2012/07/sanyo-dp47460-dp42840-dp46819-and.html

http://www.coppelltvrepair.com/productag/19/sanyo


Good luck!

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ST-14SEIK


What is the problem with your Sanyo TV?

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Sanyo dp46819 after 5 minutes tv starts changing channels by itself and volume shoots up ,will not shut off ,have to unplug to shut off,,what is problem?


Good day!


That problem is usually happens when the button is defective..

The push button is not get back to the original position it remains on contact so the channel is automatic tuning

Please replaced the button of channel to fix that problem.

Thank you and good luck

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That sounds like you have a power supply fault.
If the mains fuse has blown on the chassis, check the Switch Mode Chopper Transistor and dry joints around the transformers.
Be careful replacing the chassis in the case as the join gives problems!
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bro my probleme ako may b+ pero wlang tao tapos maliit lang hindi naman sira ang vertical IC

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I have lost my paperwork and forgot how to program my remote


Turn the device on that you want to program. Press and hold  Set for 2 seconds.  When the light is on, press the device button you want to set.  Then press the Channel + or - and press power after.  When the device turns off, press enter and your code is saved.  If all functions do not work after this, repeat the process until you get the right one.

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