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chris hansen Posted on May 25, 2007
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Chassis kp2771uy, wont power up

I am sure konka made this misakai 32 inch tv. I could send you schematics there not helping me. Tv wont power up. Relay is not picking up. I have 170 volts at bridge cant figure out what turns on the relay, half the components shown on the print are not on the board. I have basic electronics and weak blue print reading skills but I am determined to fix it. Any advice.

  • Anonymous Jan 14, 2008

    I have the same problem with my Misakai Model mTV3201 32" TV.Manufacture date August 2005

  • ibswilly Jan 19, 2009

    I have similar problem for my Konko K3288U and cannot find a schematic. If you can email me a copy I would appreciate it, if not can you tell me where I need to go to find one? [email protected]

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1 Answer

Simpson Neal

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  • Expert 236 Answers
  • Posted on Jun 02, 2007
Simpson Neal
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Joined: Jan 12, 2007
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If you have a switching power supply then you may have a problem with it. Also maybe a short on its load. The relay may be used only to de-magnetize the pic tube. If the set is also controlled by a micro processor then the stand -by voltage could be missing. There are so many possibilities that it's difficult to tell exactly what is happening. These are only a few things that may be wrong. Stargazer

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No it won't be a software issue. If it worked before, it should work the next day without needing software. It has failed and needs repairing.

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It's really not quite enough to go on and could be any of the following; Bad FBT (flyback transformer), R216 in the ABL circuit. (Auto blanking limiter); D404 in the Hv circuit or the HOT (horizontal output transistor) at Q404... I'd start there first and if those test okay then I will dig out the schematics and send you the service manual.
Do you get any relay click when you press power button? That's a TAC0116 chassis and prone to any or all of the above.
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William Rayburn, CET
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PO Box 442
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360-642-4993
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