Question about Zenith B36A24Z 36" TV

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COMPLETELY DEAD NO SOUND NO PICTURE I also noticed a part was loose - looks like a silver nickel (round) with two wires soldered to it. I believe this part is THX3415 and has the following numbers stamped on the disc: 63-11119 778909

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  • crownline Feb 13, 2008

    Thanks for the help.



    Now, any ideas on why the set is completely dead?

  • elliswittman Sep 26, 2008

    same problem and found the thermistor unhooked and soldered it back on but it still has HV shutdown. Any help would be appreciated I have checked the common capacitors C3210 and 3211 and found them to be OK. Any help is great.



    Ed

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Hey !!! I solved my own problem. After I soldered up the thermistor I still had the same problem so I checked all the known parts around the startup circuit including the power supply relay and relay driver. All found to be good so I then attached a scope and signal generator and applied a horiz signal to the base of the Horiz output...voila!! I got high voltage so I tracked the horiz siganl thru the circuit and found a coil to be bad along with 2 electroletic Capacitors. The Zenith part number for the coil is 20-4073-01 and its part # on the board is LX3262. The caps are 4.7 Mfd @ 50 VDC located at CX3261 and 10 Mfd @ 350 VDC located at CX3205. I hope this will help someone else.

Ed

Posted on Sep 27, 2008

That would have to be looked at and trouble shooted on the bench by a professional. So many things could cause that symptom.

C-Dog

Posted on Feb 13, 2008

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That's called a thermistor. It's used in the degaussing circuit of the TV. If it's loose from under the board then it won't hurt to resolder it back on.

C-Dog

Posted on Feb 13, 2008

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