Question about Zenith H27F36DT 27" TV

3 Answers

Burning smell Found capacitor in hv area burned and replaced. I have seen a lot of these in my shop and the result is the same....once the capacitor is replaced the set fires up but tyhere is always a phase problem with the picture and a tear. What else needs replacement? The Zenith Tv I'm working on is model B36A24Z and it also had the burning smell with the smoked capacitor in the horizontal circuit. In this tv the thermistor also bit the dust. I need a value and/ or part number for both of these components.

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  • Videomanic Mar 07, 2008

    The problem is that the ceramic disc capacitor does not have a value shown on it.
    There are two of these capacitors in that area and the schematic id's are CX3212 and CX3213. Could you give me a value on these with info?

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3 Answers

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  • Master
  • 818 Answers

You must contact a dealer, please go to this page
http://www.zenith.com/index.asp?url=./jump_dealers.asp
Sergio

Posted on Mar 06, 2008

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  • Master
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The capacitor is burnt becuase the temperature rating is not proper. If a 75°C Capacitor is used somewhere which requires it to withstand upto 95°C then it will be a toast. Examine the capacitor you will find something like
8000μF,
75V,
+90°C . Just get another with the same values.
As for the thermistor i would strongly advice you visit the link below. They have genuine replacement parts and you just need to specify the tv model and they will get you the parts. Also i would suspect the capacitor is a toast because of the thermistor. When the thermistor failed(or malfunctioned) there's nothing to control the temperature and the cap just burnt up. Just visit the link and ask for a replacement Thermistor.
http://www.sourceesb.com/Distributors/Zenith.asp

Posted on Mar 06, 2008

  • eagle338
    eagle338 Mar 06, 2008

    PS:Do not attempt to turn the set on without replacing the THermistor.

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  • Zenith Master
  • 8,617 Answers

Need the board locations of the parts your needing the info on. Such as cxxx or Rxxx stamped on the PC Board.

Posted on Mar 05, 2008

  • Sonny Berry
    Sonny Berry Mar 07, 2008



    the schematic doesnt list CX3213 it list cx3212 and CX3215 as ceramic caps. here is the specs and part numbers. check the board location if CX3215 isnt the correct one CX3212 Part # 022-08386-05 560PFD 10% 2000V ceramic



    CX3215 Part # 022-07786-10C 470PFD 10% 500V ceramic

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1 Answer

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Whenever you experience an unusual smell coming from anything electrical, always turn it off and/or disconnect it from any power source until you learn more about the problem. A fire can make make any problematic device seem suddenly unimportant.


10_24_2012_3_24_03_pm.jpg

An extremely common component in nearly any electronic device is a capacitor. The sizes vary from baby-tooth-sized to bowling-ball-sized found in the power box for most photography studios. The hissing sound is likely caused by one of these. The noisy capacitor may be going bad or another component or an electrical short may be causing it to get too much power. I've attached a video of what happens when capacitors get too much power.


An electrical short could also be causing both symptoms. If the smell is similar to burning organic matter, you likely have an insect (a crispy critter) that can be removed to remedy your problem. However, an electrical burn usually releases gases from burning rubber or plastic and has a distinctly different type of odor. If that's the smell and you are handy with a soldering iron, remove the cover to your monitor and look for signs of burning or overheating. Otherwise, the task should be left to an electronics shop for repair.

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It will run but it won't heat. It also makes a funny "humming" sound and smells like burning plastic.


Sorry to read about your problem, I hope this helps you out.
you may one of these issues.
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  2. Bad connections (particularly to magnetron filament).
  3. Open thermal protector or thermal fuse.
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Microwaves must be serviced by technicians due to the inherent dangers involved in repairing these appliances. Internal capacitors can retain a lethal electrical charge even though the unit is completely unplugged. A microwave radiation leakage test must be performed on the unit following any internal component repair.

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2 Answers

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You can read about capacitor ESR at this site:
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1 Answer

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