Question about Hyundai Q321 32 in. LCD Television

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No picture,buzzing, no hope?

I've owned this q321 for about 5 months and just now it gave out on me. I turned it off and it began to buzz (a screechy kind of buzz. The buzz stopped after about 3 seconds. Ever since this happened there has been no picture and that damn screeching buzz is sure to start every time i turn the damn thing on. My assumption is that maybe dust got into it and a circuit fried or something but i dont know. Is there perhaps anything I can do to fix this in order to avoid dealing with the hassle of the warranty?

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It sounds like a problem with flyback transformer ,horizontal output transistor,deflection Yoke shorted ;these things could of caused another problem with power supply transistors/ic's shorting out. A professional technician is required to diagnose this serious problem. Technician: Tim Rasch

Posted on May 23, 2007

  • john811c Feb 05, 2011

    LCD TVs have no flyback transformers the do have individual transformers for the back light tubes , they have no defection yokes as they are not cathode ray tubes CRT and do not need one horizontal output transistors, probably not the screen is controlled digitally so probably have a microprocessor to control that. The Key word here is LCD not CRT. a side note these TV's were notorious for bad power supply boards due to defective Electrolytic capacitors installed on them. the simple fix would be to look at those and replace them all in the power supply board as well as on the HV backlight board. Or if your not comfortable with a soldering iron replace the power supply board first.


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I have the same TV. The screen went dead. Turned on the tv and waited for a few minuites for the picture to come on, the light went out. the tv is dead. I am dealing with Hyundai to have it repaired. You have to file a claim on the web site. They contacted me and I had to send them a picture of the Tv. I am waiting for there reply. I had the same problem with a TV i bought my mother. It is a Hisense. I am dealing with them, long time getting back to me. Both tv's sound like they have the same problems, power supply.

Posted on Feb 13, 2007


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