Question about Zenith R40W46 40" Rear Projection HDTV-Ready Television

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Loud electrical sounds

Same issue as previous poster... I was watching tv then all of a sudden, a sound simalar to something being "electricuted" and the tv screen went blank. Now when I press the power button, all u hear is a rapid clicking sound in the back and the tv wont turn on. My TV is 2 years and 6 months old. Please advise as to what can be done to fix this.

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Bill Heronemus

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  • 308 Answers

It sounds like the Power transistor that drives the High Voltage Transformer shorted out. The rapid clicking sound you are hearing when pressing the power button now is that of the power supply starting to come up, detecting a short circuit and shutting back off again, preventing further damage. It is likely that the HV Transformer is shorted as well which usually causes the Output transistor to fail. Since the set is only 2 1/2 years old, it is probably worthwhile getting it to a repair shop as long as you have been very satisfied with the picture quality up to this point. If the picture size was larger than you needed, you might consider going down to a 37" LCD HDTV set. Toshiba is tops in this category IMHO.

Posted on Apr 12, 2007

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1 Answer

Undefined
see a tech,sounds like your tv is in need of repair if its under warranty send it back,if not be prepared to spend some cash.sounds to me your transformer and/or the capacitors have failed,its a common problem for these units, easy fix if you have some electrical experience. but once theses tv's reach this point its time to see a tech or get a new tv.

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Watching TV and all of a sudden a loud pop came from the back of the set. Doesn't turn back on after unplugging.
Hello
Check its power supply regulator board. The pop sound you heard may be due to an explosion to any electrolytic capcitors on it. If the line voltage exceeds, this fault will happen. just repalce the damaged component. It is best to replace this board as card basis.

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1 Answer

No Picutre
someone shot your tv.





no really, I am just a smart a$$ --- but the loud pop sounds like it may have been one of the capacitors in the power supply board. check for a POPPED cap (rare) and if there is one, test the components in the related circuit - as SOMETHING had to happen to make a cap fail like that - maybe a voltage regulator? give it a look..

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Posterized!
Try 2 different signal sources, such as cable and DVD or Dish and DVD or Cable and vcr. If the same problem exists on both sources then the TV needs a circuit board.
I would like a discription of "posterized" to help you more.
Steve

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I am having the same exact issues wih the same TV and mine is only 2 years and 6 months old. Please let us know what is going on. Thank you.

Mar 07, 2007 | Zenith R40W46 40" Rear Projection...

2 Answers

While watching tv, the tv all sudden goes snowy, no sound, and have to turn it off and back on to make it work again
Connect up another set right next to that set thats going out to make sure the cable or that line is not bad. It soukds as though you may have an intermittant tuner assembly inside the TV set. Its also a possablity that there could be a bad solder connectiuon in or around the tuner assembley. Not really a job for the user, as this set has hot and cold chassis, and can give a mean shock if you do not have the know how to work on these monsters. good Luck PS Please do not forget to rate this thread.

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R40W46 40" Rear Projection HDTV-Ready Television

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I am having to same problem with the tv turning off after a few seconds. Do I understand that replacing the picture tube is the only solution.

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