Question about Zenith A56M91W 56" Rear Projection Television

1 Answer

Sound No Picture

This tv has good sound but no picture and does not appear to have any high voltage. qx3402 seems to get very hot. any ideas

Posted by on

Ad

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

  • Contributor
  • 29 Answers

The FBT (high voltage transformer) is bad.

Posted on Sep 08, 2007

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Why do we have sound but no picture?


This is an older picture-tube projection TV.
There are just a few things that can affect all three color tubes at the same time. One of these is "Blanking" and the other is the High Voltage.

Blanking happens when there is not a good signal to the TV, and the high voltage and therefore picture are shut off to protect the high voltage system. Make sure there is a good, strong signal to test it from, like a DVD player, otherwise the TV could blank off from low signal levels. A signal good enough to produce sound may not be good enough to keep the picture on, so that is not a good indication of good signal.

The other, High Voltage, is complicated and dangerous to work on and best left to a qualified technician to work on. High voltage in a TV can hurt or even kill you if you get across it.

Jul 06, 2014 | Mitsubishi WS-55313 55" Rear Projection...

2 Answers

Hi , was watching my 42 inch VIORE Plasma TV last night, when I heard a click noise and the picture went immediately but the sound remained fine, I could switch channels but no picture, would you have any...


Check high voltage circuit. This is near where the 120 volt cord is plugged in and a high voltage transformer, where there should be capacitor (or two). Check the voltage - should be 390 to 400 volts. If not less than 390, near to replace the capacitor.

Dec 22, 2017 | Toymax Viore 42 in. Plasma TV

1 Answer

TV PICTURE KEEPS SHUTTING OFF BUT CAN STILL HEAR SOUND


hi
there is somwhere disconnect(circuit) on tv main board that appear when tv get hot
if your tv is lcd try to findout the problem in high voltag board

Jul 18, 2010 | Sharp LC32A37ME 32 in TV

1 Answer

I turn my tv on and and can hear it but no picture, then it turns off by itself and the red lamp light comes on


It is not a good idea for electronic products to be in storage for long periods of time. It is even a more poor idea to purchase used from a rental center; the result is more often than not a very bad experience.

With no picture, but working sound, it is a loss of the high voltage system. This is almost always failure of the high voltage autotransformer called the flyback and/or the HOT (horizontal output transistor) - which work together in producing the horizontal scan of the raster system and the high voltage to prduce the raster upon which the video picture is modulated.

The failure could very well be from HIGH temperature involved with the storage of the tv set.

The repair costs will be over $150 but not more than $300; depending on the exact parts that need replaced.

But: try the hard reset and the vibration/whacking test first to see if the moving business caused failures.

Hard Reset: Unplug for 4 hours, then try again. Do it twice.

Nov 27, 2008 | Televison & Video

2 Answers

Black screen with sound only no picture.


I have same problem,it appears to be the flyback
xfr.

Apr 18, 2008 | Hitachi 32UDX10S 32" TV

1 Answer

Sony KV27v15 DOA


The high voltage circuit also runs the horizontal deflection circuit and much of the rest as well. The horizontal problems you describe were a prelude to high voltage failure. If the TV is anywhere near 10 years old (how come you guys never give the age????) it isn't worth the cost of overhauling the high voltage circuit. You might be able to replace just the H.O.T. but the flyback is the source of the failure.

Jan 09, 2008 | Televison & Video

1 Answer

Grundig Xentia - sound but no picture


in your tv is malfunctioning high voltage, the audio is generated without the help of high voltage sistem how happens commonly in many other tv

Aug 07, 2007 | Grundig GF70-600 TV

1 Answer

Sound but no picture.


The problem with your television appears to be in the high voltage power supply .  This power supply supports the high voltage on the anode of the picture tube, and the voltages for the picture tube, and other parts of the TV. If you do not have a background in electronics, might I suggest that you have a TV technician to come to your location and work on the TV.

 

I hope this provides some help

Thank you

Shuttle83

May 24, 2007 | Emerson EWF2704 TV

2 Answers

Sony KV-27V55 no picture sound ok


I have a KV-27V55 and when I turn the TV on the picture and sound is good for about 30 minutes and then the picture goes off, but the sound is still on. It will come back on after a while.  What do I do?

 

Hog_mama

Jan 14, 2007 | Sony KV-27V55 27" TV

Not finding what you are looking for?
Televison & Video Logo

Related Topics:

122 people viewed this question

Ask a Question

Usually answered in minutes!

Top Zenith Televison & Video Experts

The Knight
The Knight

Level 3 Expert

75147 Answers

matt martin
matt martin

Level 3 Expert

1213 Answers

Computer Repairing
Computer Repairing

Level 3 Expert

14641 Answers

Are you a Zenith Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...