Question about Sony FD Trinitron WEGA KV-32HS500 32" TV

2 Answers

No Picture, No Sound

The set went blank. No sound, no picture. Left it set for a few days and tried it and low and behold it worked, for about a week. I can hear a humming sound when it is turned on, like the power supply is on. The red light blinks in the front panel. Any ideas?

Posted by on

  • landen_davis Aug 31, 2008

    when i turn on my tv a humming sound. turned it off and on it is still there what can i do?

×

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Guru:

    An expert who has written 7 tips or uploaded 3 video tips

  • Master
  • 859 Answers

Hello,

Dust tends to be attracted to static generating devices like TVs and this dust creates a insulating blanket on circuit boards which then fails to allow the board to cool down properly. Specifically, the board(s) that converts the power coming in from the wall socket to various voltages and amperages to supply the variety of functions in a modern TV today. Additionally, to this dust blanket effect, circuit boards that heat up and then cool down often suffer from "Electronic Fatigue". This is a phenomena resulting from the molecular structure of the boards base material structure changing state many many times (cold/hot, hot/cold). Eventually, the fatigue causes come components, resistors for example, to fall out of their designed spec and range of tolerance. Once the electronic components fall out of its range of tolerance the engineered design of the circuit board will either fail completely or work weakly and then fail. In electronics, for TVs in this example, the physics of the circuit board and its onboard IC chips either work correctly or don't and when they don't a fail safe device turns energy off to all onboard systems to avoid extra ordinary damage that would most likely result in a fire.. or worse.

Sorry this sounds long winded but, I believe in giving a thorough answer and to not assume what your knowledge level is or isn't.

Back in the Day, what we termed TVs like your example was a TV 'on the blink'.

Have fun shopping for your new HD Flat Panel,
Worldvet

Posted on May 22, 2008

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Expert
  • 56 Answers

Bulb error

Posted on May 22, 2008

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.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

I have a GE TV model: 27GT271 and no sound


Possible cause of the problrm is bad/poor solder on the grounds for the tuner circuit shield an the bottom (solder side) of the circuit board. Grounds need a wire jumper from point to point. This was a common problem for those sets and ocassionally it would take out the eeprom chip with it. (Various other problems were shrinking picture/fuzzy picture and intermitt. power)

May 14, 2009 | GE 27GT271 TV

2 Answers

The picture went from clear to snow, but the sound remained clea


Flyback is going out in this unit and would cost $120 for a new flyback if I were to repair it for you. So you have two choices have it repaired on recycle it! The repair these days on TUBE tv's are not very cheap because of having to find parts for them. Rulds2008

May 14, 2009 | Sony KV-36XBR400 36" TV

1 Answer

Screen goes blank while watching


Couple of things:

1) When the picture "stops", does the standby light blink at all?
2) Can you post the model number please?

Some of these sets are known to have problems with the picture tube as it starts to age. There are some workarounds for this that can extend the life of the set for a short time. Without the model number though, I can't confirm that this set is in that catagory. Please supply responses to the issues above and we'll continue from there.

Thanks,
Dan

Sep 22, 2008 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

Polaroid ttm-2401


To me, sounds like a picture tube issue. horizontal / vertical controls don't fix it. then its dead.

Jun 22, 2008 | Polaroid TTM-2401 TV

1 Answer

Philips 27PT6441/37


There is a install kit 483531057673 for this model when the set is dead. The kit will contain 7404 and the Horizontal Driver Transformer 5402 along with resistors that will limit stress on 7404 and includes complete instructions

May 03, 2008 | Philips 27PT6441 27" TV

2 Answers

No picture, sound ok


Rca has been known to have bad solder joints in the deflection circuits. Usually around the flyback and transformers.. check it over real good. Just be careful as you can still get shocked after the powers removed the capacitors and picture tube will hold a charge in them.

Jan 21, 2008 | RCA F36649 36" TV

2 Answers

Sound, but no picture. Standby light blinking 5 times


A few weeks ago my set started flashing to a black screen. Now a couple of weeks later, i have no picture, but the set turns on and i have sound. The standby light is flashing. I purchased the set in 2000 so it is seven years old. This is the first problem. Could it be all three of the bulbs? Could it be all three of the bulbs? no as you say that sound is ok that means your power supply &high voltage section is ok. please check chroma ic luminance section or system control section stand by ckt ihanks

Sep 11, 2007 | Sony KP-53HS10 TV

8 Answers

Tv has sound but no picture


Sounds like you have lost video somewhere in the video circuits. Possibly the picture tube could have gone bad or lost filiament voltage. You can check to see if you have high voltage by holding your bare arm close to the screen. The hairs will stand up if you have high voltage. Absence of high voltage will also cause a black screen,but the sound might not work either since on some sets the power for the sound is supplied from the same circuit as the high voltage. Stargazer

Jan 24, 2007 | RCA G36710 36" TV

1 Answer

TV wont turn on?


this product has a bunch of exotic semiconductors that only a tech could replace in my parleyance its called NECO

Dec 08, 2006 | RCA 27R410T 27" TV

1 Answer

No picture,no sound,blank


This set is very popular for the capacitors to dry upa and go bad in the main SMPS as well as the switching power supply. If you have no know how on how to test capacitors or solid state electronics please take the set into a repair shop for an estimate

Jul 28, 2006 | Sanyo AVM-3659S 36" TV

Not finding what you are looking for?
Sony FD Trinitron WEGA KV-32HS500 32" TV Logo

72 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sony Televison & Video Experts

kakima

Level 3 Expert

98921 Answers

The Knight
The Knight

Level 3 Expert

69955 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

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

Answer questions

Manuals & User Guides

Loading...