Question about Televison & Video

1 Answer

Toshiba 50h60 tv has power but no picture - Televison & Video

Posted by on

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Novelist:

    An expert who has written 50 answers of more than 400 characters.

  • Expert
  • 93 Answers

Although most HD TVs are 120 VAC devices, they actually have step-down power transmission sectios that take the line voltage from the wall outlet and turns it into the 13.8 VDC needed to run the HD TV. So, what does this have to do with the price of tea anywhere? The answer is that if you look at the output side of the power supply circuit, you will see the 13.8 VDC power signal appearing. That voltage, though, is there to tell you that power is available.

Now, take a look at the power supply circuit either in the owner's manual (if it is supplied) or on the lid of the power supply in the HD TV itself (warning, only open this device if you are familiar with and comfortable with working with voltages and a DC volt meter) and you will see at low-amperage circuit -- in the 1 to 5 amp range -- and a high-amperage circuit -- up to 20 amps. This is the important circuit because it drives the TV.

You will have to go into this device while it is on, so extra careful that you stay away from the AC input. You can look at the DC output because it is low-voltage.

Placing the probes of a volt-meter (in the appropriate range setting) across with the black (-) lead to ground and the red lead on the high-amp positive lead, measure the voltage. You should read 13.8 VDC or a similar reading. If you do not see any voltage on this terminal -- which I suspect the the case -- then you will have to replace the power supply. If you feel comfortable handling this repair, you can do it yourself. I would suggest taking it back to the store where you bought it and have them fix it -- to keep the warranty intacty -- or have them send it back to the manufacturer.

Posted on Nov 26, 2014

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.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
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

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2 Answers

The power light blinks 3 times. What does this mean?


Toshiba Flat Panel Television how-to instructions, help and tips Three times so far, just the tv not the cable. Toshiba Flat Panel .... Timer light blinking red. TV will not turn on by power button on TV or using the ...
tv.manualsonline.com/.../toshiba/.../flat_panel.../product_problem toshiba.justanswer.com

Mar 11, 2011 | Toshiba Televison & Video

2 Answers

42rv530u toshiba tv no sound no picture change power supply and main board


The 42RV530U is known to develop problems in both the power board and the main board. You can check out our power board repair service at
http://www.coppelltvrepair.com/p/442/repair-service-for-toshiba-42rv530u-power-board-75010942-dead-tv-or-clicking-on-and-off-problem
and I'd also recommend that you search for 42RV530U at http://blog.coppelltvrepair.com as we will eventually release an article on how to test the board.
Hope this helps.

Aug 12, 2010 | Toshiba REGZA 42RV530U 42 in. LCD HDTV

1 Answer

I have a Toshiba 50hp66 that the power light cycles from red to green with a simultaneous clicking of a relay on the power board. I check for power at a few points per the Toshiba service manual and iy is...


Check the fuses on the ysus & zsus boards. Are any fuses on boards open . Disconect power cabels to ysus board first {board on left} . put tv on . if the light is green the ysus board must be replaced.

Mar 28, 2010 | Toshiba TheaterWide 50HP16 50 in. Plasma...

1 Answer

Toshiba 42HP66 No Picture, Only Power Works


try replaced z board Manufacturer Toshiba Part Number 75003032 Description ZSUS PCB ASSY

Oct 02, 2009 | Toshiba 42HP66 42 in. LCD Television

1 Answer

Picture on 36 inch toshiba tv out


I had the same problem on my 61" RCA TV... The switch for the power/channel changing buttons seems to be a faulty product... However if you are a little technical you can open up the front of the TV and disconnect the button panel from the tv and just use the remote to operate it.

Jul 02, 2009 | Toshiba Televison & Video

1 Answer

Picture goes black


GO TO MENU, THEN SETUP, SCROLL DOWN TO TIMER AND MAKE SURE IT IS ON 0 (ZERO) MIN. SOUNDS LIKE ITS PROGRAMMED TO GO SLEEPAFTER A CERTAIN TIME. THIS TV ALSO CUTS OFF AUTOMATICALLY IN 15 MIN. IF ITS TUNED TO A VACANT CHANNEL( NO PICTURE).

Jun 18, 2008 | Toshiba 36AF42 36" TV

1 Answer

42" Toshiba Plasma TV no picture or sound


My experience with 42" plasma tv's with no picture or sound was a missing power supply voltage. On the power supply board check voltages on the plug. The voltages should be marked on the board,

Mar 01, 2008 | Toshiba 42WP27 42 in. Plasma Television

1 Answer

Tv picture


Solder any / all bad connects in power supply,vertical,horiz &
video circuitry,esp. regulator IC's..................T.

Jan 09, 2008 | Toshiba 32AF43 32" TV

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

Related Topics:

32 people viewed this question

Ask a Question

Usually answered in minutes!

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74383 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Electro Med Services...
Electro Med Services...

Level 3 Expert

6694 Answers

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

Answer questions

Manuals & User Guides

Loading...