Question about Toshiba 55L7200U 55-Inch 1080p 3D LED HDTV

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Toshiba 52L7200U not picture, just toshiba logo

When you turn it on you get the red Toshiba logo on the screen, the power led is flashing green, then after a while the screen goes black and then the Toshiba logo comes back, it does this over and over and over, i let it sit there for a couple hours trying to power up and got nowhere with it.

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  • Toshiba Master
  • 76,186 Answers

Those flashes are fault indications. http://electronicshelponline.blogspot.com/ Visit the site linked here to get more details. Search the site by type in the brand name of your device in the search box at the top right of the display window to get gathered all the related posts.

Posted on Feb 07, 2017

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6 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

Hi there,
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Posted on Jan 02, 2017

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Anonymous

  • 1 Answer

SOURCE: power led blinks but no picture or sound

Had the same problem myself. Took some doing but I managed to find a service bulletin that I downloaded. The problem is with the siene module and all you need to do is unplug connector JP63A from the main board and your TV will work again.
Take the back off the TV (there are a lot of screws) and look on the left hand side of the main circuit board that is mounted in the center of the TV. You will see a small white connector that is labelled JP63A, simply unplug it. Plug the TV back in and let it reboot. That's it, should be able to watch immediately.

Posted on Mar 15, 2009

tvservice306

tvservice306

  • 458 Answers

SOURCE: Toshiba 42HP66 No Picture, Only Power Works

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

Posted on Oct 02, 2009

jerryg50

Jerry Greenberg

  • 1691 Answers

SOURCE: Toshiba 42hp66 has sound but no picture

Part of the power supply is in protect mode. There is most likely a short or something failed on one or more of the boards.
The service rep would swap out boards to locate the fault. Then he would leave the new board(s) in the set, and perform any necessary adjustments.
Take the set in for an estimate before approving repairs. There are many times these sets are not worth serving when they are out of warranty.
Jerry G.

Posted on Mar 05, 2010

welcomejee

Shahid Electronics

  • 10594 Answers

SOURCE: Toshiba Regza 42RV535U 42 in.

Hi,
TV needs back light inverter board replacement as discussed in chat session, required board is available with shopjimmy.com
Thanks.

Posted on Jan 25, 2011

tbreeze47

Tom Carson

  • 3083 Answers

SOURCE: Our Toshiba 42HL196 TV refuses

If the tv doesn't reset after being unplugged awhile, there's an internal problem, and the unit will have to be serviced. Make sure the cable input isn't loose, and that the cable cord is good. Aside from that, there's not much you can do. Some cities have mobile TV repairmen that will service the unit in your home, and it's much more convenient. Look in your Yellow Pages under TV Repair.
Good luck, and hope this helps.

Posted on Mar 01, 2011

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Hello, I have Toshiba TV Model #47L7500U. When I turn it on the TOSHIBA (red) logo comes on for a several seconds, then screen goes black. Green LED on front continually flashes green. No pic or sound


Those blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
http://homenol.blogspot.com/
http://electronicshelponline.blogspot.com/
If blinks continue without any pause, the main board is faulty.
Search the site by type in the "brand name" to your device, in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

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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...


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When turned on green light flashes and no picture


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Toshiba 42HP66 No Picture, Only Power Works


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

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1 Answer

Toshiba 36HF71 has sound but no picture


Same problem with mine. Relays click, sound, no picture and a flashing power LED. I finally found a schematic online. I went through the high voltage circuits and found the power transistor 2SC5570 was shorted out. There is also a pico fuse in that area but my was not open. I replaced the transistor and prayed the flyback transformer was not shorted. It wasn't, I'm watching my old 36" right now. Not a bad fix (17.00) bucks. Wonder what a service tech would have charged ;)

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