I bought a 25"Toshiba TV screen( Model NO. 2560XHE ) from a friend who was going finish some three years ago.Just recently I encountered a problem with this tv screen. There is no indication of picture display on the screen- a complete black out. Upon depressing the switch of the screen, a red light comes on, and after a while a green light (LED) comes on and off. Can you tell me what could be a possible cause of the problem with my TV please ?
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Re: Problem with my 25' Toshiba TV sCREEN
From the symptoms you describe, it seems the high voltage flyback
autotransformer has failed along with the horizontal amplifier (they
are slaved to each other). This could have happened during the moving process. The sound comes from the flyback
Well, the only way to solve this is to get a technician take a look at
the set, I'm afraid. Repairs could cost upto $100 or more, depending
upon the number of components that need to be replaced.
It may be worth getting
fixed up. If you decide to do so, call around, as shops have different
rates and different expertise. Many shops are hurting for work because
so many of the smaller sets are never repaired anymore; they are just
thrown out and replaced since the cost of a new set is sometimes as low
as the repair expense.
Hope that helps...Should you have any further questions,
please feel free to post them here.
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There is a large sand filled resistor on the main board close to where the power cord attaches that cracks. This will stop power until it cools enough to make the connection then heats up rapidly to open it again. It may be worth the trouble if you're handy with a soldering gun and can get the back off the TV. If not then I'd consider getting a flat screen.
My 52 in regza has a vertical line on the right side as well just under 2 years old, out of warranty and to costly to repair, I paid $2500 as well. The TV has been on its stand since the day I bought it and has been moved once.
I have read of others who have this problem as well, just google toshiba regza red line, or vertical line
I Too will never buy Toshiba products and I will tell everyone I can about the **** LCD Toshiba
There is no bulb in that model TV. There are 3 crt type tubes. You'll have to have a TV shop determine the cause. It could be many things like no high voltage present, cathode voltage missing. If the tubes are finished, the cost to replace them is quite high. It is a complicated repair since the tubes have to be properly aimed and converged. The repair cost in this worst case scenario would be greater than buying a flat screen TV with the same screen size.
I'm going to guess your friend's model is LC-37D64U. ( 37" screen; D64 series)
It's sounding like a power supply problem for the LCD screen. It's somewhat common problem for big LCD screens. But, too early for your friend to be having this problem with the TV.
I would have your friend use the warranty at this point. Last thing you want to do is void the warranty by opening up the TV.
I would first try leaving the TV unplugged for 30 mins so it can reset. Then, try turning it ON again.
If that doesn't work, it warranty time.
If your friend just bought it, have them exchange the TV for another one. I wouldn't want a TV that has problems that just came out of the box. The Sharp TV only has a 1 year warranty. Upgrade warranty life if possible. A repair for a problem like this would cost about $100 for someone to look at it; and $200 to $400 for the part at a TV repair shop.
I don't know your model, therefore I will tell you genericaly what the problem may be.
There are many things that can cause this type of fault. The response of the video amplifier stages would have to be checked right up through to the output that drives the projection. it is also possible that there is a fault with the colour demodulator. If the set uses projection tubes it is possible that the tubes are weak, or there is dirt in the optics. Colour demodulation problems can also cause the colours to not be correct. Many models using tubes have an optical transparent cooling fluid in front of the tubes. This fluid may have to be changed.
I decided I would try to repair it even though I didn't have any soldering experience and literally had to go buy a soldering iron. The parts costs me $26 including shipping and it took me about 4 hours to repair. I was so happy when I pressed the power button and my old friend came back to life. It is really simple to do and if you have experience you could probably finish in less than an hour. I hope this helps!
You need to take the Toshiba remote that came with the machine and go into a menu area that deals with convergence. Here's what the manual says:
This TV used 3 separate TV tubes, red, green, and blue. The R, G, and B images are pojected onto the screen wheree they converge to form a full-color picture. You can see a clear picture only when the three images converge correctly. Corvergence my drift over time, or if yo move the TV. I you can see clear images on your TV screen skip this procedure.
Make this adjustment only after the TV as been on for at least 30 minutes.
Press the TOUCH FOCUS (auto convergence) button on the front of the TV at the bottom.
The TV will enter into the convergence mode and adjust the converge automatically (that's what it says.)
TO ADJUST IT MANUALLY:
Press MENU, and the press < or > until the PICTURE menu appears.
Then press UP or DOWN to highlight CONVERGENCE.
Press < or > to display the Center Convergence menu
There's a lot more the book says, but, I can say from experience that you just go through the different sub areas of this menu and converge each color separately, and bingo, it's fixed.