Question about Toshiba Televison & Video
Toshiba 50L1400U Lower half of screen dark shading. Can see menu. Help needed to isolate to board or LED strip. Thanks
According to the service manual this set has 2 separate power supply voltages for the LED's and it sounds like there is at least one bad lamp in the panel, if you have a volt meter test the 2 and see if one is at a lower voltage than the other...one other possibility would be if you have Tcon board issues
Posted on Nov 17, 2017
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Posted on Jan 02, 2017
might be y drive board bottom half it connects to the y sus board usually on the left side if your looking at the set with the back off
Posted on Jul 05, 2007
Sound like the phones software might be corrupted, you can reinstall the whole system, read on...
You can hard reset the phone (Factory Settings)
This will reinstall the operating system inside the phone back to how it first was.
(internal memory gets formatted then the rom reloads the os back)
(Solves all kinds of problems.)
Switch the phone "OFF"
Hold "3" (button) + "Green Call" (button) + "*" (star button)
Switch the phone "ON" while holding the above three buttons.
Continue holding for about 20 seconds then let go.
Please note this will format all the saved information stored in phone memory. including phonebook numbers (if not stored on SIM card).
Try to make backups first.
You have been "Warned".
Best of Luck.
Posted on Jun 25, 2008
Your TV most likely has a Convergence Chip Failure ( common problem )
Here are some of the most common symptoms and example photos of a convergence problem
You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together convergence repair kits for most models.
The kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, etc. Everything you will need to do the repair yourself.
Posted on May 14, 2009
The lower "Y Buffer" board is defective. Best repaired by a technician, or contact Phillips support for the part if you think you are able to replace a small circuit board on your own.
Posted on May 21, 2009
SOURCE: TWO DARK SPOTS IN THE SCREEN
My tv set as the same problem. By doing some research on the internet found out it is the optical block. Very expensive to fix if you do not have extended warranty coverage. Apparently, it is not an isolated case and many many many owners of this set are experiencing discoloration after owning it for a few years. Sony will tell you they don't know anything about it. Visit this web link for detailed information. http://sites.google.com/site/sonylcdrptvproblems/sonyrearprojectionlcdtv-opticalblock
There's a lawsuit pending. Sony apparently knew about these defects and they continued selling them. No more Sony for me. I feel betrayed. Whta is worst, when you call Sony they play dumb and treat you like you are an ignorant person. Normal tear and wear they say. Only 4 yrs with this unit and paid more than $3k. Normal? Unacceptable.
Posted on Jan 28, 2010
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