LED TV REPAIR:
Diagnosing and Fixing A Led TV With No Picture
• Problems can often occur with even relatively new LED TVs. Some customers report their screen going black shortly after turning on the television, even though the TV's speakers continue to produce sound. You can test and rule out a number of things before concluding that your TV has a hardware defect.
First, check the input settings of your television. Often, users will experience a dark screen when first turning on their television if the selected input corresponds with a turned-off or unplugged input, such as a gaming system or DVD player. If the problem persists, try reconnecting all cables on the back or sides of the television. It's possible that one of your cables has gone dead. If you have access to other cables, try swapping these in and see if the problem persists. Some customers report that turning the television off and unplugging it for an extended period of time, up to 24 hours, can fix the black-screen issue.
Power Supply Issues
• If you've tried all of these suggestions and problems persist, it's possible that the power supply inside the television is defective or broken. The power supply for most LED televisions will cost around $150, with labor costs of around $250. Unless you have a fair amount of TV repair expertise, this is probably not the sort of repair you'd attempt yourself. Also be aware that occasionally, especially with older & new television models, we have all parts in stock.
Our Tech experienced in the service and repair of all major brands including - Samsung Led Tv, Sony Led Tv, Sharp Led Tv, Sanyo Led Tv, Toshiba Led Tv, Panasonic Led Tv, Lg Led Tv, Rca Led Tv, Hitachi Led Tv, Jvc Led Tv, Philips Led Tv, Olevia Led Tv, Daytek Led Tv, ILO Led Tv, Insignia Led Tv, Polaroid Led Tv, Vizio Led Tv, Viore Led Tv, View Sonic Led Tv.
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LED flat panel television info..
Flat Panel LED Television Display Possibly the first true all LED flat panel television TV screen was developed, demonstrated and documented by J. P. Mitchell in 1977. The modular, scalable display was initially designed with hundreds of MV50 LEDs and a newly available TTL memory addressing circuit from National Semiconductor.The ¼ in thin flat panel prototype and the scientific paper were displayed at the 29th ISEF expo sponsored by the Society for Science and the Public in Washington D.C. May 1978. The technical display received awards and recognition.Awards included NASA,General Motors Corporation, and recognition from faculty and area Universities and the IEEE. The monochromatic LED prototype remains operational. An LCD (liquid crystal display) matrix design was also cited in the LED paper as an alternative x-y scan technology and as a future alternate television display method. The replacement of the 70 year+ high-voltage analog system (cathode-ray tube technology) with a digital x-y scan system has been significant. Displacement of the electromagnetic scan systems included the removal of inductive deflection, electron beam and color convergence circuits. The digital x-y scan system has helped the modern television to “collapse” into its current thin form factor. In 1978, Mitchell also submitted his paper to the Westinghouse Science Talent Search contest, where he received an Honorable Mention. Mitchell also presented his paper at the 90th Session of The Iowa Academy of Science April 21–22, 1978, at the University of Northern Iowa, Cedar Falls, Iowa.
The 1977 model was monochromatic by design. Efficient blue LEDs did not arrive for another decade. Large displays now use high-brightness diodes to generate a wide spectrum color palette. It took three decades and organic electroluminescent materials for Sony to introduce an LED TV: the Sony XEL-1 OLED screen which was marketed in 2009.
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