LED/LCD TV Backlight Use for Lg 55inch INNOTEK LED Strips
ES Model: ES-032-A/5 ES-032-B/6
Brands: use for Lg
Complete Set: 1SET=5*A+5*B
Length: A: 549MM B: 606MM
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Products Description
ES-032 LED/LCD TV BACKLIGHT use for Lg 55'' INNOTEK DRT 3.0 55" A/B TYPE REV01 140107 (10)
ES Model: ES-032-A/5 ES-032-B/6 Brands: use for Lg Complete Set: 1SET=5*A+5*B Length: A: 549MM B: 606MM Original Code:
INNOTEK DRT 3.0 55" A TYPE REV01 140107
INNOTEK DRT 3.0 55" B TYPE REV01 140107
DIRECT 3.0 55INCH REV0.1 180409
LZ5501 LGEPWA-DL84_R
LZ5501 LGEPWA-DL84_L
Substitute Parts: 6916L-2232A, 6916L-2233A 6916L-1730A, 6916L-1731A 6916L-1987A, 6916L-1988A, 6916L-1989A, 6916L-1990A 6916L-1991A, 6916L-1992A T550HVF04.2 LED Strips
HC550DUN-VSHS2-11XX LED Strips
Factory direct sales, more discounts for larger quantities. Support customization by drawing/sample, no need for technical modification, direct installation
The interface of the light bar is consistent, full power large chip lamp beads
Light bar details visible craftsmanship, plate heat dissipation fast life long
more about us
our advantages
01
Years of industry experience
Provide customers with better
◆Own a professional R&D and production base, 10 years of production experience
◆Million-level dust-free workshop, equipped with high-performance testing equipment
02
Quality control at every level
High quality pass rate
◆Having a complete and scientific quality management system
◆Mature and standardized production operations, insisting on survival by quality
03
Accurate delivery time
High production efficiency
◆Advanced automated production equipment to reduce production links
◆Daily output can reach up to 45,000 pieces
04
Attentive service
Provide technical support
◆Have experienced sales and technical teams
◆Reply in time and solve problems
Our Certifications
We have successfully obtained the ISO9001:2000 certification, highlighting our adherence to international quality management standards.
about lED TV backlight FAQ
Q: What to do if you encounter an LCD TV backlight failure?
A: LCD TV use for a long time, there will always be large and small problems, we often encounter problems is the LCD TV backlight failure , I believe that this term sounds very rusty, but it does not matter, the next, we specifically analyze you, you will know how to repair the LCD TV backlight failure.
LCD TV backlight failure
First, the LCD TV backlight failure phenomenon
1, boot screen
In the maintenance also met is the screen lamp damage; appear after a time when the screen, sound normal. This phenomenon is a digital board is bad, the second is the machine wire contact is not good.
2, boot no image and no sound
Power on no image and no sound, the power light flashes into constant light, the screen flashes a white light in the boot moment, this fault is mostly backlight driver board damage.
3, boot three no
Power on three no, power light does not light. The first is a bad power supply board, the second is the CPU part of the work is not normal; light flash can not boot: CPU bus is not working properly or boot program IC is bad, BIOSIC and poor contact between the CPU.
Second, LCD TV backlight failure causes
Backlight in the AC power-on moment LCD screen brightly a moment on the off, at this time, accompanied by sound, remote control, panel key control functions are normal. This phenomenon is caused by the backlight circuit protection, the reason is mostly backlight boost board power supply abnormalities. For CCFL backlight circuit, if a backlight tube open circuit (common for the backlight booster board lamp socket open welding or socket is not inserted tightly caused by the circuit protection) or a lamp fracture can cause the above failure.
Third, repair LCD TV backlight repair
LCD TV backlight switching no change, accompanied by sound, remote control, panel key control are normal. This failure to detect the following working conditions: the backlight boost board circuit power supply, common large screen for 24 volts, very few with 120 volts, small screen is generally 12 volts; CPU control circuit output of the backlight boost board oscillator switch control signal, common for high level start, more than three to five volts of the lamp light control signal. If the above working conditions are available, you can replace the backlight booster board, if the replacement of the backlight booster board after the failure of the first, more for the LCD screen components in the backlight tube damage.
Q: How to accurately judge the LCD TV backlight bar failure?
A: LCD TV backlight system is its core component, backlight strip failure will lead to uneven screen brightness, can not light up and other problems. This article describes how to judge and determine whether the LCD TV backlight strip failure, including observation of the phenomenon, operational testing, circuit testing, direct inspection and comprehensive analysis and other methods. Determine the backlight strip failure need to combine a variety of means for troubleshooting and repair.
LCD TV's backlight system is one of the core components of its display function, especially for LED backlight TV, once the backlight strip failure, it will lead to uneven screen brightness, can not be lit or dark image and other problems.
We will introduce in detail how to judge and determine whether the LCD TV backlight bar is faulty.
1. Observation phenomenon and preliminary inspection
Visual inspection method:
First of all, turn on the TV in a dark environment, observe whether the screen has a faint glow. If the entire screen is dark when the image is turned off, without any visible light source, it may be the whole or part of the backlight strip damage.
If the brightness of the screen is significantly reduced and adjusting the brightness control is ineffective, it also suggests that there may be a backlighting problem.
Operation Test:
Try adjusting different signal sources and channels and observe whether the fault phenomenon is consistent. If the problem is universal, then the problem points to the backlight system more likely.
2. Circuit Testing
Power supply voltage check:
Check whether the power supply voltage of the backlight driver control circuit is normal. If the power supply voltage is abnormal, then it may be a problem with the power supply board; if the power supply is normal, then the backlight components need to be further investigated.
High voltage inverter measurement:
Measure whether the output of the TV's high-voltage inverter circuit is normal. The high-voltage inverter is responsible for converting low-voltage DC power to the high-voltage AC power needed to drive the LED backlight. If the high voltage output is present, the inverter is working properly and the point of failure is more likely located in the backlight bar itself.
Resistance/Current Test:
For suspected faulty backlight strips, a multimeter can be used to conduct resistance measurements to see if there is an open circuit, short circuit, or abnormal resistance value. In addition, the current test can also be used to find out if there is too much current (overload) or too little current (failure) in the strip.
3. Direct inspection of the backlight strip Disassemble the unit for inspection
Open the TV case to check the LED backlight bar directly while ensuring safety. Usually the backlight strip consists of a series of LED beads, if there are obvious burn marks, such as beads cracked, discolored or missing, etc., it can be judged as a failure of the strip.
Functionality test:
You can try to replace the new backlight strip, if the TV returns to normal after replacement, it undoubtedly proves that there is a problem with the original backlight strip.
4. Comprehensive analysis and maintenance
Combine all the above inspection results to make a comprehensive assessment of the fault, and follow the principle of gradual investigation and solution from easy to difficult. If the technical conditions allow, you can use professional instruments for further precise testing and positioning.
In conclusion, determining whether the LCD TV backlight bar is faulty is a process that combines visual observation, circuit measurement, and actual replacement testing. After eliminating other potential problems, targeted and detailed testing and analysis of the backlight bar will help to quickly locate and repair the fault and restore the normal use of the TV.
