Top 13 Common LED and QLED TV (LCD) Panel Defect and DIY Diagnosis Guide
On this post today, we will discuss the top 13 common LED TV Panel (LCD) defect or problems as well as the DIY defect diagnosis technique.
This kind of defect is facing and experiencing by a less fortunate LED and QLED Televisions customer, no particular brand is exempted.
How to prevent a LED and QLED TV from defect?
Prevention is better than major repair. When it comes with Televisions, defect can be prevented when follows it's manual correctly.
Regular cleaning with a correct screen cleaning agent, regular dusting and install it in well ventilated area will also prevent TVs from breaking down to soon.
While modern Television is equipped with voltage regulators that has the ability to adapt current fluctuation from 90volts to 240 volts.
In my own experience, the use of AVR is still recommended in some area were electricity keep on fluctuating.
List of all Active TV Brand Worldwide
- Advent
- Asianet Digital LED TV
- Agath
- Akai
- Akari
- Akurra
- Alba (Harvard)
- Anitech
- Arcam
- Arise India
- Asuka
- Atlantic
- AVEL
- Bang & Olufsen
- Baumann Meyer
- BLUE Edge
- BPL india lmt
- Britannia
- Bush
- Cascade
- Cello Electronics
- Cenfonix
- CGE
- Changhong
- CloudWalker[3]
- Compal Electronics[4][5]
- Curtis Mathes Corporation
- Durabrand
- Electron
- Element
- Emerson
- Finlux (Vestel)
- FIRST
- Fujitsu
- Funai
- GC
- Gene's TV
- Haier
- Haver Electric
- Hesstar
- Hisense
- Hitachi
- HKC
- Horizont
- INB
- IZUMI
- Jensen Loudspeakers
- JVC
- Khind
- Kogan
- Konka
- KTC
- LG Electronics (founded as GoldStar, name changed 1995)
- Linsar
- Loewe
- Magnavox (subsidiary of Philips)
- Marantz
- Memorex
- Micromax
- Metz
- Mirc Electronics (Onida brand; India)
- Mobile360 Tv
- One
- OnePlus
- Onida
- Panasonic (National)
- Pensonic
- Philips
- Pilot Radio Corporation (Jerrold Electronics)
- Pioneer
- Planar Systems
- Polar
- Profilo Holding (brand Telefunken)
- ProScan
- RCA (HKC
- Rolsen Electronics
- SABA
- Salora
- Salora International
- Sampo Corp. of America
- Samsung
- Sansui
- Sanyo
- Sceptre
- Seiki Digital
- Seura
- Sharp
- Airis
- Shinco
- Silo Digital
- Skywalker
- Skyworth
- Soniq
- Sony
- Sparc
- Supra
- Tatung Company
- TCL
- Technisat
- Telebalt
- Telefunken
- TPV Technology
- TP Vision
- Trinium Electronics Philippines
- Vestel
- Videocon
- Vizio
- Veon
- Vu
- V WORLD
- Walton
- Westinghouse Digital
- Witjas
- Wybor
- Xiaomi
- Zenith Radio
Why my TV brand is not listed above?
All the TV that is not listed on the list above are brands that doesn't really produce their own product.
Rather they buy TVs from the registered manufacturer and stick there business logo in front and claim it there own, example Devant and Hisense.
While other is a subsidiaries of registered TV manufacturer, for example Coocaa and Skyworth.
The following 13 defects is very common to all LED and OLED Television of any brand.
The list below which include an actual images of the defect I personally encountered during my 10 years in my electronics repair business.
Flickering Image
Flickering is one of the most common factory defect to a modern LED Televisions customer faced around the globe.
In most case either the T-Con, LVDS Connectors, Flex wire or the TFT has an issues.
Is flickering display problem is covered with warranty?
Yes, a defect such as flickering display will be cover under warranty or guarantee, flickering will be considered as a factory defect cause by a defective parts or components such as the T-Con Board, VDS Connectors, Flex wire or the TFT.
To claim a warranty, you need to call your respective TV brand after sales or service center or any of their respective authorized service centers hotline.
T-Con Board Problem
In case of T-Con problem, the repair is fairly simple and quick. Usually with T-Con it's capacitors is failing, so disassemble the TV and verify by using VOM or look for a leaking or bulging capacitors.
Then replace the capacitor with a new. But if a new T-Con board is available, then changing it is highly recommended.
Is T-Con board problem covered with warranty?
Yes, T-Con is cover with warranty or guarantee. T-Con board is a major parts of the Television and as written on the most warranty certificate, all major parts and component is covered with at-least one year warranty. While other brand offering a two years warranty for major parts.
LVDS Connectors and Flex Wire
While for LVDS Connectors and Flex Wire, the repairs is more simple and quick. Usually, cleaning connector's metal plate with eraser will help but it is highly recommended to change the connectors with a new if available.
Is LVDS Connectors and Flex Wire problem is covered with warranty?
Yes, both LVDS Connector and Flex Wire is cover with warranty or guarantee. LVDS Connectors and Flex wires are be considered as a major component of the LED Television and as written on the most warranty certificate, all major parts and component is covered with at least one year warranty. While other brand offering a two years warranty for major parts.
TFT Problem
And finally, if found that the culprit is the TFT, then like T-Con, locate for a defective component usually a capacitor on PCB Board. Repair is also simple and quick but an experience technician is needed. However, if a new TFT is available, change it is highly recommended.
Is TFT problem covered with warranty?
Yes, TFT is cover with warranty or guarantee. TFT is a major component of the Television and as written on the most warranty certificate, all major parts and component is covered with at-least one year warranty. While other brand offering a two years warranty for major parts.
Partly Dimmed Display
Is dimmed display problem is covered with warranty?
Yes, a defect such as dimmed display is cover under warranty or guarantee, dimmed display will be considered as a factory defect cause by a defective parts or components such as the Backlight or TFT. To claim a warranty, call your respective TV brand after sales or service center or any of their respective authorized service centers hotline.
Backlight Problem
Is backlight problem covered with warranty?
Yes, backlight problem is covered with warranty or guarantee, backlight is considered as the major component of the Television and as written on the most warranty certificate, all major parts and component is covered with at-least one year warranty. While other brand offering a two years warranty for major parts.
TFT Problem
Is TFT problem covered with warranty?
Yes, TFT problem is covered with warranty or guarantee, TFT is one of the major part of Television and as written on the most warranty certificate, all major parts and component is covered with at-least one year warranty. While other brand offering a two years warranty for major parts. This defect is also subject for replacement.
H Bar Line | Horizontal Bar Line
Is H Bar Line or horizontal bar line on display problem is covered with warranty?
Yes, a defect such as H Bar Line or horizontal bar line on display is cover under warranty or guarantee, H Bar Line or horizontal bar line on display is considered as a factory defect cause by a defective components such as the COF IC. To claim a warranty, call your respective TV brand after sales or service center or any of their respective authorized service centers hotline.
COF or COG IC Problem
Is COF or COG IC problem covered with warranty?
Yes, COF or COF IC problem is covered with warranty or guarantee, COF or COF IC is one of the major components of Television screen and as written on the most warranty certificate, all major parts and component is covered with at-least one year warranty. While other brand offering a two years warranty for major parts. This defect is also subject for replacement.
H-Line | Horizontal Line
Is H-Line or horizontal line on display problem is covered with warranty?
Yes, a defect such as H-Line or horizontal line on display is cover under warranty or guarantee, H-Line or horizontal line on display is considered as a factory defect cause by a defective components such as the COF IC. To claim a warranty, call your respective TV brand after sales or service center or any of their respective authorized service centers hotline.
COF or COG IC Problem
Is COF or COG IC problem covered with warranty?
Yes, COF or COF IC problem is covered with warranty or guarantee, COF or COF IC is one of the major components of Television screen and as written on the most warranty certificate, all major parts and component is covered with at-least one year warranty. While other brand offering a two years warranty for major parts. This defect is also subject for replacement.
Multiple H-Line | Multiple Horizontal Line
Is H-Line or horizontal line on display problem is covered with warranty?
Yes, a defect such as Multiple H-Line or the multiple horizontal line on display is cover under warranty or guarantee, Multiple H-Line or multiple horizontal line on display is considered as a factory defect cause by a defective components such as the COF or COF IC. To claim a warranty, call your respective TV brand after sales or service center or any of their respective authorized service centers hotline.
COF or COG IC Problem
Is COF or COG IC problem covered with warranty?
Yes, COF or COF IC problem is covered with warranty or guarantee, COF or COF IC is one of the major components of Television screen and as written on the most warranty certificate, all major parts and component is covered with at-least one year warranty. While other brand offering a two years warranty for major parts. This defect is also subject for replacement.
No Display with Backlight
Is No Display with Backlight On problem is covered with warranty?
Yes, a defect such as No Display with Back Light On problem is cover under warranty or guarantee, No Display with Back Light On problem is considered as a factory defect cause by a defective components such as the capacitors or fuse. To claim a warranty, call your respective TV brand after sales or service center or any of their respective authorized service centers hotline.
Dimmed Display No Backlight
Is Dimmed Display No Backlight On problem is covered with warranty?
Yes, a defect such as Dimmed Display No Backlight problem is cover under warranty or guarantee, Dimmed Display No Backlight problem is considered as a factory defect cause by a defective components such as the LED bulb. To claim a warranty, call your respective TV brand after sales or service center or any of their respective authorized service centers hotline.
Partly Red
Is partly red display problem is covered with warranty?
Yes, a defect such as partly red display problem is cover by warranty or guarantee, partly red display problem is considered as a factory defect cause by a defective LCD or the glass itself. This defect is also known as discoloration. To claim a warranty, call your respective TV brand after sales or service center or any of their respective authorized service centers hotline.
Pixilated Image
Pixilated display is one of the most common factory defect to a modern LED Televisions customer faced around the globe. In most case the T-Con is a main culprit. Sometimes, software update can fixed the problem.
Is pixilated display problem is covered with warranty?
Yes, a defect such as pixilated display is cover with warranty or guarantee, pixilated display is considered as a factory defect cause by a defective parts or components such as the T-Con. To claim a warranty, you need to call your respective TV brand after sales or service center or any of their respective authorized service centers hotline.
T-Con Board Problem
In case of T-Con problem, the repair is fairly simple and quick. Usually with T-Con it's capacitors is failing, so disassemble the TV and verify by using VOM or look for a leaking or bulging capacitors. Then replace the capacitor with a new. But if a new T-Con board is available, then changing it is highly recommended.
Is T-Con board problem covered with warranty?
Yes, T-Con is cover with warranty or guarantee. T-Con board is a major parts of the Television and as written on the most warranty certificate, all major parts and component is covered with at-least one year warranty. While other brand offering a two years warranty for major parts.
Vertical Bar Line
Is V Bar Line or Vertical Bar Line on display problem is covered with warranty?
Yes, a defect such as V Bar Line or horizontal bar line on display is cover under warranty or guarantee, V Bar Line or vertical bar line on display is considered as a factory defect cause by a defective components such as the COF IC, COG IC, LVDS Connectors or Flex Wires. To claim a warranty, call your respective TV brand after sales or service center or any of their respective authorized service centers hotline.
COF or COG IC Problem
Is COF or COG IC problem covered with warranty?
Yes, COF or COF IC problem is covered with warranty or guarantee, COF or COF IC is one of the major components of Television screen and as written on the most warranty certificate, all major parts and component is covered with at-least one year warranty. While other brand offering a two years warranty for major parts. This defect is also subject for replacement.
LVDS Connectors and Flex Wire
While for LVDS Connectors and Flex Wire, the repairs is more simple and quick. Usually, cleaning connector's metal plate with eraser will help but it is highly recommended to change the connectors with a new if available.
Is LVDS Connectors and Flex Wire problem is covered with warranty?
Yes, both LVDS Connector and Flex Wire is cover with warranty or guarantee. LVDS Connectors and Flex wires are be considered as a major component of the LED Television and as written on the most warranty certificate, all major parts and component is covered with at least one year warranty. While other brand offering a two years warranty for major parts.
Multiple V Bar Line | Multiple Vertical Bar Line
Is Multiple V Bar Line or Multiple Vertical Bar Line on display problem is covered with warranty?
Yes, a defect such as V Bar Line or vertical bar line on display is cover under warranty or guarantee, V Bar Line or vertical bar line on display is considered as a factory defect cause by a defective components such as the COF IC, COG IC, LVDS Connectors or Flex Wires. To claim a warranty, call your respective TV brand after sales or service center or any of their respective authorized service centers hotline.
COF or COG IC Problem
Is COF or COG IC problem covered with warranty?
Yes, COF or COF IC problem is covered with warranty or guarantee, COF or COF IC is one of the major components of Television screen and as written on the most warranty certificate, all major parts and component is covered with at-least one year warranty. While other brand offering a two years warranty for major parts. This defect is also subject for replacement.
LVDS Connectors and Flex Wire
While for LVDS Connectors and Flex Wire, the repairs is more simple and quick. Usually, cleaning connector's metal plate with eraser will help but it is highly recommended to change the connectors with a new if available.
Is LVDS Connectors and Flex Wire problem is covered with warranty?
Yes, both LVDS Connector and Flex Wire is cover with warranty or guarantee. LVDS Connectors and Flex wires are be considered as a major component of the LED Television and as written on the most warranty certificate, all major parts and component is covered with at least one year warranty. While other brand offering a two years warranty for major parts.
V-Line | Vertical Line
Is V Line or Vertical Line on display problem is covered with warranty?
Yes, a defect such as V Line or vertical line on display is cover under warranty or guarantee, V Line or vertical line on display is considered as a factory defect cause by a defective components such as the COF IC, COG IC, LVDS Connectors or Flex Wires. To claim a warranty, call your respective TV brand after sales or service center or any of their respective authorized service centers hotline.
COF or COG IC Problem
Is COF or COG IC problem covered with warranty?
Yes, COF or COF IC problem is covered with warranty or guarantee, COF or COF IC is one of the major components of Television screen and as written on the most warranty certificate, all major parts and component is covered with at-least one year warranty. While other brand offering a two years warranty for major parts. This defect is also subject for replacement.
LVDS Connectors and Flex Wire
While for LVDS Connectors and Flex Wire, the repairs is more simple and quick. Usually, cleaning connector's metal plate with eraser will help but it is highly recommended to change the connectors with a new if available.
Is LVDS Connectors and Flex Wire problem is covered with warranty?
Yes, both LVDS Connector and Flex Wire is cover with warranty or guarantee. LVDS Connectors and Flex wires are be considered as a major component of the LED Television and as written on the most warranty certificate, all major parts and component is covered with at least one year warranty. While other brand offering a two years warranty for major parts.
Multiple V-Line | Vertical Line
Is Multiple V Line or Multiple Vertical Line on display problem is covered with warranty?
Yes, a defect such as V Bar Line or vertical bar line on display is cover under warranty or guarantee, V Line or vertical line on display is considered as a factory defect cause by a defective components such as the COF IC, COG IC, LVDS Connectors or Flex Wires. To claim a warranty, call your respective TV brand after sales or service center or any of their respective authorized service centers hotline.
COF or COG IC Problem
Is COF or COG IC problem covered with warranty?
Yes, COF or COF IC problem is covered with warranty or guarantee, COF or COF IC is one of the major components of Television screen and as written on the most warranty certificate, all major parts and component is covered with at-least one year warranty. While other brand offering a two years warranty for major parts. This defect is also subject for replacement.
LVDS Connectors and Flex Wire
While for LVDS Connectors and Flex Wire, the repairs is more simple and quick. Usually, cleaning connector's metal plate with eraser will help but it is highly recommended to change the connectors with a new if available.
Is LVDS Connectors and Flex Wire problem is covered with warranty?
Yes, both LVDS Connector and Flex Wire is cover with warranty or guarantee. LVDS Connectors and Flex wires are be considered as a major component of the LED Television and as written on the most warranty certificate, all major parts and component is covered with at least one year warranty. While other brand offering a two years warranty for major parts.
Conclusion:
Defect in LED and QLED as well as OLED TV is really frustrating and unpredictable. It'll will come like a thief at night, meaning no warning. Since, all the top 13 most common defect found in LED and QLED TV (LCD) Panel is classified factory defect, then don't worry for a major repair cost. It covered with warranty.
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