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LCD LED Panel Failure and Faults

INDEX OF LCD LED E BOOKS

INDEX

1.      
My Special Request

2.      
COLLECTION OF TRICKS & HOW-LED LCD TV
SERVICE FROM VARIOUS SOURCES RELIABLE TECHNICIANs.

3.      
L.C.D L.E.D T.V Panels Connection and Voltages
Understanding.

4.      
Brief Details of Panels Connection Points.

5.      
Brief Details of Panels Connection Points.

6.      
Test Case “Ghost Image with slow motion”

7.      
Understanding the Tab, COF, and T-BGA

8.      
Types of panels.

9.      
Panel Cut-Circumcision.

1 0.  
Example of TCP.

1 1.  
Bonding Machine for installing New Tab COF I.Cs.

1 2.  
Symptom: Have audio but No Picture and black
screen.

1 3.  
Symptoms: A white screen.

1 4.  
Example voltage timing control circuit.

1 5.  
Philips LCD Panel Production QUANTA DISPLAYS
Problem.

1 6.  
Self Monitoring System of LCD LED TVs’.

1 7.  
Study Case Panel failure of LCD-TV Samsung
guide.

1 8.  
Here we show you different type of panels and
Modifications.

1 9.  
When you try to Modify LCD Panels you should
know the Basic knowledge of these connection as I mention.

2 0.  
Samsung Fault: Braking out with periodic
disappearance and falling in inhibiting vertical colored stripes.

2 1.  
Symptoms: when you turn on a dark gray
background how to solve.

2 2.  
Fault: 3/4 bottom image shows the distortion,
the top band is the norm.

2 3.  
Defect: The screen is divided almost in half,
top normal, low distortion.

2 4.  
HOW TO DIAGNOSE A FAILED T-CON BOARD - HOW TO
REPAIR A T-CON BOARD.

2 5.  
T-Con board AS-15HG problem.

2 6.  
Bad Gamma Correction Examples with cure.

2 7.  
Another Problem of AS-15-F IC in Sharp LCD TV
with by pass method.

2 8.  
Problem SANYO 42CA8Z Blurry images or blur
increasingly graying faintly visible image,

2 9.  
Understanding of 
LVDS cable failures.

3 0.  
SAMSUNG UN40C5000QFXZA  TROUBLESHOOTING VIDEO PROB-LEMS.

3 1.  
Green lines or a green screen defective main
board , LVDS , or T-CON.

3 2.  
Toshiba LCD 32AV Horizontal distortion.

33.  
Samsung Defect: low-contrast negative image with
a blue-green moiré.

34.  
FAILURE: When the screen is dark then (1 min)
horizontal bars passing through a couple of minutes in the 1-3 inch vertical
column. By pass

35.  
Samsung LE32B450C4WXRU Purple color all over the
screen also when you try to enter the setting manually.

36.  
Horizontal stripes Panel Number T#######VC V by
pass.

37.  
Problem low contrast, whitish image by pass.

38.  
secrete of LED Panel CLAA####FA04S By pass.

39.  
SAMSUNG LE26C350DW SAMSUNG LE32C350DW Panel by
pass.

40.  
 LCD TV
Use Panel V####B1-L01 T-CON V315B1- by pass.

41.  
#Problem: Bands appear immediately after
switching on the power supply…By Pass.

42.  
#Panel LC420WX5 Used in Many LCDs TVs’ LG,
PHILIPS By pass.

43.  
#SAMSUNG LTA320WT-L05 by Pass.

44.  
Panel Samsung LTA320W####2-L13, By Pass.

45.  
#Samsung LE32R71 picture distortion like net all
over the picture.

46.  
#SHARP LC  Models ,LC 
Model P50-70 By pass.

47.  
Photos defects panel Not Repairable.

48.  
Fault occurs defective discharge.

49.  
#Samsung LTA3##0WT-0 Problem is the failure of
the backlight (CCFL).

50.  
#LG model15LS1R CL-81.Fault Menu does not appear
correctly.

51.  
LG LCD 22##C30 Plain White Screen.

52.  
Frequent vertical stripes in the image across
the screen Solution Problem.

53.  
Fault: lay in the fact that when the image
appeared in just 30 seconds, the red almost was not.

54.  
FAULT : Trouble- 5 to 20 minutes (cold) a
horizontal bar moves vertically then another and another, 10 seconds through
out completely disappears, the problem occurs only with a tuner, AV on all
normal.

55.  
#SONY BRAVIA Absolutely identical symptoms
manifestations malfunction.

56.  
KDL46X3500 UNEVEN BACKLIGHTING Defect:  lights in the center of the raster for
defects.

57.  
Fault: No picture, and sometimes colored
vertical thin black horizontal stripes across the screen.

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5 8.  
LG Fault: The screen is horizontally moved on
top of the bottom band image is not visible but the graphics is visible clearly.

5 9.  
#SAMSUNG LE32S81.Fault: Slowly illuminates the
image, turning into two part.

6 0.  
PHILIPS26PF9946/12, CHASSIS AND LC4.2E PHILIPS
color stripes at half of 1/3 .

6 1.  
#HITACHI 37LD9000TA Problem: Stripes, ghost
pictures…

6 2.  
#SAMSUNG LED TV LE42D50#0 Fault:  Noise bar on picture of every input.

6 3.  
#TV LG #42PX3RVA-ZC MF Problem: Plasma with
green stripes in the form of image noise.

6 4.  
#PANEL# V400H1-L12 REV1 TCON V400H1 PETAL
NT39530H-C5208A Driver 1138 AA-A521AT Common Problem of this types of panel you
should Test and jump these connection as we shows.

6 5.  
#Sony Barvia Defect The image is not clear with
horizontal stripes.

6 6.  
#Panel M260TWR1 Modification.

6 7.  
#V315B3-L04 Panel Connection.

6 8.  
#PANEL LTF400HA03 APPENDIX I33VVBC-X01. MAJOR
OPEN CONNECTION By pass.

6 9.  
#Panel V260B1 Major Problem by pass.

7 0.  
Sony Came to malfunction doubles the image
vertically and "banding" in the upper part of the image by pass.

7 1.  
#SAMSUNG PANEL LTA320WT-L05 By pass.

7 2.  
PANEL T370XW02 V.5   TCON T370XW02 V.5 CB By Pass.

7 3.  
#PANEL LTY460HB08 460HBSR2LV1.1 by Pass.

7 4.  
#LTA320WT-L15, STRAP 320WTSL4LV0.0 by Pass.

7 5.  
#Test Case LC420WUD-SBM2 read care fully.

7 6.  
#Panel LC420W02 by pass.

7 7.  
#Panel P-MOD 46M1T by Pass.

7 8.  
#HT215F01-100 by pass.

7 9.  
#Philips 32PF3320/10 Panel CLAA216WA01 by pass.

8 0.  
#Panel LC320WUE-SAA1 stands in 32PFL5604 By
Pass.

8 1.  
#Panel LTA320AB02  T-CON - 320AB02CP2LV0.3,

8 2.  
#LTA320WT-LF2 DAEWOO DLP-32C1 by pass.

8 3.  
#Panel Samsung LTA320W2-L13, fee T-CON:
320W2C4LV6.4 by pass.

8 4.  
#V260B1-L11 and V260B1-by Pass.

8 5.  
#Panel LTA320WT-LF2 by Pass.

8 6.  
#Philips 32pf5321/12   Bars on picture.

8 7.  
#T260XW05 V0. T-con built on the top plate ..by
pass.

8 8.  
#Panasonic TX-R32LE8.

8 9.  
#Chinese fault.

9 0.  
#SAMSUNG PS42C91HX_NWT.

9 1.  
#Sharp KD603WE01, VCT6973G B3, LCD-module
LK315P3LZ10Z green border, as in the image sloping noise bands, with high
brightness in light areas in the image goes negative.

9 2.  
#SAMSUNG LA46M81B. Panel LTA460HB05 by pass.

9 3.  
#Panel AUO T420XW01 #V0 (LCD TV Sharp
LC-42PD2RU)  Modify by pass.

9 4.  
#Panel AUO T420XW01 #VC stands 42J bars…By pass.

9 5.  
#Panel LTA320WT-L06 T-CON #320WTC2LV3.7 by pass.

9 6.  
#Panel LC320WUE-SAA1 stands in #32PFL5604, By
Pass.

9 7.  
#Panel LTA320WT-LF2 by pass.

9 8.  
Model Samsung LE37M87BDX/BWT -Matrix T370HW02
v.2 by pass. 

9 9.  
#Panels CLAA215FA and #panel - CLAA215FA04 by
Pass.

1 100.                       
PANEL T370HW02 V1 by pass.

1 101.                       
T260XW04 V.3 Pads RM76180FC-086 driver
06B019CCA1 by pass.

1 102.                       
Panel LG LC470WUE by pass and much more,

1 103.                       
List of Test Cases Faults for LCD and LED TVs.

1 104.                       
List of LCD,LED TV Factory Reset and Service
modes.

1 105.                       
Software Information.

1 106.                       
Power supply repairing

1 107.                       
Main board repairing.

1 108.                       
Inverter and Blaster repairing and by pass.

1 109.                       
T-Con boards testing with true voltages guide.

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Learn how to repair Panel failures,T-con problem in LCD LED TVs

Learn how to repair Panel failures,T-con problem in LCD LED TVs with comprehensive guide line with Schematics and Pictures of Problems, This eBook (PDF) or (Doc)format was written for Advanced Level of Technician of LCD LED and Plasma TV repair and includes many Bypass method. If you want to become expert in this filed of LCD LED TV repair  than this is a good eBook for you. Maybe you have a broken LCD TV sitting at home or your workshop and you want to repair it quickly. No Problem who you are or what your reason is for wanting to repair LCD or LED TVs you have come to the right place.Once you have complete your purchase you will be sent a link to download a copy immediately.



Panels Problems,T-CON Problems, Power Supply Understanding

Panel modification and bypass methods.

LCD Inverter

Symptoms 

Symptoms of damage on each model of inverter board LCD is not necessarily equal to each other. It depends on the design ic inverter and its programs. Broadly speaking inverter board failure symptoms, among others that can be shown are:

• Black screen no picture, but the indicator light remains green flame.


• Black screen no picture, but no sound.


• Flash Screen on-off 1 or 2 times in a few seconds, then die continue or die stand-by (protectionism). On certain models may be shown with a red LED blinking.


• Raster britnes not uniform, due to there are some that are not lit CCFL

 

Various causes damage to the inverter board most frequently encountered.

• Elko dry (ESR values ​​enlarged)


• Fuse break up (as a chip), so there is no Vcc supply voltage (12v or 24v)


• Power FET or Transistors short


• Tranfo high voltage damaged. High voltage coil and a half short, enlarged resistance, or drop out. This can be determined by comparing the resistance of each tranfo High temperatures stress.


• CCFL lamp is damaged (or old), or less contact. To know this must be visually inspected by opening the backlight lamp casing.


• There are loose soldering contacts (observed with a magnifying glass)


• Driver IC is damaged

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 COLLECTION OF TRICKS & HOW-LED LCD TV SERVICE FROM VARIOUS SOURCES RELIABLE TECHNICIANs

Sony Blinks Codes

Meaning Sony blink codes when dead Protection

• Unit is dead, No Blinks - Problem in the standby power section.

• Continuous blink once a second, no pausing - No reply from the jungle (data bus is busy, shorted to ground, or held high), IK video path is defective.

• One blink - not used for the self-diagnosis

• Two Blinks - B + over current protection (OCP), unit goes to the standby mode then displays the 2 blink fault. Could be a short in the power supply of any of the circuits.

• Three Blinks - B + over voltage protection (OVP), unit goes to the standby mode then displays the 3 blink fault.

• Four Blinks - No vertical deflection (V STOP), Screen goes to a single horizontal line then the video signal muted.

•  Five Blinks
  - AKB circuit (automatic kine bias), the timer / standby indicator
  Blinks for about 30 seconds then goes to the self-diagnosis function. Something is wrong with the video. Check the video out. In addition, unit could be in IK blanking, try turning up screen slightly.

• Six Blinks - No Horizontal (H STOP), no raster, goes to the blinking self-diagnosis function immediately ..

• Seven Blinks - High voltage shutdown. The high voltage has exceeded 33k and the unit goes immediately into safety shutdown. Check power supply regulation and horizontal circuits.

• Eight Blinks - Problem with the audio (AUDIO), unit goes to standby and Blinks the self-diagnosis code. Check  the audio amp,

• Nine Blinks - Replace D 6116 and D 6301 on the "G" board, do not resolder as this will fix the problem temporary. Or Panel Module Error or Thermal Error. If
  it is intermittent 9 Blinks, meaning sometimes the TV comes on and
  other times you get flashing, then change the switching regulator on the
  "G" board or check connections. Make sure the regulator is -12 or -13 (negitive).

• Ten Blinks - Check Q8014 and Q8013 for shorts, leakage, or bad solder connections on the "D" board. If the transistors are bad, check R8051 and IC8005, also on the "D" board.

Intermittent problems? This is a great feature. You
can also bring up these fault codes on-screen to see a list of the
problem numbers with the abbreviation of the problem and the number of
times this problem has occurred. This is slightly different than entering the service mode. To see the diagnostic screen, press the following buttons: Display, Channel, 5, volume Minus, (not plus) then Power. This brings up a screen with a list of the problems and number of times they have Occurred. Each of the problems named, are abbreviated as, "OCP", "OVP", "V STOP", ETC. We
have repeated them in parentheses in the text for the "Blinks"
described above so you can correlate between the diagnostic screen and
the blink codes.

Now that you know about these self-diagnostics, how do you use them? Say that you have a set with a black screen. You see that the LED is blinking four times. This would tell you that you have no vertical sweep, the which is why the video is muted. If it was blinking 6 times, you would know that you have a horizontal fault. It's not a sure cure ..

IMPORTANT: After you repair the unit, you MUST clear the values ​​on this diagnostic screen. These
codes do not reset after the fault Themselves is corrected, so if you
do not clear them, you'll be seeing "old" fault codes the next time you
enter this screen.

Clearing is done by going into the service mode (display, channel, 5, volume plus, then power). Press 8 and Enter, the which returns everything to the factory preset condition.

Imran Ashraf Khan