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Haier HL42R - 42" LCD TV, Руководство по обслуживанию, Страница: 54 / 54

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Haier HL42R - 42

54

Mechanlcal 

Nolse

When turn 

panel,appear 

cacophony 

Caused by Mechanica noise of backlight 

unit

Ripple Connectric 

circle 

Causeed by between mechanism and 

Panel

B/L off   

B/L lose action 

*Connect badness between wire and 

electrode

B/L dark 

B/L brightness 

darker than normal

*Connect badness 

Short between wire and electrode 

B/L wire 

damaged 

B/L wire damaged 

Operation abnormal or systemic noise 

B/L wire 

open 

Without backlight 

Operation abnormal or systemic noise 

B/L shut 

down 

B/L shutdown in 

sometime

Short between lamp housing and wire, Because 

consume power too much 

F/M

F/M in B/L ,white, 

back Rotundity or 

wire like 

F/M in B/L unit 

Failure Mode

Part Name 

Description  Phenomena Failure 

cause 

Light

leakage

Brightness at 

bottom of LCM 

brighter than 

normal

B/L unit badness 

Uniformity

B/L brightness 

asymmetric

Sheet in B/L unit is uneven 

Mechanlcal

or B/L 

Mount hole

Lack screw or 

screw damage

*Lack screw 

Screw damage 

Содержание HL42R - 42" LCD TV

Страница 1: ...1 HL42R TV 8888 126 ...

Страница 2: ... warnings or cautions to advise non technical individuals of potential dangers in attempting to service a product Products powered b electricity should be serviced or repaired only by experienced professional technicians Any attempt to service or repair the product deal with in this service information by anyone else could result in serious injury or death ...

Страница 3: ...panel controls 22 5 2 Back panel controls 23 5 3 Setting Up Your Remote Control 24 6 DISASSEMBLY INSTRUCTIONS 25 6 1 whole machine 26 6 2 Base subassembly 27 6 3 Back cover subassembly 27 6 4 Screen bracket subassembly 28 6 5 Front frame subassembly 28 6 6 Wire subassembly Connection Sketch Interpretat 29 6 6 1 Wire Photo 29 6 6 2 Components List 29 7 MEASUREMENTS AND ADJUSTMENTS 30 8 BLOCK DIAGRA...

Страница 4: ...o not use your TV near water For example do not use it near a bath tub wash bowl kitchen sink laundry tub in a wet basement or near a swimming pool Cleaning Unplug your TV before cleaning Do not use liquid or aerosol cleaners Use only a damp cloth to clean the exterior of your TV Ventilation Slots and openings in the cabinet and the back or bottom are provided for ventilation reliable operation an...

Страница 5: ... from lightning and power line surges Servicing Do not attempt to service your TV yourself because opening or removing covers may expose you to angerous voltage or other hazards Refer all servicing to qualified service personnel Replacement parts When replacement parts are required make sure that the service technician uses replacement parts specified by the manufacturer that have the same charact...

Страница 6: ...transistors which provide exceptionally sharp video quality Occasionally a few non active pixels may appear on the screen as a fixed blue green or red point These non active pixels do not adversely affect the performance of your TV and are not considered defects 2 Specification Model 5 Screen size inch Aspect ratio 16 9 Resolution 1920X1080 Response Time ms 8 GRAY TO GRAY Angel of view 1780 Color ...

Страница 7: ...Location No Parts number Description A Board Power Board B Board Main Board 3 2 Main Board 3 2 1 Function Description Main Board Process signal which incept from exterior equipmentˈthen translate into signal that panel can display Signal flowing chart ...

Страница 8: ...8 3 2 2 Connector definition Power connector CNA1 MTk5380 ...

Страница 9: ...ber Signal name Description 1 5V Supply the Power of bright and IR receiver 2 IR Receive IR signal 3 RED Show red when TV standby 4 BLUE Show blue when TV working 5 GND Ground 6 NC NC Pin number Signal name Description 1 GND Ground 2 AD0 Control Power CH CH 3 AD1 Control Menu V V INPUT Pin number Signal name Description 1 BKANJ Control the backlight of pannel 2 BKEN The system turn on or turn off ...

Страница 10: ...t use 17 A1P 2 LVDS VDD 10 Not use 18 A1N 3 LVDS VDD 11 Not use 19 A2P 4 LVDS VDD 12 Not use 20 A2N 5 Not use 13 A0P 21 GND 6 Not use 14 A0N 22 GND 7 GND 15 GND 23 CK1P 8 GND 16 LVDS_SEL 24 CK1N Pin number Signal name 25 A3P 26 A3N 27 GND 28 GND 29 Not use 30 Not use Pin number Signal name Description 1 18V Power of Audio power amp 2 18V Power of Audio power amp 3 GND Ground 4 GND Ground Pin numbe...

Страница 11: ...1 3 3 2 Connector definition CONNECTOR CN2 CN3 CONNECTOR CN4 CN2 CN3 Signal name 1 24V 2 24V 3 24V 4 24V 5 24V 6 GND 7 GND 8 GND 9 GND 10 GND CN4 Signal name 1 ON OFF 2 GND 3 5VSB 4 GND 5 GND 6 12V 7 12V ...

Страница 12: ...GND GND 7 GND GND 8 GND GND 9 GND GND 10 RO 0 N ODD LVDS SINGAL 11 RO 0 P ODD LVDS SINGAL 12 RO 1 N ODD LVDS SINGAL 13 RO 1 P ODD LVDS SINGAL 14 RO 2 N ODD LVDS SINGAL 15 RO 2 P ODD LVDS SINGAL 16 GND GND 17 ROCLK ODD LVDS SINGAL 18 ROCLK ODD LVDS SINGAL 19 GND GND 20 RO 3 N ODD LVDS SINGAL 21 RO 3 P ODD LVDS SINGAL 22 NC NC 23 NC NC 24 GND GND 25 RE 0 P EVEN LVDS SINGAL 26 RE 0 N EVEN LVDS SINGAL...

Страница 13: ...Symbol Description 1 2 3 4 5 VBL 24V Power input 6 7 8 9 10 GND Ground 11 NC NC 12 BLON BL ON OFF 13 PWM Internal PWM Control 14 NC NC 4 INSTALLATION INSTRUCTIONS 4 1 External Equipment Connections Accessories Antenna Connection Generally speaking to enjoy a clearer picture we recommend that you use a CATV system or an outdoor antenna location and antenna positioning ...

Страница 14: ...V Choose Your Connection There are several ways to connect your television depending on the components you want to connect and the quality of the signal you want to achieve The following are examples of some different ways to connect your TV with different input sources VCR connection ...

Страница 15: ...ut jacks to the TV input jacks as shown in the figure When connecting the TV to VCR match the jack colors Video yellow Audio Left white and Audio Right red If you connect a S VIDEO output from VCR to the S VIDEO input the picture quality is improved compared to connecting a regular VCR to the Video input 2 Insert a video tape into the VCR and press PLAY on the VCR Refer to the VCR owner s manual 3...

Страница 16: ...s Play button on external equipment for program play 4 Refer to the DVD player s manual for operating instructions External Equipment Connections How to connect Connect the audio and video cables from the external equipment s output jacks to the TV input jacks as shown in the figure When connecting the TV to external equipment match the jack colors Video yellow Audio Left white and Audio Right red...

Страница 17: ...he digital set top box 2 Use INPUT on the remote control to select COMPONENT VGA or HDMI source Send the TV s audio to external audio equipment stereo system via the Digital Audio Output Optical port How to connect 1 Connect one end of an optical cable to the TV Digital Audio Optical Output port 2 Connect the other end of the optical cable to the digital audio optical input on the audio equipment ...

Страница 18: ...How touse 1 Turnon the computer a nd theTV 2 UseINPUT onthe remotecontrol toselect VGAor HDMIsource 3 Check the image on your TV There may be noise associated with the resolution vertical pattern contrast or brightness in VGAmode If noiseis present changethe VGAmode to anotherresolution change therefresh rate to another rate oradjust the brightnessand contrast onthe menu untilthe picture isclear I...

Страница 19: ...esolution appropriately To get the best picture quality adjust the output resolution of the source device to 1280x720p Select HDMI input source in input source option of Select Main source menu When the source device DVD player or Set Top Box supports DVI How To Connect 1 Connect the source device to HDMI port of this TV with a HDMI to DVI cable not supplied with this product 2 A separated audio c...

Страница 20: ...20 HDMI Cable not supplied with the product HDMI to DVI Cable not supplied with the product Analog Audio Cable Stereo to RCA type not supplied with the product ...

Страница 21: ...21 Power source Removing the table stand and installing a wall mount bracket ...

Страница 22: ...e as left right buttons 4 CH Press to scan through channels To scan quickly through channels press and hold down either In the MENU screen these buttons serve as up down buttons 5 POWER Press to turn on and off the TV 6 AV2 AUDIO IN Connect to hear stereo sound from an external device 7 HDMI3 IN Connect a signal from an external device to HDMI 8 AV2 VIDEO IN Connects the video signal from a video ...

Страница 23: ...nnect digital audio from an external device NOTE In standby mode these ports will not work 8 VIDEO Out Connect the second TV or monitor to the TV s AV OUT 9 AUDIO Out Connect the audio L R cables to the second TV s AV IN 10 VIDEO IN Connects the video signal from a video device 11 AUDIO IN Connect the audio L R cables from the Video signal source these jacks 12 S VIDEO IN Connect the S Video cable...

Страница 24: ...e the remote control to shock or liquids Do not use the remote control in an area with high humidity Do not place the remote control in direct sunlight Do not place objects such as furniture between the remote control and the remote sensor The remote control may not work if direct sunlight or bright light shines on the remote sensor Either move your TV or change the angle at which you use the remo...

Страница 25: ...r detaching the side A V board from the back cover by removing the 2 screws indicated by 2 Remove the Pedestal A Lay the unit down on its face B Remove the five screw indicated by the from the pedestal to detach it 3 Remove the speakers Each speaker is attached by 4 screws 4 Remove the Power Supply P C B 5 Remove the Remote Receiver P C B Remove the 4 screws indicated by the P C B is located at th...

Страница 26: ...ame subassembly Back cover subassembly Screen bracket subassembly Base subassembly LCD panel Power Supply P C B and Wire subassembly Components List NO Name Description Parts number 1 Bagging of owner s manual 2 Bagging of whole machine 3 TV Set 3 1 Base subassembly 3 2 Back cover subassembly 3 3 Armor Plate 3 3 1 Metals slice 3 3 2 Main Board 3 3 3 PSU 3 4 LCD PANEL 3 5 Front frame subassembly 26...

Страница 27: ...embly 12 27 NO Name Description Parts number 1 Base subassembly 2 Bolt GB9074 4 88 M4X12 NO Name Description Parts number 1 Back cover subassembly 2 1 Back cover assembly 2 2 Side av Bracket 2 3 Back jack label 2 4 Screw SJ2824 87 ST4X12F Black ...

Страница 28: ...28 6 4 Screen bracket subassembly Components List NO Name Description Parts number 1 Armor Plate 2 Metals slice 6 5 Front frame subassembly 1 2 3 2 1 2 2 4 ...

Страница 29: ...Connection Sketch Interpretat 6 6 1 Wire Photo 6 6 2 Components List NO Name Description Parts number 1 Power input connect wire TJC6 5P 500mm D187T 2 24v power wire TJC3 10 PH 4 50 3 LVDS wire 4 12Vǃ5V power wire FI RE51HL 600 A2006H00 2 16P 3 5 Remote control wire PH 5 500 PH 5 6 Key board wire PH 3 800mm PH 3 7 Speaker wire TJC3 4 300 400 SMP 2 SMP 2 8 Side AV wire PH 5 300 PH 5 9 18v Power wir...

Страница 30: ... 7 MEASUREMENTS AND ADJUSTMENTS The way to the factory mode menu 1st press the manu button 2en input 8893 Finished these operations system will be into the factory mode menu 1 Version Info 2 Video 3 Audio ...

Страница 31: ...31 4 Channel 5 Gamma 6 BackLight ...

Страница 32: ...32 7 Function ...

Страница 33: ...33 8 BLOCK DIAGRAM AND CIRCUIT DIAGRAM 8 1 BLOCK DIAGRAM 8 2 CIRCUIT DIAGRAM MTK5380 ...

Страница 34: ... 8 x 1 12K 2 2K 5 1V HDMI2 MT5380P1 V2 V1 C 1 15 Wednesday January 30 2008 INDEX MAIN POWER NUSTC_5380P1_V2_FOR HAIER Title Size Document Number Rev Date Sheet of No 1 2 Innovation Rd 1 SBIP Hsin Chu City 300 Drawn 3V3SB 5VSB 12V OPWRSB 5V OIRI OPCTRL3 ADIN2 ADIN1 LED_GRE OPCTRL3 ADIN1 ADIN2 GND LED_GRE LED_RED ADIN2_K1 ADIN1_K0 LED_CTL LED OPWRSB OIRI IR_IN ADIN2_K1 ADIN1_K0 ON OFF GPIO_3 12V 5V ...

Страница 35: ...96 DDR Termination SOP 8 SOP8 SMD 1 2 3 4 5 6 7 8 GND SD VSENSE VREF VDDQ AVIN PVIN VTT R519 100K R0603 SMD R2 2K R0603 SMD R1 110 R0603 SMD CB64 0 1uF C0603 SMD U11 LT1084 TO 252 3 TO 252 3 SMD 3 1 2 IN ADJ GND OUT R11 180 R0603 SMD C301 NC 100nF C0603 SMD U1 AZ1117 adj SOT223 SMD 1 2 3 0 ADJ GND OUT IN OUT CE33 470uF 16V C470UF16V D8H9 R5 750 R0603 SMD CB33 0 1uF C0603 SMD CB8 0 1uF C0603 SMD CE...

Страница 36: ...D 1 2 3 IN GND OUT CB32 0 1uF C0603 SMD CE96 220uF 16V C220UF10V D6 3H7 R14 180 R0603 SMD CB228 0 1uF C0603 SMD CB197 0 1uF C0603 SMD R19 0 R0603 SMD C575 1uF C0603 SMD CB229 0 1uF C0603 SMD CE19 470uF 16V C470UF16V D10H9 CE22 100uF 16V C100UF16V D6 3H7 C573 1uF C0603 SMD CE83 100uF 16V C100UF16V D6 3H7 CE30 100uF 16V C100UF16V D6 3H7 U7 AZ1117 adj SOT223 SMD 1 2 3 0 ADJ GND OUT IN OUT CE28 100uF ...

Страница 37: ...0K R0603 SMD R52 NS 100 R0603 SMD C21 5pF C0603 SMD R22 47K R0603 SMD R198 10K R0603 SMD R40 4 7K R0603 SMD C22 1uF C0603 SMD R27 1 R0603 SMD CB2 0 1uF H3 HOLE GND 2 3 4 5 9 8 7 6 1 2 3 4 5 9 8 7 6 1 FB17 FB BEAD SMD 0603 R42 10 Q1 2N3904 SOT23 SMD 1 3 2 R199 NS 10K R0603 SMD R25 1K R0603 SMD CB70 0 1uF C0603 SMD R21 220 R0603 SMD Y1 60MHz CRYS 49US P4 88 R18 0 R0603 SMD R30 33 R0603 SMD R44 470 R...

Страница 38: ...D or CVBS RF_AGC Mon NC or AFT NC or IF_AGC Mon NC or B2_Ana_ 5V TU_ 32V GND GND SCL SDA AS B_IF O P D_IF_AGC NC D_IF_O P_1 D_IF_O P_2 CB450 NS 100pF C0603 SMD C41 1uF C0603 SMD C42 0 01uF C0603 SMD C70 10nF C0603 SMD CE38 100uF 16V C100UF16V D6 3H7 R34 5 1K 1 R0603 SMD FB34 FB BEAD SMD 0805 R1159 220K R0603 SMD C75 10nF C0603 SMD QF1 2N7002LT1 SOT23 SMD 1 3 2 C57 4 7uF 10V C0805 SMD R1629 0 R0603...

Страница 39: ...3 4 5 6 7 8 CA20 0 1uF C0603 SMD CA5 0 1uF C0402 SMD RA8 75 R0603 SMD RNA4 47x4 RN0402 SMD 1 2 3 4 5 6 7 8 RA7 75 R0603 SMD RNA6 47x4 RN0402 SMD 1 2 3 4 5 6 7 8 RA14 100 R0603 SMD CA27 0 1uF C0603 SMD UA1 16M x 16 DDR TSOP 66 TSOP66 SMD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 5...

Страница 40: ...JTDI OIRI R1209 0 R0603 SMD R1257 NC 4 7K R0603 SMD R45 4 7K R0603 SMD R54 10K R0603 SMD R61 4 7K R0603 SMD U17 M25P16 NS CASON8 SMD 1 2 3 4 5 6 7 8 S_ Q W_ VPP VSS D C HOLD_ VCC R1703 100R R0603 SMD R1705 100R R0603 SMD R1227 NC 4 7K R0603 SMD CB452 0 1uF C0603 SMD CB52 0 1uF C0603 SMD R197 NC 10K R0603 SMD RN5 10K RN0603 SMD 1 2 3 4 5 6 7 8 CA36 4 7uF 10V C0805 SMD CA37 0 1uF C0603 SMD CB53 0 1u...

Страница 41: ... 16V R2084 0 C17 4 7uF 10v C0805 SMD D211 PESD1206Q 140 PESD1206Q 140 SMD 1 2 3 4 5 6 7 8 R2116 68R R2050 0 C720 100nF R2113 100K R2092 100 NC R2065 1K NS R2080 47K C725 100nF CN2 HDMI HAIER 20 21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 22 23 SHELL1 SHELL2 D2 D2 Shield D2 D1 D1 Shield D1 D0 D0 Shield D0 CK CK Shield CK CE Remote NC DDC CLK DDC DATA GND 5V HP DET SHELL3 SHELL4 R2081 100 NC ...

Страница 42: ...C FB R1206 SMD R2103 10K Q9 2N3904 SOT23 SMD 1 3 2 R2106 100 Q29 2N3904 SOT23 SMD 1 3 2 R2096 NS 0 R123 100K R0603 SMD L132 FB R1206 SMD U76 AP1530 SOP 8 SOP8 SMD 1 2 3 4 5 6 7 8 FB EN OCSET Vcc O P O P Vss Vss CE72 100uF 16V C100UF16V D6 3H7 R2105 100 R401 10K R0603 SMD FB12 NC R1206 SMD Q28 2N3904 SOT23 SMD 1 3 2 C85 1uF C0603 SMD R2102 10K R2072 4 3K R0603 SMD U13C MT5380 SMD LQFP LQFP256 SMD 5...

Страница 43: ... R0603 SMD CE648 10uF 10V R1206 C363 10nF C0603 SMD C353 15pF C0603 SMD R1640 75 R0603 SMD R1836 10K R0603 SMD R1636 68 R0603 SMD R1878 1K R0603 SMD C636 4 7uF 6 3V C0603 SMD R1842 10K R0603 SMD R36 22 R0603 SMD D157 NS EZJZ0V800AA ESD0603 SMD 1 2 R1831 75 R0603 SMD R1830 NC 0 R0603 SMD R153 20K R0603 SMD R1848 10K R0603 SMD D160 NS EZJZ0V800AA ESD0603 SMD 1 2 w red P76 RCA2X1 RCA2 HAIER 1 3 5 4 2...

Страница 44: ...03 SMD C134 5pF C0603 SMD FB68 80 100MHz BEAD SMD 0603 C135 10nF C0603 SMD D31 NS EZJZ0V800AA ESD0603 SMD 1 2 R169 68 R0603 SMD R160 0 R0603 SMD R181 0 R0603 SMD R171 75 R0603 SMD R182 10K R0603 SMD C137 5pF C0603 SMD R161 0 R0603 SMD FB69 80 100MHz BEAD SMD 0603 w red P82 RCA2X1 RCA2 HAIER 1 3 5 4 2 C136 10nF C0603 SMD D23 NS EZJZ0V800AA ESD0603 SMD 1 2 C141 5pF C0603 SMD R196 0 R0603 SMD R166 10...

Страница 45: ... 10K R0603 SMD R1592 100 R0603 SMD L34 0 L IND SMD 0603 C459 47pF C0603 SMD R1525 47 R0603 SMD R79 100 R0603 SMD D147 NS EZJZ0V800AA ESD0603 SMD 1 2 C111 NS 43pF C0603 SMD w red P80 RCA2X1 RCA2 HAIER 1 3 5 4 2 R1560 100 R0603 SMD C567 10nF C0603 SMD CB163 0 1uF C0603 SMD R1858 47 R0603 SMD R1882 1K R0603 SMD CB162 0 1uF C0603 SMD CE47 470uF 16V C470UF16V D10H9 C536 47pF C0603 SMD D197 NS EZJZ0V800...

Страница 46: ... ASPDIF 10 12V 1 3 9 10 14 15 OFF_MUTE 14 AOLRCK 7 AOBCK 7 GPIO_ 4 11 4 8 9 14 15 OPCTRL1 4 11 3V3SB 1 2 4 7 8 9 AR2 14 AL2 14 HPDET 14 AIN3_L 10 AIN3_R 10 5VSB 1 2 11 15 GND 1 2 3 4 5 6 7 8 9 10 11 12 14 15 A0SDATA0 9 AOMCLK 9 AV33 AV33 AV33 AV33 AV33 3V3SB CB171 0 1uF C0603 SMD U13G MT5380 SMD LQFP LQFP256 SMD 5380 179 178 177 176 175 174 173 172 171 183 181 182 180 203 200 201 202 198 188 187 1...

Страница 47: ...F 6 3V C0603 SMD CE21 220uF 16V C220UF16V D6H11 C659 4 7uF 6 3V C0603 SMD CE20 220uF 16v C220UF16V D6H11 R1800 10K R0603 SMD C40 1uF C0603 SMD C167 2 2nF R64 R1766 20K R0603 SMD CB981 0 1uF C0603 SMD R1767 20K R0603 SMD D16 NS 1N4148 1N4148 SMD C170 10uF 6 3V R1206 C702 4 7uF 6 3V C0603 SMD C660 4 7uF 6 3V C0603 SMD C35 1uF C0603 SMD R1867 20K R0603 SMD C585 1uF C0603 SMD R279 470 R0603 SMD R1616 ...

Страница 48: ...Ohm_2A R1206 SMD 1 2 R17724 7K R0603 SMD R1781 4 7K_DNS R0603 SMD C681 0 22uf C0603 SMD C665 0 22uf C0603 SMD R1785 470 R0603 SMD 1 2 R1773 39K R0603 SMD R1777 4 7K R0603 SMD CE630 47uF 16V C47UF16V D5H7 1 2 R1784 NC R0603 SMD 1 2 C671 1500P C0603 SMD D175 1N4148 1N4148 SMD C672 1uF C0603 SMD Q62 MMBT3904 SOT23 1 2 3 C664 0 1uF C0603 SMD C689 0 47uF 50V C DIP C687 0 1uF 50V C DIP R1782 NC R0603 SM...

Страница 49: ...9 WIRING CONNECTION DIAGRAM 49 0090403331 ...

Страница 50: ...50 10 TROUBLE SHOOTING GUIDE 10 1 Simple check 10 1 1 LCD is not bright 10 1 2 No picture ...

Страница 51: ...1 10 1 3 No sound Firstˈcheck cables which connect with PSUˈthen check as follows 1 Check input voltage as NO picture 2 Check speaker output 10 2 PSU failure check State No power First check cables which connect with PSU then check as follows 1 Check PSU input voltage AC input CON1 2 Check PSU output voltage orderly CON2 ...

Страница 52: ...ry line TCP H L D Horizontal line light or dark forever Block Defect TCP cracking or cracking Dim or L D TCP Sunken TCP lead cracking ACF bonding short Awful environment and something electric enter into LCD Mis align between TCP and Panel Panel failure TCP failure Failure Mode Part Name Description Phenomena Failure cause Panel or Polarlzer Dot Defect Bright dot dark dot in panel Incoming Inspect...

Страница 53: ...jointing bad 3 Panel and VSC connect bad Failure Mode Part Name Description Phenomena Failure cause White Screen B L normal only white screen display Black Screen B L normal only Black screen display Maybe caused by surge current and EDS FIIcker Crosstalk LCD Vcom imbalance Abnormal Color Only color abnormal Capacitance improper bring crosstalk inside LCD panel Circuit Abnormal Color Only color ab...

Страница 54: ...eration abnormal or systemic noise B L wire open Without backlight Operation abnormal or systemic noise B L shut down B L shutdown in sometime Short between lamp housing and wire Because consume power too much F M F M in B L white back Rotundity or wire like F M in B L unit Failure Mode Part Name Description Phenomena Failure cause Light leakage Brightness at bottom of LCM brighter than normal B L...

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