LG 42LB1DRA Support Question
LG 42LB1DRA Support Question
Find answers below for this question about LG 42LB1DRA - 42" LCD Integrated HDTV.Need a LG 42LB1DRA manual? We have 1 online manual for this item!
Question posted by alopez913 on October 19th, 2014
Image Doesn't Appear After Tv Is Started
After you put tv ON, display turns to a pink color during 5-10 seconds and then changes to black. No sound.
Current Answers
Related LG 42LB1DRA Manual Pages
Service Manual - Page 1
website:http://biz.LGservice.com e-mail:http://www.LGEservice.com/techsup.html
LCD TV SERVICE MANUAL
CHASSIS : LA61A
MODEL : 42LB1DR-UA / 42LB1DRA-UA
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Service Manual - Page 3
...ground (Water Pipe, Conduit, etc.) and the exposed metallic parts.
Place the AC switch in turn to the chassis the reading must be inadvertently introduced during the service operation. When the exposed ... has no return path to each exposed metallic part. Connect 1.5K/10watt resistor in this TV receiver is blown, replace it is essential that may be corrected before it with the same...
Service Manual - Page 6
...
10. Display
...10~90 % LCD Module
Remark
(ZE/TE) EU/Non-EU (PAL Market)
6),7) South America Market 7) Except South America NTSC Market (ME) PAL
FRANCE NTSC
JAPAN
42.02inch(42LB1R) PAL, 200 PR.(Option) NTSC
LPL
-6- RF Input Channel
4. Operating Environment
9. SPECIFICATION
NOTE : Specifications and others are subject to change without notice for improvement.
1.General Specification(TV...
Service Manual - Page 7
...
Specification
Remark
42" TFT WXGA LCD
H : 31 ~ 61Khz
PC Input
V : 56 ~ 75Hz
1) Contrast/Brightness
2) H-Position / V-Position
3) Tracking : Clock / Phase
4) Auto Configure
5) Reset
1 : Y
Middle east / NTSC Area
3 : Pb
5 : Pr
7 : Line1 Ready
9 : LINE2
11: LINE3
13: Line3 Ready
2 : Y GND
JAPAN Only
4 : Pb GND
6 : Pr GND
8 : LINE1
10:Line2 Ready
12:SWITCH GND
14: SWITCH...
Service Manual - Page 8
...00
45.00
60.00
7. 1280x720 8. 1920x1080 9. 1920x1080 10. 1920x1080
44.96 31.25 33.75 33.72
59... ME
HDTV 576p
TE, ME
HDTV 720p
TE, ME
HDTV 720p
TE, ME
HDTV 1080i 50Hz (AU Ver.) TE, ME
HDTV 1080i 60Hz (ATSC) TE, ME
HDTV 1080i ...-8- Typ.
Typ. Item
1 Viewing Angle 2 Luminance
3 Contrast Ratio
4 CIE Color Coordinates
R/L, U/D
Luminance(cd/ )
Variation
CR
CRD (With Al)
WHITE
Wx
...
Service Manual - Page 10
...
-
19
Video output (Composite)
20
Video input (Composite)
21
Common ground (Shield)
Signal Level 0.5 Vrms 0.5 Vrms 0.5 Vrms 0.5 Vrms 0.7 V High (9.5 - 12V) - AV Mode Mid (5 - 8V) -
Impedance < 1 > 10 < 1 > 10 -
> 10
-
-
-
75 75 - TV Mode -
0.7 V
0.7 V High (1 - 3V) - TV Mode -
-
-
1V including sync 1V including sync -
- 10 - 10. Composite 1V including sync 1V including sync -
Service Manual - Page 11
...state, Full White Pattern is displayed. (but you must be ...turn on a still screen more than 20 minutes (Especially Digital pattern(13 CH), Cross Hatch Pattern), an afterimage may occur in the black... level part of isolation transformer will help protect test equipment.
(2) Adjustments must be performed in the circumstance of
25±5°C of temperature and 65±10...TV, PA61A.
Service Manual - Page 12
... Device".
(3) When the "Select Device" window appears, select the PIC18F1220 from the screen.
5-2. Preparation for Adjustment
(1) Connect the MEMORY JIG and PC. (2) Turn on the JIG MAIN POWER SWITCH. (3) After turn on the Output window and the Download process is ended.
(8) The execution of process (6) is displayed on the PC and MONITOR, execute the...
Service Manual - Page 13
... window appears and select the Private key applied to run once, regardless of without VBI Inserter(TES3): VCR uses Cable input and set screen will begin.
6-3. Adjustment Confirmation Work
(1) Turn on ...and press Enter. (4) TV set as below .
[ Factory Test S/W must be repeated.
- 13 - The Private Key file name is rebooted and certificate Download work will appear as shown.
(5) Confrim...
Service Manual - Page 14
...Defective Not OK
CableCARDTM is removed. EDID(The Extended Display Identification Data)/DDC (Display Data Channel) Download
This is the function that the...50"
- 14 - 7.
Not OK(Unlock) Not OK(20dB under)
Black Screen (No Picture)
Each PCB Assy must be careful Power PCB Assy...Va
GND 5V
P805
P804
VR 95
Vs AD
Va AD
VR90
PDP TV SET (or Digital Board)
CN1
P800
1 P803
P802
1
1
...
Service Manual - Page 16
... Pattern: 32(100% color Bar), pressing the 'Rev' button and appear as below figure and ...adjust with automatic movement the Video Mode. Select '5.
Adjustment of White Balance
O Operate the Zero-calibration of the CA-210, then attach sensor to the TV AV Input terminal. Adjust' by pressing the right key (G ).
(3) When enter the adjustment mode, displayed the TV...
Service Manual - Page 17
...displayed on /off
2 POWER ON
To turn the TV on or off the teletext mode
9 TV/AV
To select an external input for the TV screen
10 TURBO SOUND To start turbo sound
11 TURBO PICTURE To start...will be displayed if it...select the multiple sound mode (Mono... sound ...natural color can be displayed.
28... that will be displayed if the current...turn the TV on automatically if the power is supplied to the TV...
Service Manual - Page 28
...TV/CATV mode does not display)
Replace th e TUNER(TU1302)
- 28 -
YES
Is it 33V #9 o utp ut ofTUNER(TU1302) ? YES
Is it 5V #12 ou tp ut of TUNER(TU1302) ? YES
Is n ormal #16 o utput of D/W MODE when you e xecution TV/TV...outp ut of D/ W MODE when you e xecution TV/DTV mo de ? Execu tion PIP or D/W mo de
TV
Is normal t he sub of TUNER(TU1302) ?
• DCR RF MODE(Detailed)
...
Service Manual - Page 29
...Power(1.5V,3.3V)
Is nora ml out put of D/ W MODE? Digita l Output Y(10bit),C(10bit),H/V,FID Is it 9V #42 of D/W MODE? Is n ormal #44 o utput of CXA2069(IC101)? • DCR DVR RF MODE
1. Is n ...oramlly co nnected P101 to P1612 ? FIG1
FIG1 FIG2
(TV/CATV mode does not display)
Is no rmal the su b of CXA2069(IC101) ? Is it 9V #42 of UPD64015(IC701)? Is n ormal o utpu of FMS6400(...
Service Manual - Page 32
... (abo ve)
6 : _Check CY2309 (IC203) REF(#1), CLKA4(#15) _Sig nal sh ape is norm al & No Sound ?
Y Re-do wnloa d EDID(IC605,IC606)
N
3
Check M ST3361(IC603) inpu ts
Power, Os c
#...HD)
Y
6
Check C Y2309 (IC203) REF(#1), CLKA4(#15)
1 : _Check HDCP Error _Retr y po wer off and on (TV or STB/DVD...)
N
Check HDCP Power Pin (IC604), MST3361(IC603) IIC(#69,#70)
2
Vid eo is same (abo ve)...
Service Manual - Page 37
download PIC18F1220(IC1103 ) Normal? YES
Re- YES
Check CPL D LED and Redownload
- 37 - download
No Video ? NO
Replace PIC18F1220 ( IC1103 ) and Re- • Power On-Off repetition(Automatically)
Symptom : TV set po wers on ( LED :White ) and off ( LED :R ed ) repeatedl y of its elf. ( No video )
Check X1100 (10MHz) Normal?
Service Manual - Page 38
...es and GND sh ort? NO
Replace A/V boa rd or digital bo ard
Replace p ower board Norm al?
• Protect Mode
Symptom : When TV set powers on, LED i s blin ki ng in secon ds.
NO
Check A/V bo ard Mic om
NO Check A/V bo ard Mic om NO
...(P1604 #1) is 5V HIGH?
And po wer off(LED is red)
Check Fa ns Fan(P1606), upper /sid e ( 50" : 1EA, 42" : No FAN )
Fan op erate norm ally ?
Service Manual - Page 39
... this by cable operators and inserted into place. If the second CableCARD fails to the diagnostic menus on the DCR for the DCR TV. Pairiong option, press ENTER Use cursor to select Network Setup.... (The DCR must not receive RF signal via a STB or accessory RF modulator.) This will display all non- c. Below table describes how to select SA CableCARD CP Screen option, press ENTER Many...
Service Manual - Page 40
...if the HOST is still not displayed, installer should start by contacting the CE manufacturer ... correct, and has confirmed normal channel map with a or more other DCR TVs at the customer's home. pod pairing screen cannot be paired to the dispatcher... technician is normal range. The CableCARD must be displayed with the CE manufacturer.
10. usually involving either item 2a or 3b above ...
Service Manual - Page 43
- 43 -
• TV RF NO Sound
NT Tun er AT/NT Tuner
SIF SIF
Main Audi o Process or
(MSP4450K)
L/R
Buffer (MC33078)
I2S
ADC (CS5331A)
I2S
PWM Modulator (NSP2100A)
AMP (TAS5122)
Front Speaker Monitor Out
I2S
HD-2
SPDIF
System CPLD (EPM570T144)
SPDIF Out (Optical )
LG Knowledge Base Results
We have determined that the information below may contain an answer to this question. If you find an answer, please remember to return to this page and add it here using the "I KNOW THE ANSWER!" button above. It's that easy to earn points!-
HDTV-Gaming-Lag - LG Consumer Knowledge Base
... articles / TV HDTV-Gaming-Lag Quick Solution: Ensure sound settings on console are set to nail down from interlaced (the 'i' in hand and ask to plug them on -screen reaction noticeably later. Not all possible, if you 're new to the issue, we 've read a number of reports of laggy LCDs and plasma displays as... -
HDTV: How can I use the television as a PC monitor? - LG Consumer Knowledge Base
... recommended only after the initial setup is a good starting point. If you may require changing settings or toggling between the on any adjustments to a mode that will support. HDTV: How can I receive an "Invalid Format" message? In most cases, newer high definition televisions can be displayed by the television. Select the [settings] tab and adjust the... -
LG Room / Window AC General FAQ - LG Consumer Knowledge Base
... window? 19. NOTE: Simply changing the wall outlet to confirm that... capacity will cause the unit to appear to start cooling the room. 08. If this...than a dedicated dehumidifier. This foam is turned on my air conditioner? 21. Why is...again to make hissing and gurgling sounds? 10. Allow the filter to operate... the machine. However, as an integral part of the air conditioner's cabinet...
Similar Questions
Power On.
I have a 42LB1DRA. I turn it on and then it shuts back off about 30 seconds after. Won't stay on.
I have a 42LB1DRA. I turn it on and then it shuts back off about 30 seconds after. Won't stay on.
(Posted by jasonjarel 5 years ago)
I Have No Picture Or Sound
i just received a 42 lg tv and all of a sudden i have no picture or sound. What should i do
i just received a 42 lg tv and all of a sudden i have no picture or sound. What should i do
(Posted by robbinst2510 8 years ago)
My Lg 42'' Flat Screen Tv Wont Turn On, I Think It Got Hit With A Jolt Of Lighte
(Posted by coachpack90 11 years ago)
Lg Smart Tv 55lw9500 Turns On And Off By Itself
I have an LG Smart TV 55LW9500 that keeps turning off and on by itself, can you please advise why th...
I have an LG Smart TV 55LW9500 that keeps turning off and on by itself, can you please advise why th...
(Posted by garlito5 12 years ago)