Thursday, 14 September 2017

Changhong 21NF55-21PF93 CRT TV – How to adjust the convergence, setup adjustments, circuit diagram (schematic)

SET-UP ADJUSTMENTS
The following adjustments should be made when a complete realignment is required or a new picture tube is installed.
Perform the adjustments in the following order:
1. Color purity
2. Convergence
3. White balance
The purity/convergence magnet assembly and rubber wedges need mechanical positioning.
For some picture tubes, purity/ convergence adjustments are not required.
Color Purity Adjustment
Preparation:
Before starting this adjustment, adjust the vertical sync, horizontal sync, vertical amplitude and focus.
1 Face the TV set north or south.
2 Connect the power plug into the wall outlet and turn on the main power switch of the TV set.
3 Operate the TV for at least 15 minutes.
4 Degauss the TV set using a specific degaussing coil.
5 Set the brightness and contrast to maximum.
6 Counter clockwise rotate the R/B low brightness potentiometers to the end and rotate the green low brightness potentiometer to center.
7 Receive green raster pattern signals.
8 Loosen the clamp screw holding the deflection yoke assembly and slide it forward or backward to display a vertical green zone on the screen. Rotate and spread the tabs of the purity magnet around the neck of the CRT until the green zone is located vertically at the center of the screen.
9 Slowly move the deflection yoke assembly forward or backward until a uniform green screen is obtained.
10Tighten the clamp screw of the assembly temporarily. Check purity o f the red raster and blue raster until purities of the three rasters meet the requirement.
Convergence Adjustment
Preparation:
Before attempting any convergence adjustment, the TV should be operated for at least 15 minutes.
1 Center convergence adjustment
1.1 Receive dot pattern.
1.2 Adjust the brightness/contrast controls to obtain a sharp picture.
1.3 Adjust two tabs of the 4-pole magnet to change the angle between them and red and blue vertical lines are superimposed each other on the center of the screen.
1.4 Turn both tabs at the same time keeping the angle constant to superimpose red and blue horizontal on the center of the screen.
1.5 Adjust two tabs of the 6-pole magnet to superimpose red/blue line and green line.
1.6 Remember red and blue movement. Repeat steps2.1.3-2..1.5 until optimal convergence is obtained.
2 Circumference convergence adjustment
2.1 Loosen the clamp screw holding the deflection yoke assembly and allow it tilting.
2.2 Temporarily put the first wedge between the picture tube and deflection yoke assembly. Move front of the deflection yoke up or down to obtain better convergence in circumference. Push the mounted wedge in to fix the yoke temporarily.
2.3 Put the second wedge into bottom.
2.4 Move front of the deflection yoke to the left or right to obtain better convergence in circumference.
2.5 Fix the deflection yoke position and put the third wedge in either upper space. Fasten the deflection yoke assembly on the picture tube.
2.6 Detach the temporarily mounted wedge and put it in either upper space. Fasten the deflection yoke assembly on the picture tube.
2.7 After fastening the three wedges, recheck overall convergence and ensure to get optimal convergence. Tighten the lamp screw holding the deflection yoke assembly.
White Balance Adjustment
Generally, white balance adjustment is made with professional equipment. It’s not practical to get good white balance only through manual adjustment. For TVs with I2C bus control, change the bus data to adjust white balance.
Schematic - Full
CIRCUIT ADJUSTMENT S
Preparation:
Circuit adjustments should be made only after completion of set-up adjustments.
Circuit adjustments can be performed using the adjustable components inside the TV set. For TVs with I2C bus control, first change the bus data.
1. Degaussing
A degaussing coil is built inside he TV set. Each time the TV is powered on, the degaussing coil will automatically degauss the TV. If the TV is magnetized by external strong magnetic field, causing color spot on the screen, use a specific degausser to demagnetize the TV in the following ways. Otherwise, color distortion will be shown on the screen.
1.1 Power on the TV set and operate it for at least 15 minutes.
1.2 Receive red full-field pattern.
1.3 Power on the specific degausser and face it to the TV screen.
1.4 Turn on the degausser. Slowly move it around the screen and slowly take it away from the TV.
1.5 Repeat the above steps until the TV is degaussed completely.
2. Supply Voltage Adjustment
Caution: +B voltage has close relation to high voltage. To prevent X-ray radiation, set +B voltage to the rated voltage.
2.1 Make sure that the supply voltage is within the range of the rated value.
2.2 Connect a digital voltmeter to the +B voltage output terminal of the TV set. Power on the TV and set the brightness and sub -brightness to minimum.
2.3 Regulate voltage adjustment components on the power PCB to make the voltmeter read 115±1V.
3. High Voltage Inspection
Measure voltages of test points on the main PCB with the digital voltmeter. Measure the CRT high voltage with the high-voltage testing equipment and heater voltage with the high-frequency effective voltmeter.
[Anode high voltage differs depending on CRTs used, which should be decided by engineers.]
Focus Adjustment
Caution: Dangerously high voltages are present inside the TV. Extreme caution should be exercised when working on the TV with the back removed.
1 After removing the back cover, look for the FBT on the main PCB. There should be a FCB on the FBT.
2 Power on the TV and preheat it for 15 min.
3 Receive a normal TV signal. Rotate knob of the FCB until you get a sharp picture.
5. Safety Inspection
1 Inspection for insulation and voltage-resistant
Perform safety test for all naked metal of the TV. Supply high voltage of 3000V AC, 50Hz (limit current of 10mA) between all naked metal and cold ground. Test every point for 3 min. and ensure no arcing and sparking.
2 Requirements for insulation resistance
Measure resistance between naked metal of the TV and feed end of the power cord to be infinity with a DC-500 high resistance meter and insulation resistance between the naked metal and degaussing coil to be over 20M
Ω .
6. DESIGN/SERVICE mode
1 To enter the USER SERVICE mode
Caution: The user service mode adjustment can be changed only when service personnel adjust the whole set data during servicing. As the control data have dramatic effects on functions and performance of the TV, service personnel should not tell user how to enter the SERVICE mode to avoid improper data settings.
1.1 Set the volume to 0. Then press and hold the MUTE button on the remote control, and press the MENU button on the TV to enter the SERVICE mode. (In this case, the S mode cannot be stored in the EEPROM. To exit from the S mode, turn off the TV set. )
1.2 After entering the S mode, Red
Sis displayed on the upper center of the screen and MENU1 is default. Use the POS+/- buttons to highlight an adjustment and the VOL+/- buttons to adjust it. The adjusted data are immediately output and stored in the EEPROM
Option set
With remote control system software TDA935X,all options can be set in the SERVICE mode and stored in EEPROM. Data related to picture, sound and geometric adjustment are also stored in EEPROM.

Philips universal remote control – Philips SRC2063 – Programming procedure - 4 Digit Code list

HOW TO PROGRAM THE REMOTE  
1. Switch ON the TV manually or use the original remote control for this. Tune to channel 1.
2. Press and hold the TV device selection button for 5 seconds until the red Setup light blinks.The remote control is now in setup mode
3. Look up the 4-digit code for your brand in the brand list at the back of this user manual.
A 4-digit code is shown for each brand. Use the digit buttons to enter the code for your brand.
# If the red Setup light turns off, an invalid code was entered. In this case, try again.
4. Aim the remote control at the TV. Press and hold the POWER button. Release it immediately as soon as the TV switches off.
# This step normally takes between 5 and 60 seconds. In extreme circumstances this step can take up to 15 minutes.
5. Switch ON the TV. Try out the buttons that you need for operating it.
Try, for example, if the - CH + and digit buttons function properly.
# If a button does not work as expected, press and hold that button. Release it immediately as soon as it works.
6. Press the device selection button twice to finish setup.
# When no button is pressed for 5 minutes or more, the remote control will exit setup mode, automatically saving all your settings.
CODE SEARCH 
If the device does not respond at all or not to all of the button commands or if you cannot find the code for your brand, enter ‘9, 9, 9, 9’ in step and continue with step 4. The remote control will now search its full database for a code that works with your TV. Full database search may take up to 15 minutes.
CODE LIST FOR TELEVISION 
A
A R  Systems 0012
ABC 0013
Abex 0014
ABS  0016
Accele Vision4194
Access HD 3554
Accurian 0022
Acer  0028
Acura 0036
ADC   0040
Addison 0043
Adelphia 4195
Admiral 0046
Advent  0054
Adventura 0055
Adyson 0058
Agashi 0063
Agazi 3522
AGB 0064
Aiko  0069
Aim  0070
Aiwa 0072
Akai 0074
Akiba 0078
Akira 0079
Akito 0082
Akura 0083
Alaron 0085
Alba    0086
Albatron 0087
Alco       0092
Alienware 0099
Allegro  0103
Alleron  0104
Allorgan  0105
Allstar    0108
Alpha Digital 4014
AlphaStar 0113
Alpine  0114
America Action 0123
American High 0125
Americast  0127
Amphion Media Works 0135
Amplivision 0138
Ampro  0139
Amstrad 0140
AMTC  4015 
Amtron  0141
AMW   0143
Anam 0146
Anam National 0147
Anglo  0151
Anitech 0154
Ansonic 0156
Antronix  0159
AOC     0165
Aolinpiya  4089 
Apache   0169
Apex     3691
Apex Digital 0170
Apple  0172
Arcam 0179
Archer  0180
Archos 0181
Ardem  0184
Aristona 0192
Arrgo   0197
Arris  4931 
Artec  4016
Asberg 0205
Asha  0209
Aspire 4233
Astar  0218
Asuka 0227
AT&T 3453
Atlantic 0233
Atori    0237
Audio Dynamics 0248
Audiosonic 0264
Audioton  0266
Audiovox  0268
Autovox  0280
Aventura  0287
Awa 0296
Axion 0299
B
Baihua 4092 
Baird    0311
Bang & Olufsen 0314
Baohuashi 0316 
Basic Line 0325
Bastide 0327
Baur 0331
Bazin 0335
BBT  0338
Beaumark  0340
Beijing 0345
Beko  0346
Belcor 0348
BELL  4376 
Bell & Howell 0350
Bell ExpressVu 0352 
Bell South 0353
BenQ 0359
Beon 0361
Best 0364
Bestar 0368
BestarDaewoo  0369
Binatone 0378
Black Star 0386
Blacktron 3526
Blackway 0388
Blaupunkt 0390
Blue Parade  0394
Blue Sky 0395
Blue Star 0396
Bondstec 0403
Boots 0405
BOSS 4197
BPL 0413
Bradford 0414
Brandt 0416
Brillian 0422
Brinkmann 0423
Brionvega 0424
Britannia 0425
Brockwood 0430
Broksonic 0432
BskyB 0436
BTC 0439
Bush 0445
Byd:sign  0448
C
Cable Star 0454
Cabletenna 0456
Cableview 0458
Cablevision 4238
Caihong 0462
Caixing  4093 
California Audio Labs 0467
Calix 0468
Candle 0480
Canon 0481
Capsonic 0486 
Captive Works 0487
Carad 0488
Carena 0489
Carnivale 0491
Carrefour 0492
Carver 0494
Cascade 0496
Casio 0499
Catha 4094
Cathay 0501
CCE  0504
Celebrity 0509
Celera 0510
Centurion 0520
Century 0521
CGE 0523
Changcheng 0526
Changfei 0527
Changfeng 0528 
Changhai 0529
Changhong 0530
Channel Master 0531
Chaparral 0533
Ching Tai 0541
Chun Yun 0545
Chunfeng 0546
Chung Hsin 0547
Chunlan 4097 
Chunsun 0549
Cimline 0552
CineVision 0562
Citizen 0567
City  0569
Clarion 0575
Clarivox 0576
Clatronic 0581
Clearmaster 0583
ClearMax 0584
CMS 0590
CMS Hightec 0591
Coby 0597
Colortyme 0601
Colour Voice 0602
Colt 0603
Comcast 3456
Commercial
Solutions 0615
Comtronics 0623
Concerto 0625
Concorde 0626
Condor 0627
Conrowa 0634
Contec   0635
Contec/Cony4199
Coolmax 0642
Coolsat  0643
Coship   0646
Cosmel 0647
COX  4200
Craig  0650
Crosley 0655
Crossdigital 0656
Crown 0658
CS Electronics 0663
CTC 0664
CTX 0665
Curtis Mathes 0667
CXC   0670
CyberHome 0672
Cybernex 0673
CyberPower 0674
Cybertron 0675
Cytron 0680
D
Daeryung 0691
Daewoo  0692
Danichi 3914
Dansai 0699
Dantax  0702
Davidson 4202
Dawa 0707
Daytron 0710
DBX  0712
Decca  0718
Deitron  0722
Dell   0725
Denon  0731
Denver  0733
Desay  0737
Desmet  0738
Diamant   0746
Diamond 0747
Diamond Vision 0748
Digatron 0751
Digi  0754
Digiline 0759
Digital Stream 3809
Dimensia 3569
Director  0793
DirecTV 0794
Dish Network
System 0799
Dishpro 0800
Disney 0803
Dixi   0807
Dongda 0820
Donghai 0821
Drake 0825
Drean 0832
DSE 0833
DTS  0837
Dual 0838
DualTec 3528
Dumont 0840
Durabrand 0842
Dux 0843
DVD2000 0844
DVision 0684
Dwin 0848
Dynatech 0854
Dynatron 0855
Dynex  3476
E
Eastern 0859
ECHOSPHERE 4396 
Echostar 0866
Eclipse 0867
Eiki 0874
Elbe 0880
ElbeSharp  3529
Elcit  0883
Electroband  0888
Electrograph  0889
Electrohome 0890
Electrophonic 0893
Elektra  0896
Element 3477
ELG 0900
Elin 0902
Elite 0903
Elmak 0907 
Elta 0910
Emerson 0917
Emperor 0921
Emprex 0922
Enterprise 0931
Envision 0933
Epson 0937
Erres 0942
ESA 0943
ESC 0945
Ether 0948
Etron 0949
Eurofeel 0954
EuroLine 0955 
Euroman 0956
Europa 0957
Europhon 0959
Everquest 0971
Expressvu 0977
Exquisit 0978
F
Fagor Life 4102
Feilang 0990
Feilu  0991
Feiyan 0992 
Feiyue  0993
Fenmenti 4103
Fenner 0994
Ferguson  0996
Fidelity 0998
Filsai 1000
Finlandia 1003
Finlux 1004
Firstar 1007
Firstline 1008
Fisher 1009
Flint 1014
FNR 1016
Focus 1017
Formenti 1023
FormentiPhoenix 1024
Fraba 1030
Friac 1040
Frontech 1042
Fuji 1047
Fujitsu 1052
Fujitsu General 1053
Funai 1056
Furi 1057
FUTEC 3960 
Futuretech 1064
G
Galaxi 1068
Galaxis 1069
Garrard 1075
Gateway 1076
GBC 1078
GC Electronics 1080
GE   1081
GEC 1083
Gehua 1086
Geloso  1087
Gemini 1089
General Instrument 1093
General Technic 1095
Genexxa 1097
GFM 3820
Giant  1113
Gibralter 1114
Go Video 1126
GOI 1130
GoldHand 1136
Goldline 1138
GoldStar 1140
Goodmans 1142
Goodmind 1143
GPM  1149
Gradiente 1151
Graetz 1152
Granada 1154
Grandin 1156
Greenhill 1157
Gronic  1160
Grundig 1162
Grunpy  1165
H
Haier  1175
Haihong 1176
Haiyan 1177 
Halifax  1179
Hallmark 1180
Hamlin 1182
Hampton 1183
Hankook 1188
Hanseatic 1190
Hantarex   1192
Hantor 1193
Harley Davidson  1197
Harman/Kardon  1198
Harvard 1202
Harwood 1204
Hauppauge 1206
Havermy 1208
HCM 1210
Headquarter 1214
Hello Kitty 1221
Hema 1222
Hemmermann 1223
Hewlett Packard  1229
Higashi 1234
Highline 1236
Hikona  1237
HiLine 3533
Hinari 1243
Hisawa 1247
Hisense 1249
Hitachi 1251
Hitachi Fujian 1252
Hiteker 1255
Hitsu 1257
Hoeher 1262
Hongmei 1272
Hongyan 1274 
Hornyphon 1277
Hoshai 1278
Howard Computers 1281
HP  1283
HTS 1285
Huafa 1287
Huanghaimei 1288
Huanghe  1289
Huanglong 1290
Huangshan 1291
Huanyu  1292
Huaqiang 1293 
Huari  1294
Hughes  4205
Hughes Network
Systems  1296
Humax  1298
Hush  1304
Hygashi 1308
Hyper 1309
Hypson 1312
Hytex  1314
Hyundai 1315
I
Iberia 1320
iBUYPOWER 1322
ICE  1324
ICeS 1325
Illico 4206
iLo  1341
iLuv 4234
Ima  1342
Imperial 1346
Imperial Crown 1347 
Indiana 1350
Infinity 1352
InFocus 1353
Ingelen  1354
Ingersol 1355
Initial 1356
Inno Hit 1358
Innova 1359
Innovation 1360
Insignia 1368
Instant Replay 3580
Integra 1370
Inteq  1373
Interbuy 1376
Interfunk 1377
Internal 1379
International 1380
Intervision 1386
IR 4110
Irradio 1396
Isukai 1402
iSymphony 3755
ITC 1404
ITS 1405
ITT 1406
ITV  1408
J
Janeil 1414
Jasco 1415
JBL 1420
JC Penney 4208
JCB 1421
JCL 4209
Jean  1424
Jensen 1429
Jerrold 1431
Jiahua 1435 
JiaLiCai 1436 
Jinque 1440 
Jinta 1441 
Jinxing 1442
Juhua 1461 
JVC  1464
jWin 1465
K
Kaige  1470
Kaisui 1471
Kamp 1475
Kanghua 1477
Kangli 1478 
Kangyi 1479 
Karcher 1484
Kawa  1487
Kawasaki  1488
Kawasho 1489
Kaypani 1490
KEC 1496
Kendo 1500
Kenwood 1507
KIC 1512
Kingsley 1520
Kioto  1523
Kiton 1525
KLH 1529
Kloss Novabeam 4210
Kneissel 1535
Kodak 1540
Kolin 1541
Kolster 1543
Kongque 1545 
Konig 1547
Konka 1548
Korpel 1552
Korting 1554
Kosmos 1557
Koss 1558
KTV   1572
Kuaile 1573 
Kunlun  1578 
Kyoshu  1583
Kyoto  1585
L
L&S Electronic 1588
Landel1593
Lasonic 1600
Layco     4117
Lecson 1606
Lenco  1615
Lenoir 1617
Lenoxx 1618
Lesa  1622
Lexicon 1625
Leyco 1627
LG 1628
LG/Goldstar  3536 
Liesenk   3537 
Liesenk & Tter  1630
Liesenkotter  1631
Life   3538 (DB1)
Lifetec  1633
Linksys 1640
Linsay  1642
Liquid Video 1644
LiteOn  1645
Lloyd’s 1648
Local India TV  1653
Loewe   1660
Loewe Opta 3540
Logik 1661
Longjiang 1664 
Luma  1674
Lumatron 1676
Lux May  1680
Luxman 1682
Luxor 1683
LXI 1686
M
M & S 1687
Madison 1698
Magnadyne 1702
Magnafon 1703
Magnasonic 1704
Magnavox 1706
Magnin  1708
Magnum  1709
Majestic  1713
Mandor 1717 
Manesth 1718
Manhattan 1719
Marantz 1724
Mark 1731
Marta  1735
Masuda 1744
Matsui   1750
Matsushita 1751
Maxent   1757
Media Center PC 1777
Mediator 1784
Medion 1787
Medison  1788
MegaCable 4211
Megapower  1791
Megatron 1795
MEI 1796
Meile  1797 
MeiShi  4118 
Melectronic 3654
Memorex 1800
Memphis 1802
Mercury 1804
Metz 1810
MGA   1811
MGN Technology 1812
MicroGEM 4024
Micromaxx 1822
Microsoft  1826
Microstar 1827 
Midland  1831
Minato 1835
Mind   1837
Minerva 1838
Minoka 1840
Minolta 1841
Mintek 1845
Minutz   1847
Mitsubishi 1855
Mivar 1857
MoDeng 4120 
Monivision 1872
Montgomery Ward 4212
Morgans 3970
Motorola 1878
Movie Time 1880
MTC 1889
MTlogic 1892
Mudan 1896 
Multistandard  1904
Multisystem 4121 
Multitec  1906
Multitech  1907
MultiVision 1909
Murphy 1911
Musikland 1915
N
NAD 1926
Naiko 1930
Nakamichi 1932
Nakimura 1933
Nanbao 1934 
Nansheng  1935 
National Panasonic  4661
NEC  1950
Neckermann 1951
NEI 1952
Nesa 1959
Nesco 1960
Net Brazil  1962
Netsat 1966
NetTV  1967
Neufunk  1970
New Tech  1979
New World 1980
Newave 1981
Next Base 1983
Next Level 1984
Nexus 1989
NexxTech 1990
Nicamagic 1994
Nikkai  1998
Nikko 2000
Niveus Media  2012
Noblex  2013
Nobliko 2014
Norcent 2020
Nordic   2021
Nordmende 2022
Nordvision 3543 
Normerel 2024
Northgate 2027
Noshi 2030
Nova Vision 2032
Novaplex 2034
Novatronic  2035
NSC 2042
NTC 2045
O
Oak 2059
Okana  4122
Okano 2065
Olevia 2067
Olympus 2071
Onimax 2082
Onkyo  2085
Onwa 2087
Opera 2090
Oppo   2092
Optimus  2095
Optoma  2097
Optonica  2099
Orbit 2103
Orion   2111
Oritron  2112
Orline 2113
Ormond  2114 
Orsowe  2116
Osaki 2118
Osio  2121
Oso   2122
Osume  2123
Otto Versand 2126
P
Pace  2134
Pacific  2135
Pael   2140
Palladium  2145
Palsonic 2147
Panama  2149
Panasonic  2153
Panavision  2154
Panda 2155
Pansat 2158
Panther   2160
Paragon 2161
Pathe Cinema   2168
Pausa   2171
Paysat 2173
PCT  4213
Penney 2182
Pentax  2183
Perdio  2185
Perfekt  2186
Philco  2192
Philharmonic 2194
Philips   2195
Philips Magnavox  3715
Phoenix 2199
Phonola 2201
Phonotrend   2202
Pilot   2207
Pioneer 2212
Pionier   2213
Plantron  2219
Plasmsync 4230
Playsonic  2224
Polaroid   2230
Polk Audio  2232
Poppy   2236
Popular Mechanics 2237
Portland 2238
Powerpoint 2241
Prandoni Prince 4125
Precision  2244
Prelude   2247
Priceclub 2252
Prima   2253
Primestar  2257
Princeton  2258
Prinz  2260
Prism  2261
Proceed  2267
Profekt 4126
Profex 2269
Profilo 2272
Profitronic  2273
Proline 2274
Proscan   2279
Prosonic 2282
Protech   2284
Proton 2288
Protron  2289
Proview 2290
ProVision 2291
Pulsar 2296
Pye  2302
Pymi  2304
Q
Qingdao  2308 
Quarter 2318
Quartz  2319
Quasar  2320
Quelle   2322
Questa   2324
Qwestar   2326
R
Radialva  2329
Radio 4128
Radio Shack/Realistic 4214
Radiola 2330
Radiomarelli  2331
RadioShack 2333
Radiotone 2334
Radix   2335
Randex  2343
RCA  2351
Realistic   2354
Recor   2359
Recoton   2361
Rectiligne 2362
Redstar  2366
Reflex  2368
Regal   2370
Regency  2371
Regent  2372
Rembrandt 2375
Reoc   2379
ReplayTV  2380
Revox 2383
Rex  2385
RFT   2386
Rhapsody   2387
Ricavision 2388
Rio  2393
RLine   2327
Roadstar 2398
Rogers 4215
Rotel   2414
Rowa  2416
Runco  2423
S
Saba  2429
SageTV 4981 
Saisho 2437
Saivod  2439
Salora   2443
Sambers  2445
Sampo  2446
Samsung 2448
Sandra   2454
Sanjian   2455 
Sanky  2456
Sansui  2458
Sanyo  2462
Sanyuan  2464
SBR   2492
Sceptre   2498
Schaub Lorenz  2500
Schneider   2501
Scientific Atlanta  2503
Scimitsu 2505
Scotch  2506
Scott  2508
Sears 2514
SEG   2522
SEI  2524
SeiSinudyne  2525
Seleco  2528
Sencora  2531
Sensory Science 2533
Sentra   2534
Serino   2539
Shancha   2546 
Shanghai  2547
Shaofeng   2549
Sharp  2550
Sharper Image 2551
Shen Ying 2552
Shencai  2553
Sheng Chai 3922
Shenyang  2555
Sherwood 2557
Shinco   2560
Shinsonic  2562
Shintoshi 2564
Shivaki   2567
Shogun  2568
Siam  2572
Siarem 2573
Siemens 2574
Siera  2576
Sierra   3549 
Sigma Designs 2579
Signal  2581
Signature 2582
Silva  2591
Silva Schneider   2592
Silver 2594
Simpson  2598
Sindyne 4510
Singer   2599
Sinudyne 2601 
SKY   2610
Skygiant  2618
Skyworth  2631 
SL Marx 2633
Sogera 2649
Solavox  2654
Sonawa  2663
Sonic Blue 2667
Sonicview 3954
Soniko  2669
Sonitron 2671
Sonneclair 2673
Sonoko  2675
Sontec 2677
Sony  2679
Sound & Vision 2680
Soundesign 2684
Soundwave 2689
Sowa  2691
Squareview 2703
Srypton  4138
SSS   2708
Stack  4218
Standard  2713
Standard Components 2714
Star Choice 2716
Starcom 2722
Stargate 2723
Starlite   2728
Starquest  2732
StarSight  2734
Stenway 2739
Strato  2745
STS  2749
STS1  4219
STS2 4220
STS3   4221
STS4   4222
Studio Experience   2750
Stylandia 2752
Sungale   2761
Sunkai  2762
Sunstar   2768
Sunwood   2772
Supercable  2778
Superla  2782
Supermax 2783
Superscan 2786
SuperTech  2789
Supervision 2791
Supra   2792
SupreMacy 2794
Supreme   2795
Sutron 2798
SVA    2800
Sydney  2808
Sylvania  2809
Symphonic 2810
Synco  2811
Syntax  2814
SyntaxBrillian 4231
Sysline  2815
Systemax  2817
Sytong 2820
T
Tacico  2823
Tagar Systems  2831
Tai Wah  4139 
Taishan 2835
Tandy  2843
Tashiko  2850
Tatung 2852
TCL  2856 
TCM   2857 
Teac  2860
Teachimagen 4140
Tec   2861
Tech Line  2863
Technema 2866
Technica 2868
Technics 2869
Technika  2870
Techview 2883
Techwood 2884
Teco 2886
Tedelex  2889
Teknika   2895
TeleCaption 2902
Telecor 2910
Telefunken 2914
Telefusion  2915
Telegazi   2917
Telemeister 2924
Telesonic  2930
Telestar 2931
Teletech  2934
Teleton 2935
Televideon 2938
Teleview 2939
Tennessee 2952
Tensai   2954
Tenson 2955
Terapin 2958
Tevion  2962
Texet    2963
Texscan  2965
TFC   2967
Theta Digital 2970
Thomas  2971
Thomson 2972
Thorn   2974
ThornFerguson 2976 
Time Warner 3518
Timeless 2985
Tivax   3956
Tivo   2991
TMK  2994
TNCi  2996
Tobo 2999 
Tocom 3000
Tokai  3001
Tokyo  3004
Tomashi 3006
Tongguang 3008 
Torx  3020
Toshiba   3021
Totevision 3024
Touch  3025
Towada   3028
Toyoda  3030
Trakton 3036
Trans Continens  3037
Trans PX  3038
Transfec  4143
Transonic  3041
Transtec  3042
Tredex  3045
Trident 3054
Tristar   3057
Triumph  3058
TruTech  3467
TS  3063
Tuntex  3069
Tusa  3073
TV86  3076
TView   3079
TVS   3081
U
Uher    3089
UltimateTV 3091
Ultravox  3095
Unic Line  3100
Uniden  3101
Unika   3102
Unitech  3105
United  3106
United Artists 3107
United Cable 3108
Universal 3113
Universum 3115
Univox   3116
Urban Concepts 3121
US Digital 3122
US Electronics 3123
US Logic 3124
V
V2   3128
Vector  3136
Vector Research  3137
Venturer  3143
Verizon  3146
Vestel  3148
Vexa  3149
Victor  3155
Video Concepts   3157
Videologic  3165
Videologique 3166
Videosonic 3171
VideoSystem 3172
Videotechnic 3173
Videotron 3175
Vidikron  3178
Vidtech   3179
Viewmaster    3182
ViewSat  3185
Viewsonic   3186
Viewstar  3187
Viking   3188
Villain   3189
Viore   3192
Visco   4232
Visiola   3197
Vision   3198
Vizio  3211
Vocopro  3213
Voodoo 3215
Voom  3216
Vortec   3217
Vortex View  3218
Voxson 3220
W
Waltham  3230
Wards  3231
Watson  3233
Watt Radio    3234
Waycon 3237
Wega  3238
Wegavox 3239
Weltblick 3245
Westinghouse  3249

Wharfedale 3255
White Westinghouse 3258
Windstar 3266
Winegard  3268
X
Xbox 3295
Xiahua  3299
Xiangyang 3301 
Xiangyu   3302
Xihu  3303 
Xinaghai  3304 
Xingfu  3305
Xinghai  3306
XR1000 3316
Xrypton  3317
Xuelian 3320 
Y
Yamaha 3326
Yamishi 3328
Yapshe   3329
Yokan  3335
Yoko  3336
Yorx    3340
Yuhang  3345
Z
Zanussi  3349
Zenith  3356
Zentech 4031
Zentek   3361
ZhuHai   3364
ZT Group 3370

LG 52LG50FD, 52LG50FD-SA-Service adjustments-service mode entry-white balance adjustment-ADC component 1 RGB adjustment and more

  These adjustments are similar to 42LB7DF Because this is not a hot chassis, it is not necessary to use an isolation transformer. However...