Bem-vindo,
Visitante
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Saludos colegas del foro,
Les vengo a solicitar una ayuda con esta tv que inicialmente me llego sin encender tenia el tubo de imagen en corto, lo reemplaze y el tv ya enciendio con imagen pero con el volumen del audio muy bajo para lograr que se escuche hay que alsar en 100 el volumen, en la etapa de audio encontre el capacitor del +b inflado lo substitui y algunos otros pero no luegro solucionar la falla, este tv trae el chasis KLX-S10X con el LA76931 y como ci de audio el TDA2003 ya probe otro parlante en las 2 salidas del ci se escucha igual de bajo, en los pines del ci tengo las seguintes tensiones 1 1V3 2 0.80 4 9V 5 18V Desde luego muchas gracias por la atencion. |
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Veja os dados entrando no modo de serviço do LA76931.
TO ENTER FACTORY MODE Press MENU button on the remote control firstly, then the press RECALL button three times sequentially to enter FACTORY MENU. Press P+ or P- button on the remote control to select test item. Press V+ or V- button on the remote control to adjust the value of selected item. Press RECALL button again to exit FACTORY MENU. FACTORY - 00 H-PHASE 11 OSD-H-POSITION 25 V-SIZE 82 V-POSITION 1 V-LINEARRITY 22 V-SC 4 V-KILL 0 SUB-BRIGHT 85 RF-AGC AUTO 25 FACTORY - 01 H-BLK-L 1 H-BLK-R 2 TUNER 0-3 Q Q2 A A2 0 VOL LINEAR MEASURE 1 B-Y DC LEVEL 11 R-Y DC LEVEL 10 B-Y DC LEVEL-YUV 6 R-Y DC LEVEL-YUV 6 FACTORY - 02 RED-BIAS 117 GREEN-BIAS 134 BLUE-BIAS 153 RED-DRIVE 99 GREEN-DRIVE 10 BLUE-DRIVE 92 OPTION - 00 BACK COVER OPTION 0 Q-ASM OPTION 0 OPT-AV-SYSTEM 0 Y-IN 0:P48 1:P54 1 OPT-YUV 0 LANGUAGE SW CE 1 ENG 0 : CH 1 0 ONLY ENG AND TAI 0 OPTION - 01 LV1116 OPT 0 AUDIO SW 1 SIF6.5M 1 SIF6.0M 1 SIF5.5M 1 SIF4.5M 1 POWER SUPPLY VOLTAGE ADJUSTMENT Check AC voltage is normal or not, AC220V 50Hz. Receive Television broadcast signal, adjust Brightness and Contrast until the standard picture is obtained. Adjust RP950 until voltage between cathode of VD950 and GND of chassis is 110V±0.5V. WHITE BALANCE AND SUB BRIGHTNESS ADJUSTMENT BLUE BACK must be turned off and factory menu must be ON before placing the set with aging test. Set Unit to AV, and set the picture to standard mode. Enter FACTORY MENU 00, press P+ or P- button to choose V-KILL, then press V+ button to display horizontal light line on the screen, adjust SCREEN potentiometer so that the horizontal light line just displays anyone color of R,G and B, press V- button to restore the screen. Input left black and right white signal for white balance adjustment. Insert I2C controller plug which is used for automatic adjustment system into XS600 socket on the main board. Turn on color analyzer CA100 to make zero correction. Run the program [WB76810.exe t213.wbd] Press “SPACE” key or press switch on the controller socket, white balance adjustment will be operated automatically. If OK, “ Click” will be heard. Pull out I2C controller plug from XS600, receive black-white PAL five circles pattern signal, and set the picture to standard mode. Enter FACTORY MENU 00, adjust sub-brightness until black-white gray scale is 7~7.5. HF AGC ADJUSTMENT Receive signal (VHF channel) Set input field strength to 60dBμV Enter into FACTORY MENU 00, select RF AGC item, press V+ button to adjust RF AGC automatically, and when the adjustment is finished, the screen will display RF AGC value. OSD POSITION ADJUSTMENT Receive PAL five circles pattern signal. Enter into FACTORY MENU 00 and select OSD-H-POSITION, then press V+/V- button to adjust OSD to the proper position TECHNICAL NOTE OF LA-76931 PIN 1 SIF OUTPUT 2.8V DC PIN 2 IF AGC FILTER PIN 3 SIF INPUT 3.3V DC PIN 4 FM FILTER PIN 5 FM OUTPUT 2.5V~3.5V PIN 6 AUDIO OUTPUT DC PIN 7 SND APC FILTER PIN 8 IF VCC 5V DC PIN 9 EXT AUDIO INPUT 2.9V DC PIN 10 ABL AUTO BEAM LIMITER PIN 11 RGB VCC 8V DC PIN 12 PIN 13 PIN 14 R,G,,B OUTPUT PIN 15 NC PIN 16 V RAMP OSC.CAPACITOR Connect 0.47uF capacitor to GND PIN 17 VERTICAL OUTPUT PIN 18 VCO I REFERENCE Connect 4.7k resister to GND PIN 19 HORIZONTAL/BUS VCC 9V DC PIN 20 AFC FILTER PIN 21 HORIZONTAL OUTPUT PIN 22 VIDEO CHROMA DEFLECTION GND GND PIN 23 NC PIN 24 NC PIN 25 SVHS CONTROL CONTROL S OSD PIN 26 REM Remote control PIN 27 AV2 PIN 28 AV1 Control av1/av2 input PIN 29 NC PIN 30 MUTE PIN 31 SDA I2C control PIN 32 SCK I2C control PIN 33 XT1 32.768KHz PIN 34 XT2 32.768KHz PIN 35 CPU VCC 5V DC PIN 36 POWER Control standby PIN 37 NC PIN 38 AGC PIN 39 KEY KEY control PIN 40 RESET PIN 41 PLL PIN 42 CPU GND PIN 43 CDD VCC 5V DC PIN 44 FBP INPUT PIN 45 C INPUT FOR Y/C MODE PIN 46 Y INPUT FOR Y/C MODE PIN 47 DDS FILTER PIN 48 Y INPUT FOR YcbCr MODE PIN 49 Cb INPUT forYcbCr MODE PIN 50 4.43MHz CRYSTAL PIN 51 Cr INPUT FOR YcbCr MODE PIN 52 SELECTED VIDEO OUTPUT OR FSC OUTPUT PIN 53 CHROMA APC FILTER PIN 54 EXT VIDEO INPUT PIN 55 VIDEO CHROMA DEFLECTION VCC PIN 56 INT VIDEO INPIT PIN 57 BLACK STRETCH FILTER PIN 58 PIF APC FILTER PIN 59 AFT OUTPUT PIN 60 VIDEO OUTPUT PIN 61 RF AGC OUTPUT PIN 62 IF GROUND PIN 63 PIF AMP INPUT PIN 64 PIF AMP INPUT |
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Hola rui gracias por la ayuda, ya consegui entrar nel modo service del factory pero no consigo entrar en el OPTION-01 este creo que es el responsable por el volume. saludos
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Existem dois modos de serviço, veja se com este funciona... o ajuste de audio é diferente.
There are two ways to enter the service mode to TVs fitted with this kit. -Press and Hold Volume Down button at the front panel of the TV, until volume level comes to zero. -Press “Display” button on the remote control, while pressing the Volume Down button. The other ways is to press the set key [can be located in between Sleep and Game keys], if the supplied remote control is [DGT-5AM3]. For the first press to Set key said above, will display [ --Product--], on the top of the screen. An other press will display [C-B/W – 00]. After this, press Digit-1 on the remote control. The screen will display: VER.79RJ:F2 PO-1: V-POSI/P 27: V-SHIFT/P 04: V-LIN/P 18:V-SC/P 29:V-SIZE/P 51:V-POS/NT +05:V-SHIFT/NT 00:V-LIN/NT 00:V-SC/NT --11 V-SIZE/NT --19 Now press Digit [2] on the remote control. The screen display changes to: VER 79RJ-F2 PO-2 C-B/O 00 RB 19 CB 124 BB 67 R-D 85 G-D 01 B-D 85 S.B 99 Now press digit [3] on the remote control. The screen display changes to: VER 79RJ-F2 P-03 RF-AGC 36 BRI-MAX 63 CONTRAST/50 63 COLOR/50 63 SHARP/50 63 TINT 32 BRI-MIN 00 B-Y/DC.DVD 08 R-Y/DC.DVD 08 FACTORY RESET NO Now press digit [4] on the remote control. The screen display changes to: VER 79RJ-F2 P-04 OPT-AV 01 OPT S-VIDEO NO OPT-DVD NO OPT-AV3 NO VS-TUNER YES OPT-BAND 02 VL TO VH 144.25 Mhz VH TO V 389.75Mhz Tune speed 01 Now press digit [5] on the remote control. The screen display changes to: VER 79RJ-F2 P-05 ENG OSD ON CHN OSD ON THA OSD ON VIE OSD ON INA OSD ON FRA OSD ON HALF TONE CD Now press digit [6] on the remote control. The screen display changes to: VER 79RJ-F2 P-06 COL AUTO ON COL PAL ON COL NTSC ON COL-N 4.43 ON DEF COLOR --- C-TRAP ADJ/PAL 04 C-TRAP ADJ/NTSC 04 C-BPF ADJ 00 C-VCO ADJ NTSC 04 TV-OUT/AV OFF Now press digit [7] on the remote control. The screen display changes to: VER 79RJ-F2 P-07 SIF D/C OFF SIF I OFF SIF B/G ON SIF M/N OFF SIF BG2 ON DEF SOUND --- DEM TC 00 FM GAIN 00 V60 M/N-AUTO OFF VOL-DDB NO Press digit [8]. The display will be: VER 79RJ-F2 P-08 OPT BALANCE NO VOL/01 00 VOL/16 61 VOL/36 103 MENU KEY 1 -/--- KEY 00 PRO-MUTE ON OPT AV-PNP 00 CURTAIN H-POS 00 CURTAIN TYPE 00 Press digit [9] on the remote will change the display to: VER 79RJ-F2 P-09 AC POSER ON LAST ON-TV/AV TV ON-DELAY 02 ON SEARCH OFF ON CURTAIN OFF OFF CURTAIN ON AV CURTAIN 1 OFF-V-DELAY 00 OFF-PIC BLK ON TO EXIT FROM SERVICE MODE, PRESS THE ST KEY AGAIN |