TOSHIBA LC3241 - LC3741 - LC4241 - LC2077 - 32CV550 - POWER & AUDIO OUTPUT-SCHEMATIC (Circuit Diagram)

SCHEMATICS   CLICK ON THE SCHEMATICS TO MAGNIFY

AUDIO OUTPUT SCHEMATIC

FIRMWARE UPDATE - TOSHIBA 32AV554/5D - 37AV554/5D - 42AV554/5D LCD TV [France]

# No picture under the weak electric field of DVB-T

# Block noise appears or No receiving the Signal under the multi pass setting.

Corrective action; Firmware upgrading through interface PCB (FWA1209)

Firmware is subject to the model as below.

As for 32AV555D, to check the panel information, enter the service mode.  And then, press the button on the remote controller in sequence of “9” and “9”.

Confirm if Panel is SHARP or LPL on Version check mode as shown figure.

Firmware updating procedure

NOTE: PERSONAL AND CUSTOM PREFERENCES WILL BE LOST UPON COMPLETSION OF THIS FIRMWARE UPDATE. PLESE MAKE NOTE OF ANY PREFERENCE  SETTINGS PRIOR TO STARING THIS FIRMWARE UPDATE.

1. Plug in AC connector and Turn “ON” the TV.

2. Unplug the AC connector while TV is “ON”.

3. A socket for Interface PC Board is located at the left side of HDMI Terminal on the back of the TV. Open the lid covering the socket as shown figure.

4. Connect the USB memory to the Interface PC Board, and insert the Board to the socket.

5. Plug in AC connector to begin the Firmware upgrade.

6. A status bar will be displayed as shown Figure.

7. Upon completion, unplug the AC connector.

8. Pull out the Interface PC board from the Socket, and close the lid.

9. Plug in AC connector.

10. Writing of Ship out Data (ex-factory data for each Destination) starts automatically as shown figure.

Below is an example of a European Continental version.

11. Upon completion, “OK” is displayed as shown.

12. Unplug the AC connecter and the plug in SC connecter.

13. Press “Menu” button on the remote controller.

Via UP/DOWN keys on the remote controller, select

è “Set up”

è “Reset TV”

 Note; “Reset TV” function may not be visible until you select it through “Set up” menu.

14. Press the “Enter” button on the remote controller.

15. Use the right allow keys to select “Yes” and press” Enter” on the remote controller to reset the TV.

16. TV will reboot automatically and afterwards the Quick Setup Screen will be displayed. Follow the instructions on the screen and consult the owner’s manual for initial setup Setting.

17. To check the firmware version, press the “Menu” button on the remote controller and go “Set up” and “system information” in sequence.

18. Confirm if version is Ver T64.344 on system information.

HOW TO DOWNLOAD EDID(The Extended Display Identification Data ) / DDC(Display Data Channel) Data. LG37LC4R - LCD TV

EDID / DDC DATA DOWNLOAD

* Use the proper signal cable for EDID Download.

* Never connect HDMI & D-SUB Cable at the same time.

* Use the proper cables below for EDID Writing.

37LC4R - 37LC46-ZA - LG LCD TV - TROUBLESHOOTING CHART

TROUBLESHOOTING
NO RASTER

* No OSD and image occur at screen.

* It maintains the condition where the front LED is green.

NO SOUND

* LED is green.

* Screen display but sound is not output.

HDMI MODE

PROTECT MODE {PLASMA DISPLAYS ONLY}

Symptom

* After once shining, it does not discharge minutely from module.

** The relay falls.(The sound is audible “Click”.)

*** It is converted with the color where the front LED is red from green.

LG RZ37LZ55 - POWER SUPPLY SCHEMATIC (Circuit Diagram) - Faults - STR-T2268

                                             (CLICK ON THE SCHEMATIC TO ZOOM IN)

FUSE ==> T5A 250v

IC904 ==> STR-T2268

C920 ==> Capacitor 224k 50v

C921 ==> Capacitor 475k 16v

C924 ==> Capacitor 105k 16v

R290 ==> Resistor 331J

ZD911 ==> 1N5226B 3.3v Diode

Components that frequently blows out are:

R920 - 330R SMD resistor ZD911 - 1N5226B 3.3V zener diode.  R925 22R.  C920 - 220nF SMD capacitor. C921 - 4.7uF SMD capacitor. C924 - 1uF SMD capacitor. F901 - T5A 20mm fuse. IC904 - STR-T2268 (cracks and sometimes blows to bits ) 

SAMSUNG HP-T4254 - HP-T5054 - PLASMA - SCREEN FAULTS - SYMPTOMS

DEFECTS AND SYMPTOMS

Address Open, Short

Address Open and Short is related with Logic Main, Logic Buffer, FFC, TCP film and so on.

(Shows you how to check the boards, and the following show you how to find the defective board.)

# A blank vertical cell (block) appears on the screen. è Address buffer defect - Replace the corresponding upper/lower buffers (E, F)

COF defect (burnt) - Replace the module.

# A green screen appears when the TV is turned on. è The Scale is not resetting - Replace the Main board.

#The OSD box appears but there is no text. è Incorrect program version

 Check the version of each program.

 Replace the Main board.

# A blank upper (or lower) block appears on the screen. è Upper/Lower Buffer defect. - Replace the corresponding upper/lower buffers (E, F)

* Either the main or sub picture does not appear. è Replace the Main board.

* A vertical green line appears on the screen. è The SMPS voltage is incorrect.  Adjust the SMPS voltage according to the voltage printed on the module label.

* Dim screen (blurred in red). è X-Main board defect.   Replace the X-Main board.

* A blank screen appears. è Replace the Y-Main board.

Abnormal Display (Abnormal Image is on Screen.(except abnormality in Sustain or Address))

Abnormal Display is related with Y-MAIN, X-MAIN, Logic Main and so on.

SUPRA CTV - POWER SUPPLY [SMPS] - SCHEMATIC [Circuit Diagram)

SMPS SCHEMATIC 

CLICK ON THE SCHEMATIC TO ZOOM IN

CROWN PHONIC - LPS2500 - AMPLIFIER - SCHEMATIC (Circuit Diagram)

POWER SUPPLY     CLICK ON THE SCHEMATICS TO MAGNIFY 

SPEAKER OUT

POWER AMP

INPUT