SAMSUNG CRT TV-WS-32Z30HPQ - SMPS (Power) and Deflection - Circuit Diagram (Schematic)

Samsung WS32Z30 - SLIM CRT TV - Power _ Deflection _ Ass'y Feature box & CRT base card Circuit Diagram.
Universal remote control Set-up codes to check with Samsung brand TVs.

POWER & DEFLECTION ASSY'

CN601  > This is a 4 pin port connected to the Speaker, and sends the signal from the AMP to the speakers.
CN403  > This is a 8 pin port connected to the CRT Board and supplies 200V, +16V, -16V and Heater voltage.
GT804  > This is a ground port to prevent high voltage due to lighting.
CN802  > This is a 3 pin port connected to the AC power cable. It is connected to the power cable socket.
GT805, GT806  > This is a port connected to the D-Coil surrounding the CRT.

SCHEMATIC-SMPS

ASSEMBLY FEATURE-BOX

CN07 > This is a 14 pin port connected to the CRT Assy's, and outputs final R/G/B signals to the CRT Ass'y.

In addition, it outputs the Tilt, VM, and Power signals for the CRT Drive.
CN05 > This is a 4 pin port connected to the Control Ass'y, and receives TV/Video, Menu, Ch Up/Down and Vol -/+ signals.
CN04 > This is a 6 pin port connected to the Master Ass'y, and receives Master Power On/Off, and IR signals.
CN03 >  This is a 8 pin port connected to the Side AV, and receives S-Video2 and AV4 external inputs.

CRT DRIVE CARD

GT501, GT502, GT505, GT506 > This is a port connected to the TBC-Wire and plays the role of CRT ground.
GT503, GT504 > This is a port for countermeasures against compulsory discharges and is connected to the Main Board.
CNC04 > This is a port to receive the R/G/B output signals from the Feature Box.
CNC02 > This is a port that receives power for the CRT and AMP from the Main Board.
FV1 > A port to connect the VM signal to the DY Ass'y.
FN1 > A port to connect signals to the Tilt Coil and is regarded for the screen slant adjustment.
URC set-up codes

0030 0049 0050 0066 0076 0101 0102 0119 0143 0152 0154 0166 0181 0195 0209 0217 0240 0307 0318 0365 0379 0414 0421 0488 0492 0601 0624 0637 0642 0827

If your set need a 3 digit code; just convert these codes to 3 digits, by strike out the leading 'Zero' from each code, and try.  That is, for 0030, you can check 030; for 0066, you can check 066 etc:

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SAMSUNG LA32C450 - LA26C450 - LA22C450 - HOW TO ENTER SERVICE MODE - TROUBLESHOOTING

LA22C450E1 - LA26C450E1 - LA32C450E1 _SAMSUNG LCD TV - Service Mode_Troubleshooting

HOW TO ENTER SERVICE MODE 

> Turn the power off and set to stand-by mode
> Press the remote buttons in this order to turn the set on.
> The set turns on and enters service mode. This may take approximately 20 seconds.
> Press the Power button to exit and store data in memory.  - If you fail to enter service mode, repeat steps 1 and 2 above.

Initial SERVICE MODE DISPLAY State

How to enter the hidden factory mode.
a. into the factory mode
b. move the tap to Advanced
c. key input : 0 + 0 + 0 + 0 ** hidden menu : Advanced.

Buttons operations within Service Mode

Direction Keys UP/DN - Item Selection by Moving the Cursor

Direction Keys L/R - Data Increase / Decrease for the Selected Item

Source - Cycles through the active input source that are connected to the unit.

FAULTS & CHECKS

No Power (SX1)

The LEDs on the front panel do not work when connecting the power cord.   The SMPS relay does not work when connecting the power cord.   The units appear to be dead.

The IP relay or the LEDs on the front panel does not work when connecting the power cord if the cables are improperly connected or the Main Board or SMPS is not functioning. In this case, check the following:
* Check the internal cable connection status inside the unit.
* Check the fuses of each part.
* Check the output voltage of SMPS.
* Replace the Main Board.

Audio is normal but no picture is displayed on the screen.

* Check the PC source.  Check the IC1102(SX1).

* Check the HDMI source.  Check the IC1102(SX1) , Check the HDMI switch.

* Check the Tuner CVBS source
* Check the M-star
* Check the Video Source

Video is normal but there is no sound.

* When the speaker connectors are disconnected or damaged.
* When the sound processing part of the Main Board is not functioning.
* Speaker defect.

No Power (X4)

The LEDs on the front panel do not work when connecting the power cord.  The SMPS relay does not work when connecting the power cord.  The units appear to be dead.

The IP relay or the LEDs on the front panel does not work when connecting the power cord if the cables are improperly connected or the Main Board or SMPS is not functioning.
* In this case, check the following:
* Check the internal cable connection status inside the unit.
* Check the fuses of each part.
* Check the output voltage of SMPS.
* Replace the Main Board.

No Video_Analog PC signal (X4)

Audio is normal but no picture is displayed on the screen.

* Check the PC source
* Check the Arsenal, Check the Chelsea.
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.

No video_HDMI1, 2, 3, 4 - Digital signal (X4)

Check the HDMI source.
Check the HDMI switch, Check the Chelsea.

No Video_Tuner - CVBS (X4)

Check the Tuner CVBS source.
Check the Tuner, Check the Chelsea.

No Video_Video CVBS (X4)

Audio is normal but no picture is displayed on the screen.

* Check the Video CVBS source
* Check the Chelsea.
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.

No Video_Component (X4)

Check the Component source
Check the Chelsea.

No Sound (X4)

Video is normal / when the speaker connectors are disconnected or damaged.
When the sound processing part of the Main Board is not functioning.
Speaker defect.

VINVERTH VH32A5 - LCD TV - My Service Experience - Today the 8th Jan:2015

Vinverth VH32A5 - LCD TV - Dead set_Liquid spilled inside.

Faults occurred.
> Fuse blown [4Amp 250v]
> MOSFET5N50C at the main power regulator board [SMPS] damaged.
SMPS PWB _ FSP180-4H02
Main DIGITAL BOARD_ TM30G-V1.0
  Before replacing the fuse with an other, checked all the other components at the SMPS board for further damage.  Nothing fount abnormal, except a short circuit at the DC [rectified] voltage noticed. Soldered out the switching MOSFET 5N50C.  No short circuit measured.  On checking, the plastic body of the MOSFET has burned out and carbon particles accumulated there, causing a conduction path through the fixing screw to the heat sink metal; at the screw point.  I've illustrated the damage occurred to MOSFET in detail here.  Very rare fault indeed.  Might be of arcing due to water spill inside the set; I assume.  Replaced the MOSFET with a new one, no short circuit detected, inserted the fuse, switched the set On; OK.
See the component location and occurred damage to it

Damage to the component.

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PHILIPS 32PFL3506/F7 - 32PFL3000/F8 -SERVICE MODE-INITILIZATION-POWER_INVERTER SCHEMATIC DIAGRAM

How to enter service mode - How to initialize - Main power & back-light Inverter CBA circuit diagram - Philips 32PFL3506/F7 - 32PFL3000/F8

SERVICE MODE

* Turn the power on.
* Press [MENU] button to display Setup menu.
* Select “Features”.
* Select “Current Software Info”.
* Press [0], [6], [2], [5], [9], [6] and [INFO] buttons on the remote control unit in this order. The following screen appears.

HOW TO IINITIALIZE

The purpose of initialization is to place the set in a new out of box condition. The customer will be prompted to select a language and program channels after the set has been initialized.
To put the program back at the factory-default, initialize the LCD TV using the following procedure.

Turn the power on.
* Enter the service mode. [To cancel the service mode, press [Power] button on the remote control unit.]
* Press [INFO] button on the remote control unit to initialize the LCD television.
* "INITIALIZED" will appear in the upper right of the screen. "INITIALIZED" color will change to green from red when initializing is completed.

MAIN POWER SUPPLY [SMPS] SCHEMATIC

BACK-LIGHT INVERTER SCHEMATIC

Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.  If Main Fuse (F601) is blown , check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components in the power supply circuit to fail.  The voltage for parts in hot circuit is measured using hot GND as a common terminal.

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HOW TO ENTER SERVICE MODE - SONY KDL-22/26EX550,553,555,32EX650,653,655

KDL-22/26EX550,553,555,32EX650,653,655(AEP/UK/IT)

Following S/N Range is for (BCN)

1,000,001-1,950,000

Service Mode_V-Com adjustment_White balance adjustment_set to Shipping Condition.

SERVICE MODE

* Turn on the main power switch to place this set in standby mode.
* Press the buttons on the remote commander as follows, and entering service mode.

              DISPLAY > CHANNEL-5 > VOLUME + > TV POWER

Service mode display.
Note: First of all, when you enter Service Mode, you can see “Digital” service mode.  Whenever you press “OPTIONS” or “JUMP” on remote, each service mode is changed. “Digital” > “Chassis” > “VPC”.

USING THE REMOTE CONTROL IN SERVICE MODE

After entering service mode, then turn off the power switch.

CHANGING THE DATA VALUES

Note: “Digital” service mode don’t have to Save. (except“002 MODEL” and “005 CHPRSET” category)
1. Change Data of“Digital”service mode. (except“003 DIG_SRV_MODE” category)
a. Press “2 / 5” on remote to select (up / down) category.
b. Press “1 / 4” on remote to select (up / down) Item.
c. Press “3 / 6” on remote change (up / down) data.

2.  Change Data of“Digital”service mode. (“003 DIG_SRV_MODE”category)
“003 DIG_SRV_MODE” is one category of “Digital” service mode.
Please note because this operation is special.
a. Press “2 / 5” on remote to select “003 DIG_SRV_MODE”.
b. Press “1 / 4” on remote to select (up / down) Item.
c. Press “0 / 10” on remote to select item.
d. Press number key “1”~”9” directly. “*” stamp move.
e. Press “12 / enter / select” to decide and advance next step. Press “return”, when returning on the previous page.

TO SAVE THE CHANGED DATA

1. Write data for“Chassis”or“VPC”service mode
a. Press “Mute” on remote.  It shows green “SERVICE” changes to green “WRITE”.
b. Press “0” or “enter” on remote. Green “WRITE” changes to red “WRITE”. It indicates writing is processing.
c. After a while, red “WRITE” changes to green “SERVICE”. Writing process is done at this point.
2. TV reboot is necessary for applying data change.

WHITE BALANCE ADJUSTMENT

Note: execute this adjustment if necessary.
Change Data of“VPC”service mode. (“006 WB”category)
a. Press “1” or “4” on remote to select WB adjustment menu.
b. Change data by pressing “3” or “6”. Each range of these items is 0~255.
c. Press “mute” + ”0” on remote to save the data.  “SERVICE” comment is changed to “WRITE”, indicating writing process.
d. After a while, “WRITE” comment returns to “SERVICE”, which means writing process is done.

VCOM ADJUSTMENT

Note: Execute this adjustment if necessary.
1. Change Data of“VPC”service mode.
a. Select“002 VCOM”category by pressing “2 / 5” on remote.
b. Select “000 ENABLE” item bypressing “1 / 4” on remote.
c. Change ENABLE from “0” to “1” to enable VCOM adjustment.

d. Select“002 VCOM”category by pressing “2 / 5” on remote.
e. Select “001 ADJUST” item by pressing “1 / 4” on remote.
f. Change data by pressing “3 / 6” on remote controller.
g. Finish the adjustment when the picture seems OK.

{Every time the data changed by pressing “3 / 6” Key, the VCOM pattern will display for 5s and in the mean time OSD will disappear, After the 5s period, VCOM pattern will disappear and OSD will display again.  The 5s time can be adjust by data change.
If pressing the “3/6” key again during the 5s period, the VCOM pattern display time will be extended to another 5s.}

TO SET THE SHIPPING CONDITION

* Move to“Digital”service mode.
* Press “8” on remote.
* It shows green “SERVICE” changes to green “RST-”.
* Press “mute” on remote.  Added green “EXE” after green “RST-”.
* Press “0” on remote. Green “EXE-RST” changes to red “EXE-RST”. It indicates writing is processing.  After a while, red “EXE-RST” changes to green “SERVICE”.  And all LED lights.
Writing process is done at this point.

You can set to shipping condition w/o entering Service Mode.
> “Cursor Up” on remote + “Power Key” on Front panel.

SONYKDL-22EX550-26EX550-32EX650 - HOW TO REMOVE THE BACK COVER and AC COVER

BACK COVER REMOVAL _ SONY KDL-22EX550_KDL-22EX553_KDL-22EX555_KDL-26EX550_KDL-26EX553_KDL-26EX555_KDL-32EX650_KDL-32EX653_KDL-32EX655 - LCD Digital Color TV

* Create clearance between Bezel Assy and Rear cover with holding Rear cover.

 * Insert finger in the bottom corner.

 * Holding the rear cover so that it doesn't move, and then release the side hook.  
 Note: Without “holding Rear cover by hand”, Rear cover hooks won’t be released easily. (Possibility of damage to Rear cover hooks or Bezel Clips.)

 * Lift the lower part of the rear cover, and then release the top hook and corner hook. [When releasing the top hook from the rear cover, push the rear cover forward.]

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SONY KDL22EX308 - KDL32EX308 Back-light Issues _ Check Points

KDL22EX308 - KDL32EX308 Back-light Issues _ Check Points - Sony LCD TVs.

BACK-LIGHT ISSUES

  Under normal circumstances, any failures in the back-lighting system will cause the unit to shut down. If one or more of the fluorescent back-lights fails to turn on, or if the high voltage inverter circuit fails to turn on, the unit will shut down and the standby LED will blink in groups of 6.  The first step to determine the cause of the failure is to observe the screen of the television when it is first turned on. If the back-lights turn on before the shutdown, it is likely that one of the lamps has failed to turn on and the LCD panel must be replaced.  If the back-lights do not turn on, the high voltage inverter did not start and, depending on the method of generating high voltage, replacement of the power supply or inverter board is necessary.

NO BACK-LIGHT_NO SHUT DOWN

  It is possible for a symptom of no back-lighting to occur that does not cause the television to go into protective shutdown. Dynamic dimming control of the back-lights is performed by monitoring information from the TCON board. This is in the form of data and determines the brightness level of the back-lights based on video content.  If the TCON fails to process the RGB video data, or if the dimmer data line fails, the back-lights will not turn on. Audio will be present if the selected input has it available. The television will remain on indefinitely with the green Power LED lit. If the TCON is available, it can be replaced to resolve the issue. If not, the LCD panel must be replaced.

Diagnostics History
Figure illustrates an example of the diagnostics history page. Entry to this page is achieved while the television is powered down and pressing the following buttons on the remote commander: “DISPLAY”, “5”, “VOL –“, “POWER”.  This feature is useful for failures which are intermittent or when the customer is not sure what is causing the television to shut down sometimes. Once a corrective action is determined the error events should be cleared to zero.  This is accomplished by pressing the “8” key followed by the “0” key on the remote commander.

  The drawing in Figure contains the board-to-board connector and pin information for the KDL22EX308 to identify voltages, signal and control
lines for troubleshooting purposes. Figure illustrates the same information for the KDL32EX308. All critical voltages and control signals are easily accessed at the power supply board. Use this drawing in conjunction with the previously discussed troubleshooting techniques and flowcharts for testing operating voltages and control signals.  Figure illustrates the rear of a KDL22EX308 with the cover removed.  The location of the major circuit boards and connectors for voltage checks is provided.

SONY KDL Series TVs.

KDL22EX308 TEST POINTS & BOARD LOCATIONS

KDL32EX308 TEST POINTS & BOARD LOCATIONS

LG 32LV5500 EDGE LED LCD TV - POWER and AUDIO ERROR TROUBLESHOOTING

Power Error_Function error_Audio error_ Troubleshooting.  LG 32LV5500 North/Latin America - Europe/Africa - Asia/Oceania.  LG 32LV5500 LED LCD TV

POWER ERROR_NO-POWER

* Check power input voltage and ST-BY 5V

For ’10 models, there is no voltage out for st-by purpose.  
When st-by, only 3.5V is normally on.

Checking method when power is ON

Power error_Off when on, off whiling viewing.  POWER OFF MODE checking method.

* Press the IN-START button of the remote controller for adjustment 
* Check the entry into adjustment item.
Audio error_No audio/Normal video

Voltage and speaker checking method when there is no audio.

* Check the contact condition of or 24V connector of Main Board.

* Measure the 24V input voltage supplied from Power Board.  (If there is no input voltage, remove and check the connector)

*Connect the tester RX1 to the speaker terminal and if you hear the Chik Chik sound when you touch the GND and output terminal, the speaker is normal.

Function error_ No response in remote controller, key error.

Remote controller operation checking method

* Check IR cable condition between IR & Main board.

* Check the st-by 3.3V on the terminal 6.

When checking the Pre-Amp when the power is in ON condition, it is normal when the Analog Tester needle moves slowly and defective when it does not move at all.

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