Friday, February 13, 2015

UN 55B7000WMXZD - SAMSUNG TFT- LCD TV - SERVICE MODE - TROUBLESHOOTING

How to enter Service Mode _ Samsung 55B7000WMXZD LCD TV _ Troubleshooting
SERVICE MODE
To enter ‘Service Mode’ Press the remote -control keys in this sequence:
If you do not have Factory remote – control.
MUTENumber Key(1)Number Key(8)Number Key(2)Power on
The buttons are active in the service mode.
1 Remote - Control Key : Power, Arrow Up, Arrow Down, Arrow Left Arrow Right, Menu, Enter, Number Key(0~9)
2 Function - Control Key : Power, CH +, CH -, VOL +, VOL -, Menu, TV/VIDEO(Enter)
PANEL CHECK
You have to check Panel Maker Because of different adjustments as follows.
First of all, check the label rating
Label Rating File
LCD PANEL MARK
A:ACER(AUO) S : SEC C : CMO.  If not printed you could consider S(sec) panel mark.
WISE-LINK BUTTON
Using the WISELINK Function
This function enables you to view and listen to photo(JPEG), audio files(MP3) and movie(MPEG) saved on a USB Mass Storage Class (MSC) device.
* Press the POWER button on the remote control or front panel.
* The TV is powered on.
Connect a USB device containing JPEG and/or MP3 and or/MPEG files to the WISELINK jack (USB jack) on the side of the TV.
* (If you enter the WISELINK mode with no USB device connected the message “No external storage device found.  Check the connection status.” will appear. In this case, insert
the USB device, exit the screen by pressing the W.LINK button on the remote control and enter the WISELINK screen again.
> MTP (Media Transfer Protocol) is not supported.
> The file system only supports FAT16/32 (The NTFS fie system is not supported).
> Certain types of USB Digital camera and audio devices may not be compatible with this TV.
> Wiselink only supports USB Mass Storage Class devices (MSC). MSC is a Mass Storage Class Bulk-Only Transport device. Examples of MSC are Thumb drives and Flash Card
Readers (Both USB HDD and HUB are not supported.)
> connect directly to the USB port of your TV. If you are using a separate cable connection, there may be a USB Compatibility problem.
> Before connecting your device to the TV, please back up your files to prevent them from damage or loss of data. SAMSUNG is not responsible for any data fie damage or data loss.
> Do not disconnect the USB device while it is loading.
> MSC supports MP3 and JPEG files, while a PTP device supports JPEG files only.
> The sequential jpeg format is supported.
> Photo and audio files must be named in English, French or Spanish. If not, the files cannot be played. Change the file names to English, French or Spanish if necessary.
> The higher the resolution of the image, the longer it takes to display on the screen.
> The maximum supported JPEG resolution is 15360 x 8640 pixels.
> For unsupported or corrupted files, the “Not Supported File Format” message is displayed.
TROUBLESHOOTING
* Check the various cable connections fist.
* Check to see if there is a burnt or damaged cable.
* Check to see if there is a disconnected or loose cable connection.
Check to see if the cables are connected according to the connection diagram.  Check the power input to the Main Board.  Check the Power input to the FRC(Frame Rate Conversion) Board.  Check internal Pattern both of FRC and FBE3 if there is some picture noise.
FRC: Factory mode (MUTE - BUTTON 1 - BUTTON 8 - BUTTON 2 - Power on) > FRCM > TP After DDR Press right button of Remocon.
FBE3: Factory mode (MUTE - BUTTON 1 - BUTTON 8 - BUTTON 2 - Power on) > FBE > Patt Sel > Press right button of Remocon.
Case1: FBE3 ok, FRC NG: change the FRC Board Case2: FBE3 NG: change the main Board.
Check the LED lamp for source button on front.
If this LED blank 100mS frequently then FRC board is defective (communication problem via Main board) in this case change the FRC board.
NO POWER
> 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
Audio is normal but no picture is displayed on the screen.
> Check the PC source
> Check the SDP84 (ARSENAL)
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.