REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

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All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Saturday, 9 March 2019

SAMSUNG LE26A33*J** - LE32A33*J** - LE37A33*J** = LE40A33*J** TROUBLE SHOOTING - SERVICE MODE - BACK COVER REMOVAL

SAMSUNG LE26A33*J** - LE32A33*J** - LE37A33*J** = LE40A33*J** TROUBLE SHOOTING - SERVICE MODE - BACK COVER REMOVAL


SAMSUNG LE26A33*J** - LE32A33*J** - LE37A33*J** -LE40A33*J**   

TROUBLE SHOOTING - SERVICE MODE - BACK COVER REMOVAL


TROUBLE SHOOTING
No Power
SYMPTOM
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 appears to be dead.
CHECK POINTS
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.
LAMP off, power indicator LED red color? > Check a connection a power cable.
Does proper DC 13V appear at pin20 of CN1101? > Change a Assy PCB Power.
Does proper DC A3.3V appear at C1040? > Check a IC1011 Change a main PCB ass’y
Does proper DC 5V, 3.3V, 1.2V appear at C1015, C1039, C1063? > Check a IC1002, IC1012, IC1006. Change a main PCB ass’y
No Video (Analog PC signal)
SYMPTOM
Audio is normal but no picture is displayed on the screen.
CHECK POINTS
Check the PC source
Check the SEMS01
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
Power Indicator is off. Lamp on, no video.
Check a PC source and check the connection of DSUB cable? > Input a analog PC signal and connected cable(DPMS).
Does the signal appear at BD3014, 3015, 3016 (R, G, B)? > PC cable. Change a PC cable.
Does the digital data appear at the output of LVDS (RA5012~13)? > Check a IC5001. Change a main PCB ass’y
Check a LVDS cable? Replace a lcd panel? > Please, Call to Samsung Co. LTD.
No Video (HDMI - Digital Signal)
SYMPTOM
Audio is normal but no picture is displayed on the screen.
CHECK POINTS
Check the HDMI source
Check the SEMS01
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
Check the connection of HDMI cable? > Input a HDMI cable.
Does the digital data appear at R5055~65? > Check a IC3001. Change a main PCB ass’y.
Does the digital data appear at the No output of LVDS (RA5012~14)? > Check a IC5001. Change a main PCB ass’y.
Check the LVDS cable? Replace the LCD panel?
No Video (Tuner_CVBS)
SYMPTOM
Audio is normal but no picture is displayed on the screen.
CHECK POINTS
Check the Tuner CVBS source
Check the SEMS01
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
Connect the RF cable and check RF signal.
Does the signal appear at L3001? > Check a B+ voltage (#3 of Tuner) 5V, change a main PCB ass’y.
Does the signal appear at R3169 of IC2601? > Change a main PCB ass’y.
Check the LVDS cable? Replace the LCD panel?
No Sound
Does the signal appear at C2058~65? > Check sound cables of each source, Nand a connection harness.
Does the signal appear at #3,#13 of IC2002? > Check IC2002. Change a main PCB ass’y.
Does the signal appear at BD2006~9? > Change a main PCB ass’y.
Factory Mode Adjustments
Entering Factory Mode
To enter ‘Service Mode’ Press the remote -control keys in this sequence :
- If you do not have Factory remote - control
INFO > MENU > MUTE > Power on
- If you have Factory remote - control
PICTURE ON > DISPLAY > FACTORY
- 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!
1) Label Rating File
- LCD PANEL MARK
A:ACER(AUO), S : SEC, C : CMO
* If not printed you could consider S(sec) panel mark.
White Balance –Calibration
Method of Color Calibration (AV)
1) Apply the NTSC Lattice (N0. 3) pattern signal to the AV IN 1 port
2) Press the Source key to switch to “AV1” mode
3) Enter Service mode
4) Select the “Calibration” menu
5) Select the “AV Calibration” menu.
6) In “AV Calibration Off” status, press the “ > ” key to perform Calibration.
7) When Calibration is complete, it returns to the high-level menu.
8) You can see the change of the “AV Calibration” status from Failure to Success.
Method of Color Calibration (Component)
1) Apply the 720p Lattice (N0. 6) pattern signal to the Component IN 1 port
2) Press the Source key to switch to “Component1” mode
3) Enter Service mode
4) Select the “Calibration” menu
5) Select the “Comp Calibration” menu.
6) In “Comp Calibration Off” status, press the “>  ” key to perform Calibration.
7) When Calibration is complete, it returns to the high-level menu.
8) You can see the change of the “Comp Calibration” status from Failure to Success.
Method of Color Calibration (PC)
1) Apply the VESA XGA Lattice (N0. 21) pattern signal to the PC IN port
2) Press the Source key to switch to “PC” mode
3) Enter Service mode
4) Select the “Calibration” menu
5) Select the “PC Calibration” menu.
6) In “PC Calibration Off” status, press the “ > ” key to perform Calibration.
7) When Calibration is complete, it returns to the high-level menu.
8) You can see the change of the “PC Calibration” status from Failure to Success.
Method of Color Calibration (HDMI)
1) Apply the 720p Lattice (N0. 6) pattern signal to the HDMI1/DVI IN port
2) Press the Source key to switch to “HDMI1” mode
3) Enter Service mode
4) Select the “Calibration” menu
5) Select the “HDMI Calibration” menu.
6) In “HDMI Calibration Off” status, press the “ > ” key to perform Calibration.
7) When Calibration is complete, it returns to the high-level menu.
8) You can see the change of the “HDMI Calibration” status from Failure to Success.
HOW TO UPGRADE
ATV S/W
1. Open the Flash Downloader.
2. Connect DDC Manager to the TV Set with D-SUB Cable.
3. Open the Flash Downloader.
4. Click “Connect”
Before clicking the icon, TV shoud be turned on.
5. Click “Program”
DTV S/W
1. Connect PC and TV Set with Serial cable. TV should be turned on.
2. Open the Samsung Set-top Box upgrade Wizard.
3.A) Choose the DTV S/W by clicking “Browse”
B) After choosing the S/W, click the “Next” icon.
4.A) Choose the DTV S/W by clicking “Browse”
B) After choosing the S/W, click the “Next” icon.
5. After scaning COM port, Model, and Version, click “Next”
How to Initialize.
Click “1. Option Table(Service)” > “Factory Reset” in Factory Menu.
You can make every setting in Factory Initial Status.
REMOVING THE BACK COVER
1. Place monitor face down on cushioned table. Remove the screws from the Stand. Remove stand
2. Lift up rear cover and remove the stand
3. Remove Screw from the stand BRKT and lift up the stand BRKT.

CLICK ON THE IMAGE TO ZOOM IN
Posted By: FRANK at 02:46
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