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 LE40A330J1XKS TROUBLE SHOOTING AND SERVICE MODE ADJUSTMENTS

SAMSUNG LE40A330J1XKS TROUBLE SHOOTING AND SERVICE MODE ADJUSTMENTS


SAMSUNG LE40A330J1XKS

LED TV 

 TROUBLE SHOOTING AND SERVICE MODE ADJUSTMENTS 


TROUBLE SHOOTING
THERE IS 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.
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
THERE IS NO VIDEO WHILE USING ANALOGUE 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.
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)? > Check a IC5001. Change a main PCB ass’y
Check a LVDS cable? Replace a lcd panel?
THERE IS NO VIDEO WHILE USING HDMI
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?
THERE IS NO VIDEO WHILE USING RF INPUT
 SYMPTOM
Audio is normal but no picture is displayed on the screen. 
CHECK POINTS
heck the Tuner CVBS source
Check the SEMS01
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
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?
THERE IS NO AUDIO
SYMPTOM
Video  is normal but no audio
CHECK POINTS
Check the RF Source
Check the SEMS01
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
Does the signal appear at C2058~65? > Check sound cables of each source, and 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.
 General Alignment Instruction
1.Usually, a color LCD-TV needs only slight touch-up adjustment upon installation. 2.Check the basic characteristics such as height, horizontal and vertical sync. 3.Use the specified test equipment or its equivalent. 4.Correct impedance matching is essential. 5.Avoid overload. Excessive signal from a sweep generator might overload the front-end of the TV. When inserting signal markers, do not allow the marker generator to distort test result. 6.Connect the TV only to an AC power source with voltage and frequency as specified on the backcover nameplate. 7.Do not attempt to connect or disconnect any wire while the TV is turned on. Make sure that the power cord is disconnected before replacing any parts. 8. To protect against shock hazard, use an isolation transformer.
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)
White Balance – Calibration
Color Calibration
Adjust spec.
1. Source : HDMI
2. Setting Mode : 1280*720@60Hz
3. Pattern : Pattern #24 (Chess Pattern)
4. Use Equipment : CA210 & Master MSPG925 Generator
AV ADJUSTMENT  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. COMPONENT ADJUSTMENT  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. PC ADJUSTMENT  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. HDMI ADJUSTMENT  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.
Posted By: FRANK at 02:21
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