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 !

Thursday, 7 March 2019

SAMSUNG LA32A650A1H SERVICE MODE AND TROUBLESHOOTING

SAMSUNG LA32A650A1H Service mode and troubleshooting.

SAMSUNG  LA32A650A1H

Troubleshooting
Check the various cable connections first.
# 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 internal Pattern FBE3 if there is some picture noise.
FBE3: Factory mode(INFO - MENU - MUTE - Power On)-> Advanced Menu-> Option Block -> FBE3 -> Patt-Sel -> Press right button of Remote.
No Power
The LEDs on the front panel do not work when connecting the power cord.
The SMPS / IP Board relay does not work when connecting the power cord.
The units appears to be dead.
The SMPS / IP Board 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 Stand-By DC A12V appear at C1101_L?
Does proper Stand-By DC A5V appear at C1002?
Does proper Main DC B12VS, B5V, B12V appear at C2060, C1011, C1008_DE?
Does proper Inverter DC 12V appear at CN1001 in SMPS?
Does proper DC A3.3V appear at C1006? > Check IC1002 Change the Main Ass’y
Does proper DC B1.26VD, MT_ DDRV18, B1.8V, B3.3V, B1.5VA appear at C1037, C1045, C1042, C1024, C1041? > Check IC1019, IC1008, IC1009, IC1005 IC1007 Change the Main Ass’y
No Video (HDMI - Digital Signal)
Audio is normal but no picture is displayed on the screen.
Check the HDMI source
Check the MT8226
This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.
Does the signal appear at R3400~R3407? > Check JA3001, CN3003_NSIDE, HDMI cable.Change the HDMI cable. Change the main PCB assembly
Does the digital data appear at output of R5094~R5101, R5163, R5164, D5003, D5004, D5006? > Check IC3012 Change the main PCB assembly
Does the digital data appear at output of RA5070~RA5075? > Check IC5004 Change the main PCB assembly
Does the digital data appear at output of RA6074~RA6076, RA6078~RA6080, R6082_P, R6083_P, R6086_P, R6087_P? > Check IC6001_FBE Change the main PCB assembly.
No Sound
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..
Does the signal appear at R2002 ~ R2007 (PC, AV(Side AV), COMP1/2, DVI), R5094 ~ R5101 (HDMI)? > Check IC2002 or Side-AV. Change the main PCB ass’y or side-AV assembly.
Does the digital data appear at R2041, R2044~R2046? > Check IC5004 Change the main PCB assembly.
Does the signal appear at  L2001, L2002?  > Check IC2004 Change the main PCB assembly.
General Alignment Instuction
1.Usually, a color LCD-TV needs only slight touch-up adjustment upon installation. Check the basic characteristics such as height, horizontal and vertical sync.
2.Use the specified test equipment or its equivalent.
3.Correct impedance matching is essential.
4.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.
5.Connect the TV only to an AC power source with voltage and frequency as specified on the backcover nameplate.
6.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.
7.To protect against shock hazard, use an isolation transformer.
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
EU/Asia  > INFO >  MENU > Mute > Power On
How to Access Service Mode
Using the Customer Remote
Turn the power off and set to stand-by mode
Press the remote buttons in this order; INFO - MENU - Mute -POWER ON 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.
Hotel Interactive Mode
Entering Hotel Interactive Mode
Under power on condition, INFO + MENU + 0 + 1 + EXIT
Stand Alone Hotel Mode
Entering Stand Alone Hotel Mode
Under power on condition, MUTE + 1 + 1 + 9 + ENTER
Method of Color Calibration (AV)
1) Apply the PAL Lattice (N0. 2) pattern signal to the AV IN 1 port
2) Press the Source key to switch to “AV1” mode
3) Enter Service mode
4) Select “2 WB Adjust” menu.
5) Select the “Calibration” menu
6) Select the “AV Calibration” menu.
7) In “AV Calibration Failure” status, press the “ > ” key to perform Calibration.
8) When Calibration is complete, it returns to the high-level menu.
9) 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 “2 WB Adjust” menu.
5) Select the “Calibration” menu
6) Select the “DTV Calibration” menu.
7) In “DTV Calibration Failure” status, press the “ > ” key to perform Calibration.
8) When Calibration is complete, it returns to the high-level menu.
9) You can see the change of the “DTV 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 “2 WB Adjust” menu.
5) Select the “Calibration” menu
6) Select the “PC Calibration” menu.
7) In “PC Calibration Failure” status, press the “ > ” key to perform Calibration.
8) When Calibration is complete, it returns to the high-level menu.
9) 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 “2 WB Adjust” menu.
5) Select the “Calibration” menu
6) Select the “HDMI Calibration” menu.
7) In “HDMI Calibration Failure” status, press the “ > ” key to perform Calibration.
8) When Calibration is complete, it returns to the high-level menu.
9) You can see the change of the “HDMI Calibration” status from Failure to Success.
Posted By: FRANK at 05:31
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