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

HOW TO ENTER SERVICE MODE SAMSUNG LCD MONITOR - SAMSUNG T220M - T200M LCD MONITOR TROUBLESHOOTING SERVICE MODE AND SOFTWARE UPDATE

How to enter service mode Samsung lcd Monitor - SAMSUNG T220M - T200M LCD MONITOR TROUBLESHOOTING SERVICE MODE AND SOFTWARE UPDATE

SAMSUNG T220M - T200M 

Troubleshooting
First Checklist for 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 cable connection or a connection is too loose.
- Check to see if the cables are connected according to the connection diagram.
Check the power input to the Main Board.
Check the following circuits.
• No raster appears: Function PBA, Main PBA, I/P PBA
• 55V develop but no screen: Main PBA
• 5V does not develop: I/P PBA
Check the voltage in and out between the IP↔ Main Board, between the IP↔ Panel, and between the Main LVDS
Boards.
No Power
Symptom
Though the power swtich on, the LED power off and the screen is blank.
Checkpoints
Check Power cable.
Check whether the Lamp connector is connected correctly to the IP.
Check whether the power cable is connected correctly to the MAIN.
Check whether the Function cable is connected correctly to the MAIN.
No Video (Analog PC)
Symptom
Though the LED power turns on, the screen is blank when connecting the VGA cable.
Checkpoints
Even though the LED power turns on, the screen is blank when connecting the VGA cable.
Check the D-sub cable connections.
Check whether the LVDS cable is connected correctly to the panel.
Check whether the lamp connector of the panel is connected correctly to the IP board.
No Video (Digital-HDMI)
Symptom
The LED power turns on but the screen is blank when the DVI cable or HDMI cable is connected.
Checkpoints
Even though the LED power turns on, the screen is blank when connecting the DVI cable o
HDMI cable.
Check the DVI cable or HDMI cable connections.
Check whether the LVDS cable is connected correctly to the panel.
Check whether the lamp connector of the panel is connected correctly to the IP board.
No Picture (Tuner_CVBS)
Symptom
The LED power turns on but the screen is blank when the RF cable is connected.
Checkpoints
Even though the LED power turns on, the screen is blank when connecting the RF cable.
Check the RF cable connections.
Check whether the LVDS cable is connected correctly to the panel.
Check whether the lamp connector of the panel is connected correctly to the IP board.
No Picture (AV)
Symptom
The LED power turns on but the screen is blank when the Antenna Cable is connected.
Checkpoints
Even though the LED power turns on, the screen is blank when connecting the Antenna Cable.
Check the Antenna Cable connections.
Check whether the LVDS cable is connected correctly to the panel.
Check whether the lamp connector of the panel is connected correctly to the IP board.
No Picture (S-VIDEO)
Symptom
The LED power turns on but the screen is blank when the Antenna Cable is connected
Checkpoints
Even though the LED power turns on, the screen is blank when connecting the Antenna Cable.
Check the Antenna Cable connections.
Check whether the LVDS cable is connected correctly to the panel.
Check whether the lamp connector of the panel is connected correctly to the IP board.
No Picture (Component)
Symptom
The LED power turns on but the screen is blank when the Antenna Cable is connected.
Checkpoints
Even though the LED power turns on, the screen is blank when connecting the Antenna Cable.
Check the Ant enna Cable connections.
Check whether the LVDS cable is connected correctly to the panel.
Check whether the lamp connector of the panel is connected correctly to the IP board.
Service Instruction
1. Usually, a color TV-VCR 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 aganist shock hazard, use an isolation transform.
How to Access Service Mode
Entering Factory Mode
To enter “Service Mode” Press the remote -control keys in this sequence :
- If you do not have Factory remote - control
Power OFF > MUTE > 1 >8 > 2 > Power ON
White Balance - Adjustment
If picture color is wrong, check White Balance condition.
Equipment : CA210, Patten : Toshiba
Adjust W/B in Factory Mode
Sub brightness and R/G/B Offset controls low light region
Sub contrast and R/G/B Gain controls high light region
Source AV : PAL composite, Component : 1280*720/60Hz
HDMI[DVI] : 1280*720/60Hz
Conditions for Measurement
1. On the basis of toshiba ABL pattern : High Light level (57 IRE)
- INPUT SIGNAL GENERATOR : MSPG-925LTH
* Mode NO 2 : 744X484@60 Hz
NO 6 : 1280X720@60 Hz
NO 21 : 1024X768@60 Hz
* Pattern NO 36 : 16 Color Pattern
NO 16 : Toshiba ABL Pattern
2. Optical measuring device : CA210 (FL)
Please use the MSPG-925 LTH generator for model LE26M51B/LE32M51B/LE40M51B/LE46M51B.
Software Upgrade
How to Update Flash ROM
1. Install the Flash Downloader
Connector Set(D-SUB) and D-SUB cable to execute Program Update.
2. Flash Downloader program update
- Turn on the TV Set
- Click “Connect” icon on the MSTAR tool.
- Click “Read”, and Choose a new S/W.
- Click “Auto”, and “Run”
Posted By: FRANK at 03:33
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