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 !

Tuesday, 12 March 2019

SAMSUNG UN46C9000ZF - UN55C9000ZF SERVICE MODE AND LED DRIVER

SAMSUNG UN46C9000ZF - UN55C9000ZF SERVICE MODE AND LED DRIVER


SAMSUNG UN46C9000ZF - UN55C9000ZF 

3D EDG LED TV

SERVICE MODE AND LED DRIVER 

Chassis : N99A

UC9000 PD BOARD DIAGNOSIS

1. General PD board Diagnosis
Disconnect the wire between PD board and Main board.
Short Circuit 22Pin and 24pin of CNM801 ▶ If the BLU on , we can consider PD board is acting correctly.
2. LED Driver output diagnosis
Measure voltage at CD477 or CD437 which are criteria for judgement
Measure voltage at CD403 or CD418 which are criteria for judgement

General Alignment instruction
1. Usually, a color LED-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.
SERVICE 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

How to Access Service Mode
Using the Customer Remote
1. Turn the power off and set to stand-by mode
2. Press the remote buttons in this order; MUTE-1-8-2-POWER ON to turn the set on.
3. The set turns on and enters service mode. This may take approximately 20 seconds.
4. Press the Power button to exit and store data in memory.
- If you fail to enter service mode, repeat steps 1 and 2 above.
Using the Factory Remote
1. Press the 'info'+'factory' key of your Factory Remote.
2. The set enters service mode right away.
Buttons operations withn Service Mode
Menu >  Full Menu Display/Move to Parent Menu
Direction Keys UP / DOWN  >  Item Selection by Moving the Cursor
Direction Keys RIGHT / LEFT  > Data Increase / Decrease for the Selected Item
Source  > Cycles through the active input source that are connected to the unit.
How to Access ‘EDID SUCCESS’ Mode
At initial SERVICE MODE DISPLAY state, you’ll see ‘EDID SUCCESS’.
- If not, go to
Control  > EDID
And follow the procedure.
1. Set ON at EDID ON/OFF menu.
At 2. EDID WRITE ALL menu, press RIGHT key of the remote control. After few seconds Success will appear.
3. If Failure appears, remove the PC cable and HDMI cable that connected to TV. And try it again.
4. If the problem still exists, go to HDMI EDID Ver menu, and change the HDMI version to HDMI 1.2 or HDMI 1.3.
5. Change the Main Board if same problem occurs.

Posted By: FRANK at 02:39
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