Master Electronics Repair !

Welcome to Master Electronics Repair! website.Here you will find:Service Modes, Circuit Diagrams,Service manuals, Firmware Update procedure, Disassemble procedure, Universal remote control setup codes, Troubleshooting, Diagnosing, Measuring, and more.... of many of LCD/LED TV/Displays,others various electronic apparates,trough many technical notes and tips/tricks to help repairing/fixing Troubles/ faults,for electrical technicians.This site helps you to save the Earth from electronic waste!

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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Note that if you don't find what you searched for, try it after a period of time; the site is a never ending job !

..............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 16 March 2019

SAMSUNG _ CW29Z306VBXXEC TROUBLESHOOTING - _SERVICE MODE

SAMSUNG _ CW29Z306VBXXEC

TROUBLESHOOTING - _SERVICE MODE

TROUBLESHOOTING.

In case of a power failure or abnormal screen, check the following items.

Check that the power cord is correctly connected to a 220V wall outlet.
Check that the Master Switch has been pressed.
Check that the transmitter is turned on.
Check that transmitter device selection is set to TV.
Check that the signal cable is properly connected.
Check that channel setting has been set.

The Main Board has Power part which supplies power to Deflection and Feature Box.

The Feature Box receives all signal inputs, the signal-processed signal is sent to CRT Ass'y.

The Deflection Board controls deflection and Focus.

Troubleshooting by Modules

Enter Service Mode: (In SET Stand-By Status, if you press "Info" à"Menu" à"Mute" and "Power" button in sequence on the remote control, the screen is turned on and the Service Mode screen appears.)
Check if the System Board is out of order. Press OPTION àTEST PATTERN à Right direction key: The COLOR BAR, BLACK pattern and WHITE pattern are displayed on the screen. If the pattern is not displayed or is displayed abnormally, the DNIe IC (SPD41) or the System Board is out of order.
Check if the Power Board, which supplies power to the System Board and the Deflection Board, is out of order. If you cannot turn the screen on by pressing the POWER ON/OFF button or the screen repeatedly turns on and off when pressing the POWER ON/Off button, check if the Power Board is out of order.
Check if the Deflection Board is out of order.
When the screen is not properly displayed and the left or right side of the picture is shrunk, or the top or bottom of the screen is expanded or shrunk, check if the Deflection Board is out of order.

Problem	Solution
The power does not turn on.	Check if the power cord is properly connected
Air broadcasting does not work	Check if the antenna is properly installed.
Cable broadcasting does not work.	Subscribe to a local cable-broadcasting firm and get support.
Satellite broadcasting does not work.	Install a satellite antenna (Parabola) and connect it to the TV.
The remote control does not work	Press the Select Device button to select the TV or external device. Replace the battery of the remote control with a new one. Insert the battery making sure the polarity (+,-) is correct. Check if the angle or the distance is sufficient, or if there is any interference between the product and the remote control. Make sure the user has pressed the correct button. To avoid direct sunlight to the receiving panel of the TV, remove any indoor lighting or change the location of the TV. Check if the power switch at the back left of the TV is turned on.
Cannot change the channel with the remote control.	Press the Select Device button to select the TV. Change the channel using the remote control of the cable or satellite receiver.
Cannot select an A/V channel.	Press the TV/AV button and check if the AV item is grayed out. When the AV item is grayed out, you cannot select an A/V channel. Check if the connector is properly connected
Cannot select a menu.	Check if the menu is grayed out. If a menu is grayed out, it cannot be selected.
The screen is black and there is no sound	Check if the power cord is properly connected. Turn on the power. Select an AV channel that corresponds to the external device
Only the screen is blank/it is dark or too bright	Adjust the screen brightness.
The screen is blue/the external channel is not displayed.	Check if the connector is properly installed. Select an AV channel that corresponds to the external device.
The screen overlaps (double/triple).	Check if the antenna is properly installed. Adjust the position, angle or direction of the antenna
The screen is snowy or unclear. The picture quality gets worse when it is windy	Check if the antenna has been bent or moved by the wind. Check the antenna for its lifetime. (Normally 3 - 5 years, 1-2 years near the coast)
Dotted or semi-dotted lines are displayed on the screen.	Install the antenna as far away from the road as possible.
The screen is black and white.	Adjust the color density. Check if the connector is properly installed
The colors of the screen are odd/strange.	Adjust the color tones.
Unusual lines appear on the screen.	Keep the antenna away from the power cord or connectors if possible
Unusual lines appear on the screen when watching or recording to video.	Keep the video player as far away from the TV as possible.
There is no sound.	Increase the volume. Press the Mute button.
The sound is very low.	Increase the volume. Set the auto volume control to ON.
There is a lot of noise	Keep the antenna away from the power cord or connectors if possible
The selected language does not appear	Press the Multiplex button to select the TV.
There are no channels available.	Check if the antenna is properly installed. Press the Auto Channel button to store channels. Contact your local broadcasting service station.
Some channels are not available.	Adjust the position, angle or direction of the antenna. Activate the Reception Sensitivity Boost feature. Contact your local broadcasting service station. Use the number keys to select a specific channel and press Store/Clear to memorize it
Only the UHF (14-69) channels are not available.	Check if the antenna is able to receive UHF signals.
The TV makes a noise as if Something is dropping inside.	This noise may occur when the plastic material inside the TV expands or contracts according to the seasonal temperature or humidity. This is like the noise from a furniture/cabinet/sink unit, and there is no need for concern.

Troubleshooting by Checksum

Diagnosis of trouble by the checksum is neither reliable nor convenient. You can only use the checksum of the current direct-view TV to determine whether the software is corrupted or not. The Checksum value is determined according to the version of the software loaded on the set. Therefore, you can determine whether the software has been properly downloaded, if you know the correct checksum for that version of the software.

You can check the checksum according in the following order.

Factory Mode à Checksum à Right Button à Calculate Checksum à Output Checksum (e.g. 0xab2b)

Checksum Examples

T_COREOAKR1_1010 : checksum = 0xab2b

T_COREOAKR1_1014 : checksum = 0x4faa

Power LED	Description
Light is off	This happens when the Master Switch is not pressed or the power cord is disconnected
Light is ON	This happens when the power cord is connected and the power switch is pressed. If you cannot set the power switch on by pressing it, check the power switch Ass'y
Light blinks	If you press the power switch of the transmitter or the channel key on the remote control when in St-BY status, the screen will be turned on. If the LED blinks and the screen is not displayed, check the connection between the Power and the System Board.