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

JVC LT-47DV1BJ - LT-47DV1BU SERVICE MODE POWER SUPPLY CIRCUIT

JVC LT-47DV1BJ - LT-47DV1BU SERVICE MODE POWER SUPPLY CIRCUIT





LCD TV


SERVICE MODE POWER SUPPLY CIRCUIT


HOW TO ENTER THE SERVICE MODE
(1) Press [INFORMATION] key and [MUTING] key on the remote control unit simultaneously to enter the SERVICE MODE SCREEN.
(2) In the SERVICE MENU, press the [1] key to display ADJUSTMENT MODE SCREEN.

HOW TO EXIT THE SERVICE MODE
Press the [BACK] key to exit the Service mode.

ADJUSTMENT MODE
This mode is used to adjust the VIDEO CIRCUIT

HOW TO ENTER THE ADJUSTMENT MODE

When the SERVICE MENU SCREEN of SERVICE MODE is displayed, press [1] key to enter the ADJUSTMENT MODE.

1) COLOUR TEMP.

H : COOL
M : NORMAL
L : WARM

(2) SETTING ITEM NAME
Setting item name are displayed.
(3) SETTING ITEM NO.
Setting item numbers are displayed..

(4) SETTING VALUE (DATA) The SETTING VALUE is displayed.

CHANGE AND MEMORY OF SETTING VALUE SELECTION OF SETTING ITEM
• [FUNCTION UP/ DOWN] key.
For scrolling up / down the setting items.
CHANGE OF SETTING VALUE (DATA)
• [FUNCTION LEFT /RIGHT] key.
For scrolling up / down the setting values.
MEMORY OF SETTING VALUE (DATA)
Changed setting value is memorized by pressing [MUTING] key.

MONITOR MODE
This mode displays the signal status of channel that has been selected now.
SYSTEM CONFIGRATION
This mode selects the function that can be used by the user menu.
SOFTWARE UPDATE
This mode updates the version of software.
I2C STOP MODE [NO DISPLAY]
This mode is unused.
EDID WRITE PROTECT
This mode sets memory with EDID data to write protection.
HDMI_EQ SETTING
This mode switches HDMI1.3 compliant and AWG28.
SOFTWARE VERSION CHECK
This mode displays the version of microcomputer software and
SOUND CALIBRATION SETTING
This mode sets SOUND CALIBRATION.

POWER SUPPLY CIRCUIT 


CLICK ON THE IMAGES TO ZOOM IN
Posted By: FRANK at 10:45
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