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 !

Wednesday, 13 March 2019

SONY KDL-46EX729 3D LED LCD SERVICE MODE AND POWER SUPPLY CIRCUIT

SONY KDL-46EX729 3D LED LCD SERVICE MODE AND POWER SUPPLY CIRCUIT


SONY KDL-46EX729

SERVICE MODE AND POWER SUPPLY CIRCUIT

ENTERING SERVICE MODE

1) Turn on the main power switch to place this set in standby mode.
2) Press the buttons on the remote commander as follows, and entering service mode.

DISPLAY  à  Channel 5  à Volume à TV  à  POWER

3) Service mode display.

Note: First of all, when you enter Service Mode, you can see “Digital” service mode.
Whenever you press “OPTIONS” or “JUMP” on remote, each service mode is changed.
“Digital” -> “Chassis” -> “VPC”

4) How to use the remote commander

Function
The flow of control
Service mode on
<Test>+<TV>/<Display><5><Vol Up><Powe
Service mode off
<Other> / <Power off + on>
Change module
<Jump> / <Option>
Write data
<Mute> + <0>
Execute
<10 or 0>
Read data
<9> + <0>
Test reset
<8> + <Mute> + <0>
Data up / down
<3>/<6>
Category up / down
<2>/<5>
Item up / down
<1>/<4>




5) After entering service mode, then turn off the power switch.
WHITE BALANCE ADJUSTMENT

Note: Please execute this adjustment if necessary. Change Data of“VPC”service mode. (“006 WB”category)
a. Press “1” or “4” on remote to select WB adjustment menu.
b. Change data by pressing “3” or “6”. Each range of these items is 0~255.
c. Press “mute”＋”0” on remote to save the data.
“SERVICE” comment is changed to “WRITE”, indicating writing process.
d. After a while, “WRITE” comment returns to “SERVICE”, which means writing process is done.
RESTORE WHITE BALANCE / GAMMA ADJ-DATA TO B BOARD

Note:Please apply after USB-DL when B board is replaced. Change Data of“VPC”service mode.
a. Select“010 DATA_COPY”category by pressing “2 / 5” on remote.
b. Change data from “0” to “1” by pressing “1 / 4” onremote.
c. Wait until data is changed from 1 to 3.
d. When data is changed from 1 to 3, restoring process is finished.
e. In case data is changed from 1 to 2, keep default setting. (No more process is needed).
VCOM ADJUSTMENT(IMPORTANT – Only for S-LCD 60Hz Panels)
Note: Please execute this adjustment if necessary.
1) Change Data of“VPC”service mode.
a. Select“002 VCOM”category by pressing “2 / 5” on remote.
b. Select “000 ENABLE” item by pressing “1 / 4” on remote.
c. Change ENABLE from “0” to “1” to enable VCOM adjustment.
d. Select“002 VCOM”category by pressing “2 / 5” on remote
e. Select “001 ADJUST” item by pressing “1 / 4” on remote.
f. Change data by pressing “3 / 6” on remote controller.
g. Finish the adjustment when the picture seems OK.
Attention:
-Every time the data changed by pressing “3 / 6” Key, the VCOM pattern will display for 5s and in the mean time OSD will disappear, After the 5s period, VCOM pattern will disappear and OSD will display again. The 5s time can be adjust by data change.
-If pressing the “3/6” key again during the 5s period, the VCOM pattern display time will be extended to another 5s.
SAVE CHANGING DATA
1) Change Data of“Chassis”or“VPC”service mode
2) Write data for“Chassis”or“VPC”service mode
a. Press “Mute” on remote.
It shows green “SERVICE” changes to green “WRITE”.
b. Press “0” or “enter” on remote. Green “WRITE” changes to red “WRITE”. It indicate writing is processing.
c. After a while, red “WRITE” changes to green “SERVICE”. Writing process is done at this point.
3) TV reboot is necessary for applying data change.
HANGE DATA

Note: “Digital” service mode don’t have to Save. (except“002 MODEL” and “005 CHAPRESET” category)
1) Change Data of“Digital”service mode. (except“003 DIG_SRV_MODE” category)
a. Press “2 / 5” on remote to select (up / down) category.
b. Press “1 / 4” on remote to select (up / down) Item.
c. Press “0 / 10” on remote to select item.
2) Change Data of“Digital”service mode. (“003 DIG_SRV_MODE”category)
“003 DIG_SRV_MODE” is one category of “Digital” service mode.
Please note because this operation is special.

a. Press “2 / 5” on remote to select “003 DIG_SRV_MODE”.
b. Press “1 / 4” on remote to select (up / down) Item.
c. Press “0 / 10” on remote to select item.
d. Press number key “1”~”9” directly. “*” stamp move.
e. Press “12 / enter / select” to decide and advance next step. Press “return”,
3) Write data for“Digital”service mode. (“002 MODEL”category)
Note: This procedure operation, when replaced the B board.
Note: Do not write a wrong segment or destination information in Product ID.
When the wrong setting is written, TV may not operate.
000 SEG -----------------Select JDM code information
001 DEST ---------------Select destination information
002 MODELNAME ---Select model name
004 SERIAL ------------ Can be set only once for the new board
a. Change data for each model.
b. Press “Mute”, “0” on remote sequentially.
It shows red “WRITE”. It indicate writing is processing.
c. After a while. Red “WRITE” disappears. Writing process is done after a while.
SET TO SHIPPING CONDITION

How to do shipping condition.
a. Move to“Digital”service mode.
Press “8” on remote.
It shows green “SERVICE” changes to green “RST-”.
Press “mute” on remote.
Added green “EXE” after green “RST-” .
d. Press “0” on remote. Green “EXE-RST” changes to red “EXE-RST”. It indicate writing is processing.
After a while, red “EXE-RST” changes to green “SERVICE”.
And all LED lights.
Writing process is done at this point.
<Another way>
You can set to shipping condition w/o entering Service Mode.
-> “Cursor Up” on remote + “Power Key” on Front panel.
CHANGE THE EMITTER OUTPUT LEVEL
Note: To reduce the emitter LED output power strength.
Change Data of“VPC”service mode
a. Select“005 TD”category by pressing “2 / 5” on remote.
b. Select “000 EMIT_STR” item by pressing “1 / 4” onremote.
c. Change data from “0” to “1” by pressing “3 / 6” on remote.
0: Strong (Default)
1: Weak
d. Save by pressing “Mute” + “0” or ”10” & Reboot
HDD REC SETTING

1) Key Copy
Change Data of“Digital”service mode
a. Select“003 DIG_SRV_MODE”category by pressing “2 / 5” on remote.
b. Select “006 REC SETTING” item by pressing “1 / 4”on remote.
c. Press “0” or “10” to go to detailed REC Setting screen.
d. Press “1” to select “Key Copy” item.
e. Press “Enter” or “12” twice to execute the command.
f. If OK, show the message “Key Copy OK”
If NG, show the message “Key Copy NG (= xx )”
2) HDD Re-Register
a. Press “2” to select “HDD Re-Register” Item.
b. Press “Enter” or “12” twice to execute the command.
c. If OK, xx= x+1
If NG, xx=x

POWER SUPPLY CIRCUIT 
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Posted By: FRANK at 03:28
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