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

EMERSON EWL20S5 SEREVCIE MODE AND POWER SUPPLY CIRCUIT

EMERSON EWL20S5 SEREVCIE MODE AND POWER SUPPLY CIRCUIT

Category : Lcd Television Repair  

SERVICE MODE

1. Use the service remote control unit.
2. Turn the power on. (Use main power on the TV unit.)
3. Press [SLEEP] button on the service remote control unit. Version of micro computer will be displayed on the LCD or display. (Ex: 0008GP- 0.08)
Initial Setting

General: Enter the Service mode

Set the each initial data as shown on table  below

Initial Data
Item
Button
(on the service
remote control)
Data
Value
BRT



[MENU]à[1]
128
CNT
124
CLR-R
64
CLR-B
64
TNT
128
V-TNT
128
SHR
112
S-BRT


[MENU]à [2]
128
S-CNT
128
S-CLR-R
64
S-CLR-B
64
S-TNT
128
S-SHR
112
C-BRT


[MENU]à[3]
128
C-CNT
128
C-CLR-R
64
C-CLR-B
64
C-TNT
128
C-SHR
112
D2-BRT


[MENU]à[5]
133
D2-CNT
140
D2-CLR-R
74
D2-CLR-B
74
D2-TNT
128
D2-SHR
112
D3-BRT


[MENU]à[6]
126
D3-CNT
138
D3-CLR-R
64
D3-CLR-B
64
D3-TNT
128
D3-SHR
112
DR(C/D1)
[VOL V ]à [4]
176
C-DR(C/D2)
157
DB(C/D1)
[VOL V ]à[6]
175
C-DB(C/D2)
152




Flicker Adjustment

1. Enter the Service mode.
2. Press [2] button on the remote  control unit.
3. If Flicker Adjustment is not fit,.
4. Press [CH UP/ DOWN] buttons on the remote control unit so that flash stops.
White Balance Adjustment

Purpose: To mix red, green and blue beams correctly for pure white.
Symptom of Misadjustment: White becomes bluish or reddish
Note: Use service remote control unit
1. Operate the unit for more than 20 minutes.
2. Input the White Purity (APL 80% or APL 20%).
3. Set the color analyzer to the CHROMA mode and bring the optical receptor to the center on the LCD-Panel surface after zero point calibration as shown above.
Note: The optical receptor must be set perpendicularly to the LCD Panel surface.
4. [RF/VIDEO1]
Enter the Service mode. Press “VOL DOWN” button on the remote control unit and select “C/D-1” mode.
[VIDEO2]
Enter the Service mode. Press “VOL DOWM” button on the remote control unit and select “C/D-2” mode.
5. [RF/VIDEO1]
When “x” value and “y” value are not within specification, adjust “DB (C/D1)” or “DR (C/D1)”. Refer to “1. Initial Setting.”
Note: “DB(C/D1)” or “DR(C/D1)” must be adjusted within ±0.01.
[VIDEO2]
When “x” value and “y” value are not within specification, adjust “DB(C/D2)” or “DR(C/D2)”. Refer to “1. Initial Setting.”
Note: “DB(C/D2)” or “DR(C/D2)” must be adjusted within ±0.01.
6. Turn the power off and on again. (Main power button on the TV unit.)
How to initialize the LCD television:

1. Turn the power on. (Use main power on the TV unit.)
2. To enter the service mode, press [SLEEP] button on the service remote control unit.
- To cancel the service mode, press [POWER] button on the remote control.
3. To initialize the LCD television, press [DISPLAY] button on the remote control unit.
4. Confirm "FF" indication on the upper right of the screen.
POWER SUPPLY CIRCUIT  Power supply board 
CLICK ON THE IMAGE TO ZOOM IN

INVERTER CIRCUIT 
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Posted By: FRANK at 03:25
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