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 !

Friday 1 March 2019

SYMPHONIC LCD BD20 – HOW TO ENTER SERVICE MODE – SMPS AND BL INVERTER CIRCUIT DIAGRAM – INITIALIZATION – FLICKER ADJUSTMENT

Symphonic LCD BD20 – How to enter Service Mode – SMPS and BL Inverter Circuit Diagram – Initialization – Flicker adjustment

Symphonic LCD-B20D6 L4633BD 20 inch COLOR LCD TELEVISION
HOW TO INITIALIZE THE LCD TELEVISION
To put the program back at the factory-default, initialize the LCD television as the following procedure.
1. Turn the power on. (Use main power on the TV unit.)
2. To enter the service mode, press [STANDBY], [2], [7], [1], and [MUTE] buttons on the remote control unit in that order within 5 seconds.
To cancel the service mode, press [STANDBY] 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.
How to Set up the Service mode
1. Turn the power on. (Use main power on the TV unit.)
2. Press [STANDBY], [2], [7], [1], and [MUTE] buttons on the remote control unit in that order within 5 seconds.
To cancel the service mode, press [STANDBY] button on the remote control.
Initial Data
SMPS (Power Supply regulator) & Back-light inverter schematic (Circuit Diagram)
Fixed Voltage (or Auto voltage selectable) power supply circuit is used in this unit.  If Main Fuse (F601) is blown, first check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components in the power supply circuit to fail.

Flicker Adjustment
1. Enter the Service mode.
2. Press [2] button on the remote control unit.
If Flicker Adjustment is not fit, the screen becomes the following.
4. Press [CH.Up / Dn] buttons on the remote control unit so that flash stops.
Click on the pictures to zoom in
Posted By: FRANK at 03:41
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