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!

©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Monday, 4 February 2019

MITSUBISHI LT-55154 LT-40164 LT-46265 – LED BLINKING CODES, SERVICE MODE, SMPS SCHEMATIC, RESET PROCEDURE LCD FLAT PANEL HDTV

Mitsubishi LT-55154 LT-40164 LT-46265 – LED blinking codes, Service mode, SMPS schematic, reset procedure LCD FLAT PANEL HDTV

VLP43 Chassis LT-55154
VLP43+ Chassis LT-40164 LT-46164 LT-55164
VLP43++ Chassis LT-46265 LT-55265
Click on the pictures to zoom in
SET SCREEN SIZE
The same PWB-MAIN is used for different screen sizes within a chassis family. When a PWB-MAIN is replaced, the screen size must be set up. Failure to setup the correct screen size will result in poor picture performance.
1. Press the <MENU> <2-4-5-7> buttons.
The Service Menu will appear.
2. Press the <0> button.
The Data Selection Menu will appear.
3. Use the <Up|Dn> buttons to select “SET SCREEN SIZE” and press <ENTER>.
4. Use the <Up|Dn> buttons to toggle to select the correct screen size and chassis of the model being serviced.
5. Press <ENTER>.
6. The Screen Size indication will flash Red momentarily to indicate the selection has been saved. Press <EXIT> or <MENU> to exit.
Screen Size Menu
<MENU> <2-4-7-0> <0> “SELECT SCREEN SIZE”
SELF DIAGNOSTICS
A blinking red and yellow Status LED will indicate an Error Code that can help determine the cause of a circuit failure.
> The number of Red blinks indicates the value of the MSD (tens digit) of the Error Code.
> The number of Yellow blinks indicates the value of the LSD (ones digit) of the Error Code.
Example: If the Error Code is “27”, the LED will continuously blink Red two times, followed by blinking Yellow seven times.
To perform a System Reset, press and hold the side Power button for 10 seconds. Or, unplug the set for 10 seconds then restore power.
Error Codes, descriptions and the most likely cause of failure are listed below:
The Error Code Log may be helpful to retrieve the code for an error that occurred in the past. To access the Error Code Log: Press <MENU> <3-5-6-4>
The Error Code Log is intended as a reference tool and is not meant to be used as a final determination
of a defective part.
SOUND PROJECTOR TRANSDUCER TEST
This procedure will test will each of the TV’s speakers individually using an internal white noise generator.
1. Press the <MENU> button on the remote control. The Customer Menu will appear.
2. Press the <2-4-5-7> buttons. The Service Menu will appear.
3. Press the <0> button. The Data Selection Menu will appear. See below.
4. Use the <Up/Dn> buttons to select “SOUND PROJECTOR TRANSDUCER TEST” and press <ENTER>. The
Sound Projector Transducer Test Menu will be displayed. A tone will automatically cycle from one speaker to the next as indicated on screen. Follow the instructions to manually cycle the tone.
5. Press <EXIT> or <MENU> to exit.
NOTE: The VLP43 chassis has 12 speakers. The menu will show 16 speakers with 4 grayed out.
The VLP43++ chassis includes left and right full range speakers.
SMPS [Power supply board] circuit diagram
RESET | INITIALIZATION
Many customer generated symptoms, intermittent symptoms or no symptom found can be resolved by using the various Reset and Initialization options. Before visiting the customer’s home ask the customer 1st perform a System Reset by pressing the <POWER> button on the front panel and holding it for 8 seconds. If this does not resolve the issue, they can perform an A/V Reset by pressing the <INPUT> + <VOL DN> buttons on the front panel at the same time and holding for 10 seconds. Then, if necessary, perform a user level Initialization by pressing <MENU><1-2-3> <ENTER> with the remote. The customer should be made aware when settings and/or options will be reset. For more information, see the chart below
BACKUP | RESTORE ISF SETTING
VLP43+ and VLP43++ models - If the customer has calibrated the ISF (ADV) video settings, the settings data
can be backed up on a USB memory device. If the settings are lost due to a Reset or Initialization procedure,
PWB-MAIN replacement or other reasons, the settings data can be restored.
Backup ISF Settings.
1. Insert a empty USB memory device into the USB slot.
2. Press the <MENU> button on the remote control. The Customer Menu will appear.
3. Press the <2-4-5-7> buttons. The Service Menu will appear.
4. Press the <0> button. The Data Selection Menu will appear.
5. Use the <TS> buttons to select “BACKUP AND RESTORE ISF SETTING” and press <ENTER>.
6 Use the <Up/Dn> buttons to toggle to "Backup ISF Settings to USB” (Default).
7. While "Backup ISF Settings to USB” is displayed, press <ENTER>. The screen will flash the message "Backup completed."
Restore ISF Settings.
1. Insert the USB memory device with the backup data into the USB slot.
2. Press the <MENU> button on the remote control. The Customer Menu will appear.
3. Press the <2-4-5-7> buttons. The Service Menu will appear.
4. Press the <0> button. The Data Selection Menu will appear. See above.
5. Use the <Up|Dn> buttons to select “BACKUP AND RESTORE ISF SETTING” and press <ENTER>.
6. Use the <Up\Dn> buttons to toggle to “Restore ISF Settings From USB.”
WARNING: DO NOT press <ENTER> while "Backup ISF Settings to USB" is displayed. The data on the USB will be overwritten and lost.
Posted By: FRANK at 02:24
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