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 !

Wednesday 13 March 2019

PANASONIC TX-20LA80F - TX-20LA80FS HOW TO ENTER SERVICE MODE (POWER SUPPLY CIRCUIT )

PANASONIC TX-20LA80F - TX-20LA80FS

HOW TO ENTER SERVICE MODE  (POWER SUPPLY CIRCUIT ) 

SERVICE MODE AND POWERS SUPPLY CIRCUIT 


Adjustment Method
How to enter Service
• Set the Bass to maximum position, set the Treble to minimum position then keep pressing the INDEX button on the remote control and press the down button (-/v) on the TV set, this will place the TV set into the Service Mode 1.
Key Command
• Press the RED / GREEN buttons to step up / down through the functions.
• Press the YELLOW / BLUE buttons to alter the function values, to alter White Rasters use +/- buttons
• Press the OK button after each adjustment has been made to store the required values.
• To exit the Service Mode, press the "N" button.
White Balance Adjustment
Instrument
• Remote Control
• LCD WB meter (Minolta CA-210 or equivalent) Condition
• Switch on the TV Set. Enter Service1. Step down to Highlight line and keep the aging time more than 20 minutes.
Procedure
• After aging time above set White Raster No.12 for Highlight and No.4 for Lowlight Press the OK button to store.
• Put Minolta Sensor to the center of the LCD Panel with 25mm gap between Minolta Sensor and LCD Panel. Adjust "x" and "y" values by changing Red and Blue values.
• Press OK button to store setting.
POWER SUPPLY CIRCUIT
PCB LAYOUT 
CLICK ON THE IMAGES TO ZOOM IN
Posted By: FRANK at 02:30
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