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 !

Tuesday 18 August 2020

EXAMPLES OF TV LCD PANEL FAILURES THAT CAN BE REPAIRED

1 - Double or wavy image

















2 - Vertical line, lines, or colored / non-colored polylines (bars) covering a certain area:




The important thing with this type of failure is that the lines or bars completely cover the screen from top to bottom. If the line or bar does not fill the screen, it cannot be repaired.




3 - Horizontal line or lines:
















If there is a COF (chip-on-film - integrated film strip) on the right or left of the defective panel, this fault can be repaired. If there is no ear, the dead line is repaired by combining it with a solid line by laser intervention, but if the number of lines is high, it may not be repaired.





4 - T-con induced panel failure examples:



The screen showing negative (color inversion) or the test bars on the screen is caused by neither panel nor tcon.


5 - Repairable failure examples caused by panel lighting:


Panel illumination is the cause of some of the screen being dark, the screen turning blue, or one area of the screen being brighter than other areas.
These examples are for informational purposes only. Consult your TV repair shop for troubleshooting.

Posted By: FRANK at 05:20
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