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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Tuesday 12 February 2019

SONY - OPTICAL ASSEMBLY CLEANING PROCEDURE _ REAR PROJECTION TV_ HOW TO CLEAN THE OPTICAL ASSEMBLY OF SONY PTV.

SONY - OPTICAL ASSEMBLY CLEANING PROCEDURE _ REAR PROJECTION TV_ How to clean the optical assembly of Sony PTV.





  • With the optical assembly removed from the set, remove the two screws from the top plastic shield.  

  • Remove 4 screws from the plastic shield, which is below the shield previously removed.

  • The unit will now look like this.

  • Carefully lift up the brown tabs that holds the ribbon cables in place.  With the brown tabs in the 'UP' position remove the ribbon cables by slowly pulling them straight out.  

  • Once the 3 ribbon cables have been removed, remove the prism and lens ass'y.  Remove 8 screws.

  • Carefully hold the lens ass'y by front, and pull slowly making sure to guide the ribbon cables under the plastic bar.

  • With ass'y removed carefully clean off the LCD panels.  This can be done by using filtered air and a very soft brush, if necessary, to remove the dust.  Never touch the LCD panels with your fingers, as this will leave a mark.  Make sure to clean both sides of the panels as well as the opening in which the prism block was removed from.  {DO NOT take this module any farther apart.  DO NOT adjust the screws holding the panels in place or the screws / hex nuts near the lens, as the alignment will be disturbed.}



Carefully re-assemble the optical ass'y and re-install it into TV.  Make sure the LVDS cables are connected to their proper plugs.