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, 20 March 2019

MITSUBISHI CRT PTV - VS-50111 / VS-60111 / WS-48311 / WS-55311 / WS-55411 / WS-65311 / WS-65411 / WS-73411 -LENTICULAR SCREEN AND FRESNEL LENS - REMOVAL & REFITTING

MITSUBISHI CRT PTV - VS-50111 / VS-60111 / WS-48311 / WS-55311 / WS-55411 / WS-65311 / WS-65411 / WS-73411 - LENTICULAR SCREEN AND FRESNEL LENS - REMOVAL & REFITTING

REMOVAL OF THE LENTICULAR SCREEN AND FRESNEL LENS [VS-50111 WS-55311 VS-60111 WS-65311]
  • Wear gloves when handling the Lenticular Screen and the Fresnel Lens.
  • This prevents cuts and finger prints.
  • Do not place the Fresnel Lens in the sun.
  • This may cause fire and heat related injuries.
  1. Remove the screen assembly as shown in the Cabinet Disassembly procedure.
  2. Remove the Screen Holder by removing screws (a).
  3. Slide the Lenticular Screen and Fresnel Lens from the Screen Frame.
  4. When separating the Lenticular Screen from the Fresnel Lens, be caution while prying the Screen and Lens apart. Use a slot type screw driver, and remove the pressure sensitive, double sided tape.
WS-55411 WS-65411 WS-73411
  • Remove the screen assembly as shown in the Cabinet Disassembly procedure.
  • Remove the Screen Frame top section by removing 4 screws (a).
  • Carefully grasp the Lenticular Screen and Fresnel Lens combination and pull upward and out of the Screen Frame Assembly.
  • When separating the Lenticular Screen from the Fresnel Lens, be careful while prying the Screen and Lens apart. Use a slot type screw drive, and remove the pressure sensitive double sided tape.
WS-48311
  • Remove the screen assembly as shown in the Cabinet Disassembly procedure.
  • Remove the Top, Bottom and Side Holder Screens.
  • Carefully lift the Lenticular Screen and Fresnel Lens combination from the Screen Frame Assembly.
INSTALLATION
  • Apply double coated tape (Part # LENS-TAPE) along the top front edge of the Fresnel Lens as shown in Figure.
  • Place the Fresnel Lens on top of the Lenticular Screen and apply pressure at the top edge to bond them together.
  • Reverse the disassembly procedure for that model to install the screens in the screen frame.