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 10 April 2019

APPLE POWERBOOK G4 ALUMINUM 17 – HOW TO REPLACE THE LCD SCREEN

Apple PowerBook G4 Aluminum 17 – How to replace the LCD screen

Apple PowerBook G4 Aluminum 17
Remove the two 6.3 mm Phillips screws near the lower left and right corners of the display.
Removing these two screws may be difficult. It is helpful to open the display as much as possible for clearance to use a screwdriver. Also, a combination of #00 Phillips and small flathead screwdrivers along with a pair of tweezers may aid in removal.
The picture at left (rear panel already removed) shows the locations of the metal clips (shown in red) that snap on to the front display bezel. In the next few steps, you will use a small flathead screwdriver to release these clips from a ridge around the perimeter of the front display bezel.
When prying in the following steps, be sure not to damage the antenna cables that run around the perimeter of the front display bezel.
Insert the flat end of a spudger between the rear display bezel and the plastic rim attached to the front display bezel near the lower right corner of the display.
Do not try to insert the spudger between the front display bezel and its plastic surround.
While carefully prying the rear display bezel away from the display assembly, use a small flathead screwdriver to pry the small steel clip nearest the bottom right corner of the display away from the edge of the front display bezel.
Repeat the above procedure until you've released all the clips along the right side of the display.
Slightly lift the recently-freed corner of the rear display bezel to separate the clips with a spudger along the span of the clutch hinges.
Insert the flat end of a spudger between the rear display bezel and the plastic surround of the front display bezel near the lower left corner of the display.
Carefully pry the rear display bezel away from the front display bezel to expose the metal clips along the left side of the display.
Repeat the previous procedure to release the clips along the left side of the rear display bezel.
Slightly lift the lower edge of the rear display bezel and push it toward the top edge of the display, releasing the clips along the top edge of the rear display bezel.
Remove the rear display bezel and set it aside.
If necessary, remove the tape covering the display inverter.
Carefully lift the display inverter board from the side nearest the display data cable connector.
The display inverter is an extremely thin circuit board that is easily broken. Do not excessively bend or twist it during removal.
Use your fingernails to pull the ears on both sides of the inverter cable connector away from its socket on the inverter board.
Carefully lift the display inverter out of the clutch cover.
Don't try to remove the inverter just yet. It is still attached via the backlight cables.
Use your fingers to pull the backlight connector away from its socket on the inverter board.
Remove the display inverter from the display assembly.
If present, remove the piece of tape covering the display data cable.
Pull the display data cable straight away from its socket on the LCD.
Remove the four 3.2 mm Phillips screws securing the left side of the
LCD assembly to the front display bezel.
Remove the four 3.2 mm Phillips screws from the top portion of the LCD assembly.
Remove the four 3.2 mm Phillips screws along the right side of the display.
Carefully peel the protective translucent shield off the antenna board.
If you damage this during disassembly, be sure to tape over any tears or cracks to avoid unintended shorting.
Use the flat end of a spudger to pry the the antenna cables straight up off their sockets.
Remove the single 2.5 mm Phillips screw securing the display data cable ground loop to the front display bezel.
Remove the two 10.3 mm T8 Torx screws securing the left side of the clutch hinges to the front bezel.
Remove the two 10.3 mm T8 Torx screws securing the center of the clutch hinges to the front bezel.
Remove the two 10.3 mm T8 Torx screws securing the right side of the clutch hinges to the front display bezel.
Press the display release button to release the top edge of the display from the upper case.
Carefully wiggle and lift the display assembly straight up off its positioning pins on the clutch hinges.
In the following steps, you will use a heat gun to soften the adhesive securing the metal LCD frame to the front display bezel. Heat guns have the capability of producing an extremely hot jet of air, so be sure not to overheat the LCD panel.
With the heat gun set to low, start by heating the front display bezel near the upper left corner of the display panel.
Insert a plastic opening tool between the metal LCD frame and the front bezel.
Be sure you are prying between the metal LCD frame and the front bezel, not between the metal LCD frame and the LCD. It may be necessary to reheat this area until the adhesive yields enough to insert the edge of a tool.
Use the flat end of a metal spudger to gently pry up the adhesive securing the metal LCD frame to the front bezel, taking special care not to scratch the LCD panel.
While it is still inserted between the metal LCD frame and the front bezel, run the edge of your metal spudger along the top edge of the display to separate the adhesive securing the two pieces together, heating the area you are working on with a heat gun as necessary.
If the adhesive is hard to separate, use a heat gun to lightly heat the area you are working on.
Continue running the edge of your metal spudger between the LCD frame and the front bezel until the right, bottom, and left sides of the LCD are free.
Lift the LCD by its top edge only. Lifting the LCD by its lower edge will damage the backlight cables. Lift the LCD out of the front display bezel, using your metal spudger to release any adhesive if necessary.
With the LCD partially removed from the front bezel, carefully push the backlight connector through its tunnel in the front bezel.
Posted By: FRANK at 04:15
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