Question about Televison & Video
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Posted on Jan 02, 2017
Seems the N-Channel MOSFET switch in the power supply is the culprit. NTE does not list a replacement part for this, so a sub is necessary (any N-Channel 600V MOSFET in same TO220F case should suffice). I have to look one up for mine.
Posted on Mar 25, 2009
Replacing the lamp assemblies is the last resort and you have to do very delicate disassmble or soldering works, see my albums. Basic LCD monitor troubleshooting guide: Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Please read below:
If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
Basic LCD monitor troubleshooting guide:
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Posted on Oct 27, 2010
Here are the eBay search results for your exact system model -
Posted on Sep 21, 2012
Let's talk for a minute..........
CCFL = Cold Cathode Fluorescent Lamp. (Bulb)
Similar to Fluorescent lighting used in homes, and businesses; but on a MUCH smaller scale.
Average thickness is 2mm. That is a little thicker than 1/16th of an Inch.
Or about the width of this capital -> O <-
Average length is almost as long, as the LCD screen is in height.
Just like it's larger 'cousins', it has Mercury in it. A POISON.
They break VERY easily, and have Mercury inside.
I usually suggest changing the LCD screen itself, to replace a Backlight.
If you are talking about price of LCD screen compared to a CCFL bulb.
There is NO price for a human life.
Okay, moving on..................
3) Service Manual:
HP Support > Compaq Presario CQ60-419wm Notebook PC >
Manuals download page, (User Guides)
Scroll down, click on the blue -
Compaq Presario CQ60 Notebook PC HP G60 Notebook PC - Maintenance and Service Guide
[Ignore if you are aware;
This is a PDF file. The computer you are using now has Adobe Reader on it, which uses PDF files.
After you click on the above file name it may take up to 30 seconds, before the first page comes up.
(The PDF file will not show until fully downloaded )
Go to the top left corner, and click on the small square icon -
Becomes two small square icons.
Show Thumbnails on the left, Show Document Outline on the right.
Click on Show Document Outline to see the Bookmarks menu.
The Zoom In icon ( + ) at the Top, increases the view size when you click on it.
The Zoom Our icon ( - ) decreases the view size.
When I refer to a page number, it is for the Adobe Reader page number box at the Top. (To the right of the Down Arrow) ]
The plastic frame in front of the LCD screen is the Display Bezel.
I may be wrong, but I believe the Display Bezel can be removed, WITHOUT having to remove the entire Display Assembly from the laptop.
Makes life a lot easier.
There is a Philips head screw in the Bottom/Left corner, and a Philips head screw in the Bottom/Right corner, to remove from the Display Bezel.
They are under Screw Covers. The Screw Covers are made of synthetic rubber, or plastic. They are held in place by a type of rubber cement.
I take a computer pick, and gently pry up at the base of the Screw Cover.
If you are careful you should be able to reuse the Screw Covers.
If they do not stick anymore, apply a TINY dab of rubber cement to them, with a toothpick.
The Display Bezel has TABS going around the exterior perimeter of it's inside edges.
These snap into matching LATCHES on the Display Cover.
There also may be some sticky tape, at the bottom/inside edge of the Display Bezel. Means CAREFULLY pry the bottom edge of the Display Bezel when removing.
The best method, of removal of the Display Bezel that I have found, is to flex it.
It is made of space-age plastic, and is pretty tough stuff.
(Of course there are those, who could destroy a steel ball bearing with a rubber mallet, in a sandbox)
I cut a piece of thick construction paper, to just fit the inside edges of the Display Bezel.
Display Assembly laid as far back as possible, the thick piece of construction paper will stay in place.
It is used to prevent scratching of the LCD screen, from your fingernails.
Come to the Inside edge (LCD screen side), of the right/middle side of the Display Bezel. Sliding a fingertip of one hand under the bezel to lift up slightly.
Can't get in? Move over a little. You are at a Tab/Latch.
With one fingertip under the bezel, slide another fingertip under from your other hand. By now a Tab/Latch should have released.
Sounds like you're breaking something.
Keeping the bezel slightly up, move along with the fingertips of one hand, and move towards the Top.
Go along the Top popping Tabs/Latches loose.
Then come down the Left side.
As you reach the bottom ease up on one side a little, and wait for the tape to start releasing. Then ease along the bottom until all the tape releases, and the Display Bezel pops off.
Once the Display Bezel is removed, then disconnect the small cable that comes from the Video Cable (Display Cable - HP), TO the screen Inverter board. (Left side of screen Inverter)
(screen Inverter is mounted behind the Display Bezel, and at the bottom of the Screen Frame.
The Screen Frame is the thin metal frame which surrounds the LCD screen assembly)
[The LCD screen is an assembly of layers. The layers are held in the factory set position by the Screen Frame]
Disconnect the small cable that goes TO the screen Inverter, on the Right side of the screen Inverter.
Remove the screen Inverter, and lay aside.
Remove the Philips head screw at EACH top corner. Holds the Screen Frame TO the Display Cover.
Tilt the top of the LCD screen towards you, remove the clear adhesive tape over the Video Cable connector on the back of the LCD screen.
(DO NOT remove the tape all the way. Just carefully peel it back far enough, so that you can get to the Video cable connector, at the back of the LCD screen. This way you should be able to reuse the tape)
Disconnect the Video Cable (Display Cable) from the back of the LCD screen.
Remove JUST the screws which hold the Hinge Brackets TO the Screen Frame.
The Screen Frame can be taken apart. Of course you will need to do this, BUT ONLY after removing the LCD screen assembly.
THREE screws on each side for the Hinge Brackets.
(Display Panel Brackets)
One towards the Top, two down towards the Bottom.
Pages 64 through 80 in Service Manual.
Page 66/ Bottom; shows the Screw Covers, and Screws to remove from Display Bezel.
Page 68/ Bottom; shows disconnecting the screen Inverter.
Page 69 shows screws to remove in order to remove LCD screen.
Page 69/ Bottom shows screws to remove for removing Hinge Brackets.
(Display Panel Brackets)
Pages 128 through 133 - Recycling/Display: shows taking the Screen Frame apart, and accessing Backlight.
For additional questions please post in a Comment.
(WEAR gloves -> BE SAFE)
Posted on Feb 25, 2013
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