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, 26 February 2019

HOW TO REPLACE A COLOR WHEEL IN DLP PROJECTION TVS





HOW TO REPLACE A COLOR WHEEL IN DLP PROJECTION TVs


Details about replace emnt fo color wheel to Samsung HLM 4365WX.  Color wheel part number to this projection TV is BP96-00250A. 

These picture are for comparison.  The actual wheell may look differ to these pictures.

Do all these, only when the set is in cold condition.

To replace it.

  • Remove the back panel from the TV set. The panel runs the entire width of the bottom rear of the set.  There will be 14 fixing screws.
  • Remove the projector lamp.
  • Unscrew the two brass screws, on the right side of the TV.  The screws won't come out, just pull them out with the whole unit by pulling it by its handle and sliding it straight out.
  • Remove the panel on the left side removing two screws holding in place.  Slide it and the attached printed circuit board out a few inches until connected cables stops you. The printed circuit board needn't to be detached to replace the color wheel.

Note the positions of connected cables, becuse you have to set it back, if any one detaches from place.
Once you have done this, pull the power cord out of the notch in the bottom of the case.  It's blocking the next part that has to slide out.

  • Remove two screws that have larger heads, that holds the center panel. You don't need to take off the regular sized screws in the bottom which have larger heads than the rest.
  • Slide out the center unit slowly, just a few inches and take a peek inside as you do. It is a snugfit, so you will need to ease out both the top and bottom at the same time.  Look at how the projector lens is fitted inside a foam sheath.  Take a good look.

There are a few cables on the left side restricting it.  You'll need to unplug:
Blue/Brown two wire power cable.  Blue/White cable connecting to the left side.
Squeese the plug to unlach it and remove it from the center unit you are removing.
Sensor switch on the right side.  Unscrew this from the TV case bracket.
Now you can slide the center panel and all parts behind it out of the TV.  If you didn't remove any cables on the flat panel, you will have to swing everything over to the left to clear the TV.

Locate the color wheel cover.  It will have a small circuit board on the top of it with blue/black wires connected to it.  Remove the plug.  Remove the two cables coming to color wheel. One will be copper coloured ribbon cable. Slide it out. The other is the cable with two white, and one blue wire.  Use a jewellers' screw driver to detach it.  Do not pull it hard.

There is enough slack in the wire to route it around cover, when removing it.  Can unplug the wire for old color wheel and plug it in new one; the plastic tab will break off the old connector, when you go to remove it will still fit snugly on the new color wheel.

Unscrew the color wheel cover.  There are three holdings in place.  One to the rear of the set, and two in front.  Unscrew them carefully left them in place and pull them out with the cover.  Slide the cover straight up.  This will expose the color wheel.

Remove the bad color wheel.  There are three holding screws. Remove the wheel by lifting the front edge and slide it towwars the front.

Insert the new color wheel.  Do not touch the color wheel.  Using hand gloves is recomended.  Put the color wheel cover back. Put all guts back in place.
Posted By: FRANK at 06:19
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