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Samsung Color Wheel replacement
This varies a little depending on model number of the set.
Usually a bad color wheel will produce a high pitched sound
or even a grinding noise; some sets may actually shut down if the wheel is bad
To determine if you have a bad color wheel:
set off and wait for main fan to shut off.
the lamp door and then remove the lamp.
- In the
direction the lamp faces you will see a round opening; the color wheel is
facing this opening. It is a round
plastic wheel with colored segments—we want to look to see if any of the
segments are missing; a shattered wheel should be clear to see.
- If the
wheel is shattered or makes the high pitched fan like sound you can with
the model number go online to someplace like Ebay with the model number of
your set and find a part number and replacement wheel for your set---most
of these are 70 to 90 plus shipping—make sure you get the right part.
wheel turns at about 14,000 rpm and eventually the motor seizes up causing
on model number there are some variations on how to replace it; but for
the most part it requires the following.
the set unplugged remove the entire back cover.
the optical light engine dead center in the middle of the set. Some models have a large square box in
front of it that you have to unbolt and remove plugs from one side—mark
the plugs so when you remove them you can put them back in the exact same
Light engine has to be pulled out of the set to replace the color wheel;
this kind of repair usually takes less than an hour from start to finish.
you get the engine out you will find a somewhat square black plastic
shroud on the right side of it----3 philips screws secure it to the frame
of the engine.
the screws and you should be able to pull the shroud up and away.
Color wheel has two cables coming out of it; one is a 3 or 4 wire small
square plug and the other is a flat ribbon cable. Be very careful when you remove the plug
with wires—some people break the wires and then have to get the plug out
of the socket with care. Both plugs
connect the color wheel to the optical engine. The flat orange ribbon cable only has
contacts on one side-WHEN YOU REMOVE IT NOTE WHICH DIRECTION THE CONTACTS
ARE ON---if you put it in backwards(it can be done) the lamp will not turn
need to be careful when you replace the shroud over the color wheel so
that the two cables(the ribbon cable and the other one) do not get pinched
the wheel replaced; install the light engine back in place.
these sets have a safety switch on the back edge of the frame---it is a
lever that will not allow the set to be turned on with the back
removed. After you have installed
the light engine back if you want to see if it worked; tape or hold the
lever(usually blue and on the right side as you look from the back).
- If the
set comes on and the lamp comes on do not look directly at the lamp---Once
you see you have a working set turn it off and wait for the lamp fan to
shut off in back—usually a few minutes.
everything back and replace the back cover also---this should complete the
- Some of these sets after you do this will work but the color will look off--flesh tones will be off--if this happens there is a small jumper on the metal box on the light engine that needs to be located and pulled out--places that sell the color wheel do not tell people about this. SD TECH