Samsung HLS4266WX/XAA NO PICTURE, Timer, Lamp, Sta


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stumpy21
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Samsung HLS4266WX/XAA NO PICTURE, Timer, Lamp, Sta

Postby stumpy21 » Wed Dec 21, 2011 2:17 am

My mom said her Samsung HL-S4266WX/XAA just would not turn on all the way one day. It tries to start up and goes through the cycle 3 times and turn off, the Lamp, Timer, Standby lights start blinking. As far as I know the picture was not dimming, the ballast was not clicking and the color wheel was not making any noise.

I installed a new Phillips (OEM) bulb with the same makings, no luck.

I installed a new ballast (Same number as the original), No luck.

So I am wondering what to try next?

Take out the color wheel and spin it by hand?

or

Test the ballast voltage? ( not sure what this ballast should be putting out 305volts?)

The only thing that might be a symptom is that I do think I hear a faint beeping, not from the speaker but from somewhere inside, maybe this is the color wheel rubbing?

stumpy21
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Re: Samsung HLS4266WX/XAA NO PICTURE, Timer, Lamp, Sta

Postby stumpy21 » Thu Dec 22, 2011 9:01 pm

I took the color wheel out last night and noticed that the wires going to the speed sensor were melted, even the little white connector was a toasty brown color. So I am going to order a new color wheel.

When I first took the tv apart I noticed some of the paper labels had started falling off and one of them was so brittle it snapped in half even when being gently handled. (First sign of excessive heat)

When I removed the tray containing the light engine I noticed the parts that were close to the TVs plastic casing had browned (discolored) the plastic casing. (Second sign of excessive heat)

When I removed the color wheel the sensor cable appeared down right crispy. (Third sign of excessive heat)

In my guesstimation the wooden cabinet that the Tv resides in just does not have adequate ventilation. So I think a little fan in the cabinet to improve ventilation will solve the problem.

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Re: Samsung HLS4266WX/XAA NO PICTURE, Timer, Lamp, Sta

Postby stumpy21 » Fri Dec 30, 2011 7:44 pm

The End Result:

The color wheel did the trick. I was a little worried that the excessive heat had damaged additional parts but the TV works like before with a new color wheel. When I compared the old and new color wheel there was more resistance on the rotation of the old wheel, but it was not a huge difference. The melted wires were clearly the issue at this point. I would also caution everyone in handling the color wheel particularly taking it out and putting it back in. The wheel itself is glass and very thin glass at that. The housing the color wheel sits in is cast metal (Prolly aluminum) and it is easy to break the color wheel especially when you are trying to insert it in the housing. I know on this TV the color kind of hangs upside down in the housing and it can not just be "dropped in", you have to sort of gently twist it in to position without banging the glass wheel or getting it caught on any of the surfaces inside the housing. The rubber gasket can also be a some what of a challenge, it is of a some what complex shape and can get a bit distorted when you remove the color wheel. I recommend putting the gasket on the housing and messaging it into place a bit before you actually insert the color wheel.

I did notice that the picture has a little more moire then I think it should but I suspect it is the channels my mother watches. I am going to try some different sources but if anyone has any information they want to share on the subject I am all ears.

As for the codes according to what I have read and what the tech guys at DM, they seemed to be useless most of the time on this type of Samsung.


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