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Old 12-23-09, 08:50 PM   #1
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Mitsubishi WD-52627 problem


I'm looking at a WD-52627 that a local person has for sale. The problem with it is it's noisy (color wheel, most likely), and a corner has a pink hue to it. I was told this was probably the light tunnel, but wouldn't a light tunnel problem cause a dark spot or edge, not a color problem? The other part of that is the service manual indicates that the light tunnel gets taken off the old light engine and placed on the new one when replacing the LE, so it sounds like they usually don't go bad. Does anyone have any thoughts?

Thanks.


Last edited by Cougar281; 12-27-09 at 12:22 PM..

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Old 12-24-09, 06:27 AM   #2
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re: Mitsubishi WD-52627 problem


I have never seen a light tunnel problem on a Mitsubishi. I was under the impression that they used a solid device rather than the cheaper tunnel of four mirrors that samsung used. Mitsubishi does not supply discrete parts for the optical engine on these sets.

Noise can ba from fans or a color wheel. The latter will be a much higher pitch. This would be very rare, but like above, not available as a discrete part.

The color in the corner may just be debris or cleaning, but I have not seen this problem at all in these sets.


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Old 12-24-09, 10:43 AM   #3
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re: Mitsubishi WD-52627 problem


Quote:
lcaillo wrote: View Post
I have never seen a light tunnel problem on a Mitsubishi. I was under the impression that they used a solid device rather than the cheaper tunnel of four mirrors that samsung used. Mitsubishi does not supply discrete parts for the optical engine on these sets.

Noise can ba from fans or a color wheel. The latter will be a much higher pitch. This would be very rare, but like above, not available as a discrete part.

The color in the corner may just be debris or cleaning, but I have not seen this problem at all in these sets.
Thanks for the info; Do you know of a good source for the parts that are available? If it ends up being that it needs a light engine, the sources I have found either don't have any, or they want almost $2,000 for it...


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Old 12-25-09, 05:59 AM   #4
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re: Mitsubishi WD-52627 problem


Mitsubishi is the only source that I know of for new parts. You can try ebay for scrappers.


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Old 12-26-09, 04:28 PM   #5
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re: Mitsubishi WD-52627 problem


I got it home and took it apart; The color wheel is definately bad; It looks like one of the segments moved out about half a mm, just enough to throw it out of balance. Upon searching the p/n (28S5593030), it appears if you look hard enough, it can be found.

The only other problems that I can find is the brass bosses in the lamp housing for the ballast plate are boogered up (two missing, one partially stripped and one so-so), and the 1"x1" piece of glass between the lamp and color weel has a "mark" in it and one of the corners appears chipped, no clue what caused it, possibly "burning" dust. I think with some replacement screws, a new color wheel and a good cleaning, it should be a nice TV.


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Old 12-26-09, 08:45 PM   #6
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re: Mitsubishi WD-52627 problem


Let us know where you find the color wheel. That info may be useful to others in the future.


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Old 12-27-09, 01:24 PM   #7
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re: Mitsubishi WD-52627 problem


Just out of curiosity, any chance either of the numbers on the color wheel (28S5593030 and A15415) cross over to a color wheel from another make or model of TV? Aren't there other brands of DLP TV that use a color wheel with the same specs (6 segment 10,800 RPM)?


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Old 12-27-09, 02:31 PM   #8
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re: Mitsubishi WD-52627 problem


I am not aware of any sets that used the same color wheel.


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"I attribute the little I know to my not having been ashamed to ask for information, and to my rule of conversing with all descriptions of men on those topics that form their own peculiar professions and pursuits." John Locke

Leonard Caillouet MS, CET, MST, ISF

Need Electronic Repairs? Look to these guys first. The Pro Squad are some of the most experienced and reputable servicers anywhere.
http://www.theprosquad.com/index2.aspx


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Old 12-28-09, 10:09 AM   #9
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re: Mitsubishi WD-52627 problem


I found a Used Light Engine from a 62628 (Seller said TV was almost new, had a signal board problem that owner chose not to fix so it got parted out); near as I can tell, the light engine on the 52" & 62" TV's is almost identical (p/n for the 52" is -10 and 62" is -20), my guess between that and pictures of the two is the main/only difference is the lens. I'm going to take the color wheel out of the 62628 LE and put it in the 52627 LE and keep the "new" LE for parts if I ever need it, unless someone thinks I should swap the lenses and use the "newer" LE.


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Old 12-28-09, 11:42 AM   #10
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re: Mitsubishi WD-52627 problem


Different chassis sets. The CW may or may not be the same.


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Leonard Caillouet MS, CET, MST, ISF

Need Electronic Repairs? Look to these guys first. The Pro Squad are some of the most experienced and reputable servicers anywhere.
http://www.theprosquad.com/index2.aspx


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