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DLP Chip Repair Possible?

post #1 of 19
12/28/12 at 8:17pm
Thread Starter 
Hey guys I have a WD-73733 DLP with about 100 white and black dots all over the screen. Ive been doing some research and was wondering if these chips just burn out over time and there is any way to repair them? Is this issue caused by heat or just being at the end of its life? Could a reflow possibly repair the chip? Thanks.
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post #2 of 19
12/28/12 at 8:21pm
A TV that old needs to be put out of its misery. cool.gif

It's either beyond repair or not even possible to repair due to its age and lack of parts, or it just wouldn't be cost effective.

If you've really done all that much research then you should already know the answer to this as this is kind of a common problem. In fact the answer you are looking for is in a thread near the bottom of the first page in this forum.
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post #3 of 19
12/28/12 at 8:40pm
Thread Starter 
Yes I understand it is a common problem. And it looks like the only way is to purchase a new DLP Chip. But I was just wondering if a reflow would solve the problem? If i purchase a new chip is there any preventive maintenance to perform so this not happen again? Thanks..
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post #4 of 19
12/29/12 at 1:17am
Quote:
A TV that old needs to be put out of its misery.
A fast search tells me it is a 2007 model. Five years is old??? Yea, right.
Sorry kid, that's not old. rolleyes.gif

The first question is; do you have the Service Manual? Second question, have you searched for parts?
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post #5 of 19
12/29/12 at 6:21am
Quote:
Originally Posted by videobruce View Post

A fast search tells me it is a 2007 model. Five years is old??? Yea, right.
Sorry kid, that's not old. rolleyes.gif
The first question is; do you have the Service Manual? Second question, have you searched for parts?

Here you go again Bruce trying to stir the pot (Have you looked up what a Darblet is yet...? wink.gif). 5 years is very old in the RPTV world. When you consider how much a brand new version of his set would cost, plus factoring in how much it would cost to fix his old 1 if he is able to and, yea, it's time to put that OLD TV out of it's misery.

In reality that TV might be closer to 6 years old since we're closing in on the period of time in which Mits typically releases their TV's (spring time).
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post #6 of 19
12/29/12 at 8:20am
Why don't you leave your two bit comments to yourself. If he wanted to get rid of the set, he wouldn't of asked.

What are the replacement choices? LCD? Plasma? One is a step down (or two), the other has reflection problems that needs a light controlled room.
Your mentality is just what the CEA loves, throw something out if it is more than few years old. There is no reason these shouldn't last 10 years under normal use. Just because you think it is old, doesn't mean it is or should be considered "old". Apparently you have succumbed to the 'mobile electronic toys' mentality. Throw it out in two years.

The only one that is "stirring up the pot" is you blasting out narrow minded opinions.
Edited by videobruce - 12/29/12 at 9:25am
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post #7 of 19
12/29/12 at 10:43am
Thread Starter 
Im going to fix the TV either way. Im going to buy a new DLP chip unless there is any possible way to fix the current chip? I only posted on this forum to ask if anyone knows if the original chip can be repaired by a reflow? If not ill buy a replacement.
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post #8 of 19
12/29/12 at 12:48pm
I don't see any possible way to do a "repair" on something like that. Unless it is just the associated circuity that went south. I kinda doubt it's a case of cold solder joints, but you can always try.
There is a "sticky" at the top of the sub-forums page with a ton of information through links here and elsewhere that will help you. wink.gif

Good luck and post back.
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post #9 of 19
12/30/12 at 11:03am
Quote:
Originally Posted by gtpimp024 View Post

Im going to fix the TV either way. Im going to buy a new DLP chip unless there is any possible way to fix the current chip? I only posted on this forum to ask if anyone knows if the original chip can be repaired by a reflow? If not ill buy a replacement.

I believe I heard from someone with connections to the TI DLP group that this defect was caused by the mirrors becoming physically stuck, by a substance inside the assembly. Normally, the electrical charges are strong enough to overcome the lubricant, but they changed to something that ended up getting too sticky in the long run. Notice how this problem only began to happen in a particular generation of DLP chips. I just wonder if they realized the defect and corrected the problem. Still, $200 isn't too bad to get back to a good looking pic.
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post #10 of 19
1/8/13 at 8:18am
Thread Starter 
So I installed my new DLP chip and shes back in great working order. What do you think the life expectancy of the new chip is? Thanks!
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post #11 of 19
1/8/13 at 8:25am
I suppose you didn't document the process (photos), so others could benefit?
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post #12 of 19
1/8/13 at 12:53pm
Isn't the 73733 one of the covered models that Mitsu is replacing the DMD chip on - free parts, you pay labor (anywhere from free to $200)?
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post #13 of 19
1/8/13 at 4:42pm
The bad DMD chips were produced by TI. They got into both Mitsubishi and Samsung DLP TVs. It seems 2007 was the model year most affected. It's not like all DLP's will have this problem, especially not the newer ones. It's similar to the capacitor problem recently, when a bunch of manufacturers got a hold of some bad capacitors from a supplier. You can read about that all over this forum is as well.
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post #14 of 19
1/8/13 at 4:53pm
Quote:
Originally Posted by pacofortacos View Post

Isn't the 73733 one of the covered models that Mitsu is replacing the DMD chip on - free parts, you pay labor (anywhere from free to $200)?

Yes
Quote:
Mitsubishi is replacing these DMD IC chips nationwide under an unannounced kind of recall for model #’s WD60C9, WD73733, WD57734, WDY657, WD73734, WD65735, WD60735, WD65C9, WD73840, WD65833, WD65733, WD73735, WD73833, WD57733, WD65734 and others. Call them @ 800-332-2119 and give them your model, serial # and date of purchase, tell them you have the white spots, they will set up a workorder with a local Mitsubishi servicer to come to your home and replace the DMD chip. Mitsubishi will supply the part (part # 276P595010) for free, but you must pay $200 in labor. BUT…if you ask for Shantell Hebert when you call Mitsubishi, and really push the issue, she may also pay half of the $200 labor fee.
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post #15 of 19
1/11/13 at 1:19pm
Thread Starter 
I bought the chip from this website and watched the tutorial offered by them as well. While I was in there I used a can of compressed air to blow all the dust out..

http://www.shopjimmy.com/samsung-mitsubishi-toshiba-4719-001997-dlp-chip-2.htm

Also used code SJGC1311 to get an additional 15% off.. Cost me $132 total out the door with free 2 day shipping..
Edited by gtpimp024 - 1/11/13 at 1:24pm
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post #16 of 19
1/12/13 at 5:59am
I see the video even tells you to take pictures. Did you? Especially since you already started a thread on it and would post back.
You cover your tracks that way. Also, if you ever had to do it again you have your own documentation.

I can't believe they wasted time showing the unscrewing of every screw. rolleyes.gif

Link added to my repair thread.
Edited by videobruce - 1/12/13 at 6:05am
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post #17 of 19
1/14/13 at 6:35am
My remaining concern is the life expectancy of the replacement chips offered for repair. When you buy used, what is the source for these and how much use do they have already? If you pay for Mits to supply the chip, is the new replacement a new version that will not have this defect again in the future? I've asked people who have had their tv's repaired to document part numbers, but so far I've seen no feedback.
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post #18 of 19
1/14/13 at 6:52am
Are these actually used, or are they new?
Is it clearly stated either way?
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post #19 of 19
1/15/13 at 5:59am
My impression of shopjimmy was that he is sort of a salvage yard of used tv parts. I may be wrong though.

But I'd still like to know if Mits is replacing with a new, identical part, or if there is actually a new revision of the DMD device being used.
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