Question about Toshiba 62HM95 62" HDTV

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Toshiba DLP fan noise (52hmx95)

The fans on my Toshiba DLP frequently make a loud humming noise, as if something is vibrating that should not be. I am not sure if it is the bulb fan, or the ballast fan, but the noise continues after I turn the TV off until it cools down. So, I am assuming it is the bulb fan. The noise does not happen all the time. There are times when I turn the TV on and hear the normal sound of the fan instead of the loud buzzing. There will be times when I do not hear the loud fan noise initially but then will it hear it later after the TV has been on a while. And there are times when I hear the loud buzzing sound of the fan right away. I did have the buld and ballast fans replaced recently for this reason and now the new fan(s) are making the sound. What could be the probable cause of this (loose mounting screw, crappy fan, etc.) and is there an easy solution to this? Is there an upgrade that can be done with the fans? I hear the same buzzing. My screen colors are starting to look distorted. I have had the tv for 2 years and the buzzing started this summer. I have a bulb fan on order. Do I need to go ahead and order the color wheel?

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  • yates201 Nov 28, 2008

    I have narrowed the problem down a little bit. It is not the bulb fan that is making the noise. The noise starts and stops upon movement of the color wheel. Why did you say that it was a design problem and offered no solution?

  • yates201 Nov 28, 2008

    I know I could take it to a service center. I could buy a new one also. I thought you "expert fixya tech" guys would know just as much as a service tech. Any one else know what is wrong with my tv?

  • yates201 Dec 01, 2008

    I took the back off. The noise is coming from the color wheel housing. I can also feel the vibration with the buzzing on the housing. Where can I order a color wheel?

  • yates201 Dec 01, 2008

    Did you not read my previous post. I am starting to think this is a ogus site. Not very helpful. If I am paying $9.99 I expect to get my moneys worth

  • yates201 Dec 01, 2008

    If you would have read my last two posts, I am beyond the fan being the problem.

  • yates201 Dec 01, 2008

    Both? What do you mean? I just told you it wasnt the fan

  • yates201 Dec 01, 2008

    So the color wheel motor needs replaced?

  • yates201 Dec 01, 2008

    Junoon007,

    Are you serious. Did you not read my previous posts. I can take the light out and the buzzing sound is still coming from the color wheel housing.

    For any one else that would like to help. Is the optical engine the same as the light engine. All I need to know is which part to order.

  • yates201 Dec 01, 2008

    Thanks welcomejee. Your solution didnt fix the problem, but it has put me in the right direction.

    Thanks,
    Eric

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Hi UUUUggggghhhh I have a 1 year old Toshiba 50" DLP rear projection and it had fan noise. It also had a wierd dark spot on the screen that really wasn't on the screen itself. I was taken to a service center and held captive for 2-3 weeks and returned with a new light engine. I thought great! 3 weeks to a month later and bordering on expiration of warranty it starts to make a low screeching sound like a small motor in need of lubricant. The picture jumps all over and resembles a 256 color PC Monitor. The service center comes and picks it up and holds it captive for another 2.5 weeks and says they cannot duplicate the problem. I had even sent them a quicktime movie of it in action.
They drop it off and an hour goes by and off she goes again. Now the longer I leave it on the worse it gets and shuts itself down and sometimes blinks the "light engine" code. Spoke with Toshiba and they are escalating it and should hear back in 3 days... OMG. Kinda off on a tangent, but they do make strange noises.

Posted on Dec 03, 2008

  • ABHISHEK.C
    ABHISHEK.C Dec 03, 2008

    if you want to ask me anything please reply me

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Your color wheel going bad and it will need to be replaced for a mere thousand dollars. So take it to nearest service center..

Posted on Dec 03, 2008

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  • 157 Answers

I completely understand your frustration. A lot of these premium answers receive quick responses in an attempt to get their share of the answer money but fail to do much research. I realize you are irritated, but we are trying our best. Promise. :)

If you "open" the lamp access door during startup, does the pitch change? If so, take out the lamp and use a pencil to "close" the door switch. Do you see the color wheel start to spin ahead of the DLP chip while it makes a sizzling, scratching, sizzling noise? When you pull the pencil away when the noise starts, does the colorwheel slow to a stop and the noise dies with the speed of the wheel?

If the above fits the issue you are having, I hate to say it, but you need to replace the colorwheel. Unfortunately, from what I've been reading, you can only buy the replacement colorwheel inside of the light engine (check tritronics.com and tristatemodules.com) for a pricey $400+.

So far I have not been able to find the color wheel by itself but will keep you updated. In the meantime, I have found your service manual. Perhaps it will come of some use.

Posted on Dec 01, 2008

  • Juli H.
    Juli H. Dec 01, 2008

    awesome response benimur! you put my faith back in the premium responses.

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Hi,
Color wheel of Toshiba is included in Light Engine and you can get Light Engine from Part Store for TV.
Good Luck.

Posted on Dec 01, 2008

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Sir,
replace the bulb it will be OK


Posted on Dec 01, 2008

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  • 251 Answers

Yes u should order both of them at the same time i am superised the tech support for u tv did not recomend that

Posted on Nov 28, 2008

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Hi there,

TV diagnosis and repair is outside my normal Area of Expertise. I'm responding because I too, recently had a similar problem (The buzzing sound). The fix was ridiculously simple.

Like yours, my fan was recently replaced. Soon after the buzzing sound began. It turned out that some of the nearby wiring was not secured properly. One of them was getting brushed by the trailing edge of the fan. I moved the wire.

This was meant as an FYI. A possible cause. Sometimes there really is a simple solution, I hope this is the case.

At any rate, the interior of a television can be a dangerous place with the very real possibility of a high voltage shock.

I'm not suggesting that you open up your TV, much less poke around in there. Please wait for one of the Experts with the proper experience and training to advise you. They will have seen this post as a possibility. Depending on other symptoms it will be considered or dismissed appropriately.

Best regards
Mike

Posted on Nov 28, 2008

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If the fan is new as u replaced it and still the noise comming through.it could be the screw being loose somewhere so when the fan spins it makes the noise because the screw is loose.
or it could also be the colour wheel getting slightly worn out from its sides so while spinning it makes noise.please check that out and get it replaced to avoid the further noise.

Posted on Nov 28, 2008

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Take off the back cover, and check which fan is sounding. the fan may need some lubrication or some wires may be touched with it.

Posted on Nov 28, 2008

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Take it to service center. its better..

Posted on Nov 28, 2008

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Hi and welcome to FixYa,

Unfortunately, a common and known problem with these models. Initially, a similar concern has been addressed on this site. Pls reference this post. An excerpt from that posting "there is no solution to the fan noise problem...this product has a huge cage fan and a second and third three inch fans in it.... more than the samsung product..." as originally forwarded by beldar. Similarly, Scootchu has forwarded his solution on the same post.

Based on the different proposed solutions. it could be inferred that it is mostly a design problem and rather than repairs performed, temporary remedies and workarounds must be utilized.

Just a start, do postback how things turned up or should you need additional information. Good luck and Thank you for using FixYa.

Posted on Nov 25, 2008

  • Louie  Role
    Louie Role Nov 29, 2008

    Hi again and appreciate your postback,

    Toshiba's solution to the colorwheel problem is to replace the entire optical engine, not just the motor. If the unit is still under warranty, then that would be to your advantage; however, if it is not then an alternative solution is required. Optical Engine P/N 23405300 or 23430883 depending on TV's version/chassis number, estimated cost 500USD.

    Temporary workaround as mentioned in the earlier post would require lubricating the colorwheel motor. However, a few things to keep in mind:


    1. it gets awfully hot in there, choose a synthetic non flammable oil;

    2. the alignment and position of the color wheel must not be changed. It is synchronized with some of the other components;

    3. the corrective procedure would be to replace the colorwheel motor, but that is not available. An alternative is to use replacement motor but fitting the mechanical attachments might be difficult.
    Based on the above, then a new optical engine (just for the new colorwheel) might be the easiest solution, but not necessarily the most practical.


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There is no solution to the fan noise problem
this product has a huge cage fan and a second and third three inch fans in it.... more than the samsung product
it can be noticeable if the tv is on hard surfaces
ie wood floors ,inthe corner, glass top etc
the vents on the back of the tv allow for proper cooling of the lamp at shutoff so it doesnt shatter the tube
its kinda like annealing glass
its designed to extend the life of the lamp ....
which im sure youve priced
call toshiba and tell them your lamp is bad right now and get a new one for an emergency ( warranty if you can do it )
they are also improved
this product is known to have short bulb life
sometimes the zinging noise you hear is indicative of a bad color wheel in the light engine which would require replacement
( not cheap)
toshiba will not piece out the color wheel assembly individually

Posted on Nov 25, 2008

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We techs at fixya often can only offer advice on repair options, without being there we are kinda limited, also the number of models and different designs is staggering to say the least, I would recommend you replace the motor, the front bearing is most likely worn out and causing vibration when it spins.

Posted on Nov 28, 2008

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