Question about Vivitek V37655 56" DLP TV

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Put in new lamp for Vivitek DLP and picture flashes

After about half hr. the picture starts to flash. The color goes in and out. It appears to be white when it flashes.
We put the cable wire from the splitter directly into the TV and it still flashes. So now we put it back into the DVR Box and into the TV.
We have no idea for this occurrence.
We live in FL and there are no service man who work with vivitek so we don ' t know how to get parts or how to replace them.

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I just posted the following to someone else, since I think these problems are related.

I had a similar problem.
My TV started to flicker and I put a new bulb in. The new bulb did not help, even if it is good to replace after a couple thousand hours.
I found out that my heat sink, which is sitting on the CPU with the mirrors came loose and the unit overheated and shut off after flickering a while.
Try to take the lower back panel off and you see a heat sink which is sitting in the center of a aluminum sheet metal piece. Disconnect the wires which are attached to the circuit board behind the sheet metal. Then take off the screws holding the sheet metal and pull it gently off. It will take a little force, but it does not damage anything. Now you see the heat sink on the circuit board held by a latch going across the heat sink.
On the upper right corner you will find the handle to open the latch. Once you did it , you can take the heat sink off and see the main CPU (as I took the latch off, my heat sink fell off).
On my heat sink the Heat Sink Compound Paste creating the connection between the CPU and the heat sink dried out and became brittle, son there was no connection anymore and the heat couldn’t be transported out through the heat sink, which is cooled by a fan on the left.
I took the brittle Heat Sink Compound Paste off and applied a generous portion of the one that I bought at Radio Shack. I used a Silicone-Base Heat Sink Compound which ran $4.99 excl. tax.
After applying the paste put the heat sink gently in and when you do, you will feel like a suction indicating that you have a connection between the CPU and the heat sink.
Now you need to put all parts back together.

If you are not familiar with electronics and those wires or wouldn’t hurt or would be wise to mark the connectors and to make pictures before removing them. This will save you a lot of frustration.

I hope this helps you and brings your TV back to life. My TV was cutting out after 25 minutes and runs now like a charm.
Good luck.

PS: If you experience a black screen with vertical stripes (mine were white and green) then most likely the light engine needs to be replaced, I had this after 9 months and got it fixed under warranty

Posted on Jul 04, 2009

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The heat sink solution was exactly right on the money! Thank you! Thank you! You saved me $2,000 on a new TV.
P.S. The best place I've found to buy a lamp is dlplampsource.com. They have a one-year warranty that they actually do honor.

Posted on Oct 11, 2009

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1 Answer

I have a Vivitek RP51HD41-A TV. The TV keeps turning off and on. The color and sound is fine. I have replaced the lamp and this has not fixed the problem.


If its a DLP it may have a color wheel which could be your problem (the colors will change etc)

Color wheels move at high speed and if slow down set will shut down.

The wheel if there will face the lamp. If often if failing will make a high pitched whine or a fan like sound.


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You need to replace the ballast board the powers the lamp.

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My 51" Vivitek started to hum loudly about 2 months ago and I kind of ignored it ,but it got so loud and annoying I had to do something.First changed the bulb and then bought a color wheel at www.vancebaldwin.com .Login as guest and then enter your model number into corresponding box.They have a few Vivitek parts.
I replaced my color wheel myself and it works great!
I'd be happy to help any way I can.
Good luck!

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Vivitek 56 inch dlp projection is humming. why and how to fix


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My Vivitek started humming a couple of months ago and first I replaced the lamp.
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I read in other forums that humming is linked to color wheels and that seemed like where the noise was coming from.
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1 Answer

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You should have checked the troubleshooting section of your manual!! Okay, enough scolding. You need a new lamp. I do enjoy my Vivitek, but this is a definite downside of a DLP, especially if you watch a lot of TV. I am on my third lamp already, and they are NOT inexpensive. If you have your TV less than a year, your lamp may still be covered under warranty and may be replaced by Vivitek for free. If you have to buy your lamp, it can easily cost you over $200. This is the new lamp in a whole new assembly, which makes installing it EXTREMELY EASY and will just take a few moments. If you are a little more adventurous and want to save some money, you can buy the lamp alone. You then remove the lamp assembly from the television, open it up (there's several screws to remove), disconnect the old lamp, and reverse the process by making the proper connections with the new lamp and putting the new assembly back together and back into the television. It sounds more complicated than it is.. Biggest rule.-- don't touuch the surface of the lamp with your bare hands. You don't want your oils on the lamp. . And once you put everything back together and restart the TV, reset the timer for the lamp (the manual explains how). The lamp timer is very important for warning you of when to replace the lamp under ordinary conditions, when it does make it through its entire expected life. I don't know if it's appropriate to actually recommend specific vendors for the lamp, but I can if that's okay. email me midlomiss at yahoo dot com

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