We have the NP200 at our school and we're having some trouble with a few that are flickering the picture - where it looks almost like an inverse of the image or something. Anyone seen this and know how to fix it? I've made sure all the connections are secure and even tried switching the vga cords with new ones and nothing seems to get it to stop flickering color.

There's a website that has all this information about all this and manuals everything totally free there are many actually but I personally like few like.. reliable-store .. let me know if u need help
thanks

Need the torque settings for a nissan np200 8valve silinder head

Seriously?

Science has named and classified about 1 million distinct species of insect. You expect someone to name a million insects for you, so you can then go name a few bugs at school. Get real.

Do your homework properly. Get a book from the library and do some reading. You might learn something.

You will need the T-CON board replaced or serviced.

Here's a link for the later (also has a picture of the inverse colors picture effect you're referring to as "thermal"):

http://www.coppelltvrepair.com/p/828/repair-service-for-samsung-ln37a450c1dxza-t-con-board-causing-inverse-colors-or-other-image-deformations

Dusting is not going to help. I could be the lamp if it happens with no input hooked up.

I have 2 NP-200 projectors installed in a school which show white dots on a black background and black dots on a white background. This is caused by the DMD chip losing pixels. Only solution is to replace the chip, I'm researching now if that i an economical solution.

I have about 10 of these in the school I work in, most of them have gone mental flickering, my solutions has been to open the covers remove the bulb and carefully using a compressor blow all the dust out..This has worked and cured them in about 6 out of 8 cases

Hi Robert9004x2,

If you want to examine the matrix you want to inverse and, the one that is given you trouble pressing [2nd] [MATRX]. Then stroll and, select the one you want to look at by pressing, [ENTER]. You'll have to press, [ENTER] again and, matrix should display at the Home screen. At the Home when you get to them your looking for the ones that are not square, like 2 by2 or 4 by 4 etc. You might need to re-edit this matrix so, that it is square.

Your trying to invert a matrix that isn't square you might be using using the proper key sequence to create a inverse matrix. Here what the correct inverse matrix look on the Ti 84 Plus Home screen.

And pictured below is a Matrix is being inverted by using the ^ and the -1 keys. Which to inverse a Matrix on the Ti 84 Plus you have to use the [x^-1] key.

This is not the proper way to inverse a Matrix on the Ti 84 Plus. The proper way to inverse of a matrix, the [x-1] key must be used, instead of pressing the sequence [^][-][1]. The [x-1] key is the official inverse key and is located right under the Math key. It is also the same key that you use to get to the matrix menus. The [^][-][1] sequence is only raising the matrix to the -1 power and, will cause an error too. If you need any more help, just post a comment and, I'll respond quickly.

The trouble is most likely in the Video processor. If the trouble looks like its tearing the video only from side to side it may be the line doubler circuit. Some of these boards are no longer available but a good TV tech may be able to componnent level repair it for you.

Your having trouble with the vertical sync/deflection circuitry. Probably a driver since it clears up after it gets warm. Could be as simple as a cold solder joint but it's not something you can do yourself unless your a tv repairman.