This projector get regular use, 2-3 times weekly and recently started to exhibit a blue haze throughout the screen which eventually developed into seemingly random blue pixels. The blue pixels do not display on the screen when there is no input (the VGA input is all that is used) and the white NEC logo is onscreen. There is also a large area in the lower middle of the screen which when the unit is running without any input displays as a large yellow blotch. This blotch is also visible when there is video signal, and the blotch moves when the screen orientation is changed.
I will be testing the svideo on the unit later today to see if the issue is related purely to the VGA.
If anyone else has experienced these issues some suggestion to fix or what to repair would be greatly appreciated.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
As it appears from the images that the images are fine. The sanyo PLV-Z2 is a LCD projector. So basically it projects 3 R G and B lights to make the screen. Yes it is definately not a LAMP issue. Either dust could have accumulated on the R and G panels thus leading to these prominent BLUE patches or if the LCD panels are damaged, u have to get the G or R replaced.. try running a application like Displaymate from "http://www.majorgeeks.com/DisplayMate_d4189.html" and see which of the panels is exactly responsible for the problem. I think this should sort it out.
the light filter on the blue lcd panel is fried due to excessive dust and heat. clean out the projector with canned air. unfortunately, you cannot buy individual parts of the optical engine- you'll have to replace the whole thing. or live with it.
it's the polarizing filter on one of the lcds. they tend to fry due to excessive heat. clean the dust out of the projector so it can cool down properly. but you will need to replace that filter. it is fairly easy, but remember which plugs go where. however, many companies won't sell parts for or replace components of the optical engine or the prism assembly. if they don't, it's going to cost a bit. check the panasonic website for the closest authorized service center.
Its your blue polarizer going bad. This happens over time due to the excessive heat generated in the projector. The main problem is that your projector has organic LCD panels that degrade over time and in turn degrades your blue polarizer. The same thing happened to my sanyo Z2. It took 5 years for it to show on my Sanyo because I only use the projector for sports and movies. not daily tv watching. In any case, it isnt worth it to spend the money ti fix it...jut put tat towrds a new projector. The latest crop of LCD projectors almost all use in-organic LCD panels that last much longer. Hope this helps.
Wow, 3 in a row. As described on 2 other projector issues this is very similar to those others. I'll repeat the info here.
I assume this is an LCD. I don't remember the s4 being a DLP projector.
sounds like the LCD panel used for the blue color has gone out. The
image is made up of red, green and blue images layered upon the screen.
If the blue panel has gone out then there is nothing filtering out the
red light in the image.
It looks like yours has just a secone of the panel dying or comming loose from it's connector.
could be a simple open and reconnect fix. I personally have never
opened a projector, so I'm not going to walk you through it as I do not
know how hard it would be to tinker with. It should eb a cheap fix for
a true repair man though.
On the "Option" menu, try selecting "Service" and the "Factory Reset". This may help. If not, you will have to use the menus to manually adjust the level of blue in the projectin. Go here for the manual for your Hitachi and you will find instructions: http://www.aboutprojectors.com/pdf/hitachi-cp-x445-manual.pdf