Question about Panasonic PT-AE700U Multimedia Projector

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Blue haze, blue tint

Have same problem. Ordered and received new G and B polarizing filters for LCD block and installed myself. Had to order the G filter since when I was removing to inspect it cracked...so be careful, very delicate. When I removed blue polarizing filter, it seemed to have a 16:9 shaped 'burned in' shape, so I figured that had to be the problem. Replaced same. Unfortunately, after about two hundred $$ for the two polarizing filters (ordered through Panny) from part numbers in service manual downloaded from smpcshop.com for around $10 (highly recommend if you are going to attempt this yourself to save the $150 professional service diagnosis charge), I still have the same problem. So not so sure if it's those polarizers, or if it's the B incedence polarizer that is closer to the hot bulb. Solutions welcome.

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Posted on Jan 02, 2017

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projdoc
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SOURCE: Blue Haze on the left and various other places on screen

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.

Posted on Aug 28, 2009

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projdoc
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SOURCE: POLARIZING FILTER

you can't. either replace the entire optical engine or find another broken projector on ebay.

Posted on Dec 23, 2009

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Our PJ862 we use for church has developed a blueish tint to the display. It is pretty harsh and looks really dark and blue. Any solutions? Would changing the bulb help?


Since this is a 3LCD type system, I believe the blue organic filter polarizer glass plate that filters the blue light beam before it enters the blue LCD panel is burnt due to old age and causing the picture to go blue.
You can confirm this if you safey remove the cover and check the optics.

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3 Answers

Yellow tint


Hello. Here's the visual key to remember about projectors--LCD panels show their colors like this: RED lcd panel displays cyan onscreen(baby blue); GREEN lcd displays purple; BLUE lcd displays yellow. ( You now know where the displayed dust is!) The problem is most likely a burned blue lcd or polarizer filter in front of the blue lcd panel. This occurs when the dust filter isn't cleaned regularly or properly and heat builds up--yes, enough to "cook" the lcd panel or actually cause a burn to develop on the polarizer. The polarizer is just like a lens in a pair of good sunglasses. It is a small, extremely thin, pane of glass with polarizer material glued onto one side. When burned, it causes a "shadow" effect--that enhances the display of that particular color--in this case, yellow.--Hope I was of assistance!---Rick

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2 Answers

Dell 2400 MP DPL Projector projects a yellow tinted image.


Clean any external dust filters or air openings in the unit.If you don't want to remove the filters, you can simply use a vacuum cleaner hose to suction away the dust from the filter element--same effect anyway. The unit probably does indeed need a thorough cleaning.
The yellow effect is most probably a burned BLUE polarizer filter located behind the blue LCD panel. (Color key--Purple onscreen=green lcd, baby blue onscreen=red lcd, and yellow onscreen=blue lcd). That's how you can tell which lcd has dust on it! Usually, the green lcd has the most free area around it and collects the most visible dust. (large purple specs) The polarizer filters can get burned due to excessive heat (not keeping proper ventilation). Of course, it might be the blue LCD panel which is failing prematurely due to heat build-up over time. The polarizer filter isn't that expensive if it can be replaced, however, the actual lcd panel IS.---Rick

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1 Answer

Projection has yellow tint


From your description, it sounds like a problem with the blue color. Green LCD=purple onscreen, Red=cyan(baby blue) onscreen, Blue LCD=yellow onscreen. It could be a lot of dust on the blue lcd panel, or worse, might be a burned polarizer filter behind the lcd panel due to excessive heat. If you can focus on the yellow and its tons of yellow specs, its dust. A burned filter however, must be replaced. A technician trained in projectors will have to do it. The filter material is glued to a thin glass panel and is replaced as a single filter. It's a very involved repair.

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1 Answer

Blue Haze on screen Sony cineza vpl-hs50 projector


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.

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2 Answers

Yellow spot


the problem is in the light path starting with the blue input polarizer then the blue lcd hopefully its just the input polarizer. worst case you will have to replace the LCD block witch is expensive to do. the polarizer ia a speacialy tinted glass designed to help with the LCD's temp.

Oct 23, 2008 | Mitsubishi SL4SU ColorView Multimedia...

1 Answer

Greenish tint


Not sure if this is the solution, but I believe the color polarizer filters have been burned. I have a yellow haze circle on mine and I'm pretty sure that's the problem. In my case the blue filter is burned, leaving the red and green stronger yeilding a yellow blur.

Aug 27, 2008 | Epson - PowerLite S1+ Multimedia Projector

2 Answers

LG LCD REAR PROJECTION BLUE HAZE -RT52SZ30RB


Have heard that it's a common problem, there's an issue with the optical block. Sony is susposed to be aware of the problem & has exptended the warranties on some models or offers gift cards towards the purchase of a new tv, depending on how hard u push once u get someone on the phone.

Aug 05, 2008 | LG RU-60SZ30 60" Rear Projection...

2 Answers

Blue haze on hitachi 51" tv


I finally emailed Hitachi about the blue haze and since my televison is only 16 months old they agreed to pay for the part (they didn't say what part) and I will have to pay the service charge. The repairman is coming out on 2 Apr 08. I will post results after that.

Mar 09, 2008 | Hitachi 50V720 Television

2 Answers

Blueish tint on picture


no... lcp panels will look different when going bad ! this is the polarization filter, most of the time the one BEFORE the lcd panel (blue in this case). these should be cheap but are not easy to get...so you might pay quite a lot. you can also buy polarization filter sheets and cut them to size. keep in mind to check for the right orientation !

Aug 21, 2007 | Panasonic PT-AE700U Multimedia Projector

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