JVC D-ILA has purple rain clouds....

[Kchandra]

Hello gang

Wife and I own a 52" D-ILA which we bought two weekends ago. We purchased a denon dvd-1910 last weekend as well and the dvi to hdmi cable (119 bux, yoeouch) and set up things.

We watched hidalgo tonight and noticed something peculiar. In all scenes that had dark black sceness, the screen looked like it had purple clouds! :wow:

Jokes aside, all dark scenes on the screen showed up with lighter purple pockets that looked like clouds. I hope my poor explaination makes sense.

So, I threw in attack of the clones and go figure - same deal. All dark scenes reveal this purplish clouds in the background.

Wife starts saying I should have bought the mitsu dlp and we need to return the TV asap and get it.

Can y'all suggest something, anything for me to check!

I went thru all the settings on the TV and DVD player. Gamma correction, digital filter, cinema mode etc etc etc. No luck! I am thinking we either got a bad apple somewhere!

TV is set to digital in. I have upscaling set to 780p on the denon which is what the JVC is supposed to be. I can try component cables, but from what I have heard the DHMI is a superior signal.

Could the DVD player be the culprit?

Any advice at all will help! Thanks a ton!

[Ratman]

If it is only apparent with DVD's and not HD programming, then yeah, I'd suspect something is amiss with something DVD-wise.

First... set the DVD to output 480p. Still there?
Try... component video cables. Still there?
Set the DVD player to output an interlaced signal? STill there?

Last but not least... do you have (or borrow) another DVD player?

See what happens from there.

[kevinw]

Not only that, take back tha exspensive DVI cable and get one at less than a 3rd of that price.
http://www.hdtvoice.com/voice/showthread.php?t=9381&highlight=DVI+cable
Since your DVD player is an upconverting one you need to have a DVI to get any resolution above 480p.

[Kchandra]

If it is only apparent with DVD's and not HD programming, then yeah, I'd suspect something is amiss with something DVD-wise.

First... set the DVD to output 480p. Still there?
Try... component video cables. Still there?
Set the DVD player to output an interlaced signal? STill there?

Last but not least... do you have (or borrow) another DVD player?

See what happens from there.

Ratman:

1) help me understand, isnt 480p pretty much the same as an analog DVD?
2) I will try all those tests tonite.
3) I have a sony DVD player as well I can hook and up tonite to test, but it only has s-video or compnents out!
4) I don't think it has interlaced signal - just progressive scan which I have turned on? Do you mean something else?


kevinw:
1) So, you are saying that the HDMI port will not pick up 780p and I should send just a 480p?
2) What if I got the sammy or toshiba that has an HDMI port on the back, can I then send a 780p signal to the TV?
3) Thanks for the cable link!

Thanks all! Please feel free to advise away

KC

[kevinw]

Ratman:

1) help me understand, isnt 480p pretty much the same as an analog DVD?
2) I will try all those tests tonite.
3) I have a sony DVD player as well I can hook and up tonite to test, but it only has s-video or compnents out!
4) I don't think it has interlaced signal - just progressive scan which I have turned on? Do you mean something else?


kevinw:
1) So, you are saying that the HDMI port will not pick up 780p and I should send just a 480p?
2) What if I got the sammy or toshiba that has an HDMI port on the back, can I then send a 780p signal to the TV?
3) Thanks for the cable link!

Thanks all! Please feel free to advise away

KC
Waht I was sying if you are checking the player at a lower resolution as Ratman suggested, only 480p or less will come out of the component s. All the Higher rez's -720p and up will come from the DVI

A DVD is 4801 unless it upconverted by a progressvie scan DVD player or by a TV when using component outs on a Non progressive player or a progressive player that has been switched to interlaced( non-progressive)

The suggestion of another player is to see if the input on the TV is bad. If the Purple is duplicated by the other player , that eliminates your upconverting one as the culprit.

[Kchandra]

Kevin -

1) I plan on switching to 480 and checking first.
2) I will switch the progressive on/off and see if that changes anything.
3) I will switch to component/set to analog and test
4) Then, I will swap players and just see if its some sort of DVD player issue

I will check the HDMI by using the DVI to HDMI cable on the cablebox and see if thats causing the problem as my cablebox is currently using the compnent out! I am not sure how if the box can be switched from analog to digital - I saw no settings for it. Its a motorola unit with DVR...

[Kchandra]

Ok, guys! Its macroblocking that causing most of my problems! I also have a greenish haze when watching movies. Apparently, earlier builds like mine from June 2004 are faulty. I may try to get a newer set.

[kevinw]

Ok, guys! Its macroblocking that causing most of my problems! I also have a greenish haze when watching movies. Apparently, earlier builds like mine from June 2004 are faulty. I may try to get a newer set.
Thatg seems reasonable. While your waiting, What stteings are our contrast and bightness set at? If tey are very high-over 50, try reducing them.

[Ratman]

First time I've heard of macroblocking being called 'purple rain clouds'.

Now there's a 'greenish haze' too?

Are watching "The Weather Channel"?

How did you come to this conclusion? Hopefully your info may help others in the future.

[Kchandra]

Thatg seems reasonable. While your waiting, What stteings are our contrast and bightness set at? If tey are very high-over 50, try reducing them.

Everything on the TV is set at zero!

[kevinw]

with your TV is ZERO the middle or the highest?

[Kchandra]

First time I've heard of macroblocking being called 'purple rain clouds'.

Now there's a 'greenish haze' too?

Are watching "The Weather Channel"?

How did you come to this conclusion? Hopefully your info may help others in the future.

Sorry if you like Prince and that term offended you! :hah33:

But, when looking at a pitch black scene, these lighter purplish clouds were popping up. I had no idea how else to describe them, sorry!

The greenish haze - Attack of the clones, right after the ship blows up on the landing bay or whatever, my screen is green with purple tinges. Hope this helps! People wearing white look like they have green/purple lines in their shirt. No matter what I do with menu settings, it doesnt go away.

I am probably not making any sense! :stuckthum

[Kchandra]

with your TV is ZERO the middle or the highest?


As in the middle - zero referred to the number, sir!

[kevinw]

Sorry if you like Prince and that term offended you! :hah33:

green with purple tinges. Hope this helps! People wearing white look like they have green/purple lines in their shirt.
I am probably not making any sense! :stuckthum
I have always been a Purple Haze fan myself :afro:

[kevinw]

I'd swap it out with a new TV... :boo2: You should not have to jump through hoops with a brand new TV.

[Kchandra]

I'd swap it out with a new TV... :boo2: You should not have to jump through hoops with a brand new TV.

Thanks, I agree. I will be at best buy tonight right after work :mic:

Dunno, if I should get another D-ILA and chance it or just get the mitsu DLP.... :sobbing:

[kevinw]

Thanks, I agree. I will be at best buy tonight right after work :mic:

Dunno, if I should get another D-ILA and chance it or just get the mitsu DLP.... :sobbing:
My neighbors has the Samsung 50 inch DLP -It looked real good, I like the Mits too.

[Ratman]

Not breaking your chops, but "haze, tinge and clouds" aren't terms I've heard to describe macroblocking.

And this 'old guy' does appreciate a lot of tunes by Prince (or whatever he calls himself now).

[rudyusmc1980]

Dilas have a known problem with the HDMI port when connected to Satelite boxes. Perhaps your DVD player has a problem too. There is a fix for this, but it will require a tech to install it.

As for your greenish haze, it may be Chromatic Abberation. Basically, the lense is acting like a prism instead of a lense. Is the right side of your screen reddish? left side green, right side red was how my 61" behaved. There is an upgraded light engine that is supposed to fix this. Up until your post, I have only heard of 61" dilas having this problem. October 2004 and later dilas were supposed to have fixed this.

You should insist on getting a new TV, and one that is manufactured more recently. I went with the mits DLP after I had two bad dilas, and a philips before that...

[Kchandra]

We went to best buy and they said they would take it back, but they had none in stock. They called another store who said I could have one from them and just return mine back to them.

I asked to tell me serial no.'s first and picked a newer one which started with 169 which is a november 2004 version.

I came home and boxed the old one up, setup the new one and immediately I can tell there is no green haze in attack of the clones or hidalgo. Picture seems brighter as well in general. We will take the old one back tomorrow.

I determine that the macroblocking exists with the denon dvd-1910 even in analog mode with progressive scan on. The picture is much more enjoyable with my sony non-progressive player. I plan on returning the denon to ultimate tomorrow and maybe trying the samsung and toshiba to see if it still exists. I may try one of the progressive panasonics without upscaling as well.

But, here comes the sad part:

As I am watching TV getting ready to go to bed, I see a black fuzzy object in the top middle of the screen and get up to clean it thinking it is dust of some sort. But, as I get closer to the screen, I realize it is behind the screen. Its about 2mm in length and looks like a thin piece of cardboard or something stuck back there. Yes, I tried scrubbing gently with a kleenex and determined it is behind the screen. This is going to bug me now.

With dark backgrounds it cannot be seen, but on bright stuff, it is very visible. If a movie is widescreen, you cannot see this speck. Its not a pixzel problem, it seems to be dirt of some sort. I will try to get a picture!

I am just keep this TV and try to live with that imperfection! God knows!

Sorry for the whining!

Good nite!

[Kchandra]

Not breaking your chops, but "haze, tinge and clouds" aren't terms I've heard to describe macroblocking.

And this 'old guy' does appreciate a lot of tunes by Prince (or whatever he calls himself now).

Well, I apologize and I have learnt the actual term. So, it won't happen again! Hope I am forgiven!

[rudyusmc1980]

At least have them come out and look at it. you should not have to put up with any imperfections.

[Kchandra]

Believe it or not, it was dust. Some guy on the AVS forums had the same issue and he suggested tapping the screen and "chasing" it away. That actually worked! I am giddy!

[lingen]

What is Macroblocking???

[Ratman]

What is Macroblocking???

using the "search" function, most answers can be easily answered:

http://www.hdtvoice.com/voice/showthread.php?t=14365

[tsedlmeyer]

I just received my JVC 52Z575 yesterday and saw a similar purple effect when viewing DVD's. I have a LG DVB418 DVD player hooked up via HDMI. I was able to eliminate the purple by lowering my brightness to -13.

[Mango Infidel]

I just ordered my 52Z575 from Best Buy last night. If I see any purple effect whatsoever, or any strange artifacts behind the screen like KChandra saw, I'll be takikng full advantage of my service plan and having them replace the unit. $3000 is too much to be stuck with a defective TV.

[tokiozulu]

I just got my 61 incher today - same thing. Picture was good out of the box and as soon as I started to adjust the picture settings the cloud and hazy macroblocking started. green and purply-red Cant get rid of it - needs a service tech is what they said. Cable and DVD source same deal.

[thabiz]

I have the exact same thing......purple "clouds" around the edge and at the bottom of the screen.....JVC 30W585......moved everything from around the tv away and its still there. One day it will be there and then its gone for a couple of days, and then back for a couple more days. Driving me insane!