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Hitachi LCD V500 Issues Thread - Page 6

post #151 of 1811
Moo Man-
spike's right...you might wanna double check and make absolutely sure things are cool. Still good write- up, though. Ahardt out.
post #152 of 1811
Spike, Ahardt, we are all on the same wave length. That is precisely why I tried to get on the phone with the Hitachi rep to find out what the heck had happened. As I don't understand what changes he made to the SM mean, I can't tell if it was a patch to a problem with the light engine, or, if the problem was, settings in the SM spontaneously changing. Unfortunately, I didn't get an answer.

Trusting the fact that I have had this TV since October, and, have read just about every post in the old Hit. Owners Thread, you have got to believe me when I say, there definitely was a problem unlike any I had ever seen prior.

Maybe the reason I was not more demanding of an answer from Hitachi (remember I couldn't actually talk to them) is that I have a four year warranty with Sears. I know if push comes to shove... they still have "Satisfaction Guaranteed".

Maybe my symptoms were the exact same as Spikes, with a different root cause, but, my service tech. had just replaced a light engine the previous week on a TV with the same problem, and thought he would have to replace mine. He was just as surprised as I was that the problem was fixed through the SM.

As to my picture quality now, it seems better than it ever has! I'm sure that is just because I've been watching it for a few days in pink and was starting to get used to the pink. I do think its safe to say, its as good as when I got it. Now, if anything comes up in the future, rest assured, you will be the first to know.

I was hoping someone would see the changes that were made to my settings and verify that the settings were just put back to where they were supposed to be, or, my new settings are different from the stock settings. By the way, I have a 50v500.

-Moo.
post #153 of 1811
Quote:


Originally posted by grizzledbiker
The 4 units available at UEC WEB were gone with in an hour. Wonder if any were ordered due to my above posting?

So what are you pretending to be interested in now?
post #154 of 1811
I had an identical experienece to Moo Man. 50v500; magenta image, no green. Based on the posts I had seen, I was expecting the worst with a light engine replacement. Sears tech came out, went into the SM, did something (!?) and all was well. I wasn't there to witness what he did unfortunately. The image is now perfect.
post #155 of 1811
Sounds like Hitachi got tired of replacing 1500-2000 dollar LE's and actually figured out what the problem was. Still a little a funky how the SM could change sporadically like that. More likely some electronic component failed and they found out how to bypass it by SM settings. At any-rate, glad to hear that Hitachi has made progress on this, just a little disappointed us early guinea pigs had to fight so hard to get this fixed. Live and Learn.

-Spike
post #156 of 1811
Quote:


Originally posted by Moo Man
...He gets into the SM and goes to what I think was labeled LCD DRIVER. (I still think the Hitachi guy just wants to make sure I didn't mess with anything). Then he goes to DEVICE ADJUST. First thing there is SIG CR which he changes the value to 01D. (At this point, I realize he is going to try some things...quick, find a pen and paper). He changes SIG CG to 01D, BRT RO to 000 (maybe he just left that there), GAIN RO to 0BC and GAIN GO to 0BC. There is a chance he may have changed one final setting that I might have missed...
...My main question was, did something happen to the light engine and this is an adjustment or patch to compensate for the problem? or, did something happen to knock these particular settings off?

Excellent observations, MooMan.
I have had a similar experience, but my tech hasn't even tried the SM yet. (we're negotiating a new appt.).
My temporary solution to a "pink push" problem was to tweak the Red Drive values *down* for all the video modes. I did this by eye using the gray bars as a reference. When the gray was neutral, I powered off and on again. Decent color, but not world-class.
I am waiting for the official fix--hopefully, Hitachi will send me a new Light Engine, cuz I don't want to deal with randomly adjusting RGB values occurring in the future!
I'm also philosophical on these repair issues. The units are so new the service industry doesn't have any real experience yet. So as long as they are smart enough to get the real Hitachi fix, they should be able to better serve us. Anyway, pioneers have to deal with lots of sh!t; no paved roads where we go, eh?
--Rat
post #157 of 1811
Quote:


Originally posted by spikedog007
mooman,

Just so I understand this. A few tweaks in the SM and all is working fine? Seems a little fishy. If this indeed was a known problem that the fix was replacement of the LE why would a few minor SM tweaks fix it...

... I guess I just don't understand how all of the sudden SM settings would get changed and the pink push would occur...-Spike

Spike, hey I still have pink push, and am still waiting for the tech to fix it right. But I've adjusted the grey level pretty well in the SM, by lowering the red drive levels on all the video modes (see my reply to Moo man). Good enough for now.
Of course, I restore the original values whenever the service guys come around -- I'm not doing their work for them!
--Rat
post #158 of 1811
That's how I lived with mine for a month (sm/lower red). There where still allot of serious issues though. Like I tried to explain to mooman, there was this strange streaking of colors. Very noticable when image was against white background like watching a hockey game.
Also this didn't fix the lack of greens, very noticable when watching football, grass was brown.

-Spike
post #159 of 1811
This is great feedback on the red push. Has anyone noticed a flickering effect? It occurs on all channels and is more dramatic in scene shifts and darker images. It looks like the screen gets brighter for an instant.
post #160 of 1811
This is great feedback on the red push. Has anyone noticed a flickering effect? It occurs on all channels and is more dramatic in scene shifts and darker images. It looks like the screen gets brighter for an instant.
post #161 of 1811
Quote:


Originally posted by Gentlemanbrew
This is great feedback on the red push. Has anyone noticed a flickering effect? It occurs on all channels and is more dramatic in scene shifts and darker images. It looks like the screen gets brighter for an instant.

GB-
BE (black enhancement) has been known to cause this flickering effect. If you feel your pic is too washed out once you turn BE off, then get a disc and tweak your pic (get one anyway if you haven't already). The first thing Joe Kane advises is to turn off all enhancements. Doesn't mean ya gotta do it, that's just what he recommends doing to get a pic that is closest to SMPTE standards. Also, you'll get a more "saturated" pic with a better/best quality feed.

If that doesn't fix the flickering, I dunno what's up. Maybe somebody else would. Let us know.

Oh, BTW, what they are talking about isn't red push. It's actually a fairly severe issue with something- I guess with what and exactly how severe is still up for debate. What they are talking about is not, I repeat, is NOT red push. Thank you for your time and attention.
post #162 of 1811
Quote:


Originally posted by Ahardt
GB-
BE (black enhancement) has been known to cause this flickering effect.

Yep, Ahardt's right on as usual. I can also add that I have black enhancement set to low on Video 3 which is our DirecTV input and we get some flickering as the feature is adjusting to the composition in a new scene with shadows or black objects. I used Avia to (quickly) callibrate the DVD input on Video 2 where I do not have BE or any other enhancements set (as Ahardt suggested is recommended for best quality against the standard). I have to go back and tweak a bit more since I found my black levels were just a bit too low and some detail was getting lost in dark scenes. I based my TV input generally on the DVD input settings with some differences that looked good to the eye + as mentioned above, I set the BE to low. The flickering can sometimes be a bit annoying but overall I like the look for now. I may re-examine the TV input and tweak things up eventually without BE set at all.

By the way and update on our efforts to go HD to Ahardt and anyone else who's read my week 3 update. We were scheduled for the HD upgrade from DirecTV on Saturday but the appointment was hijacked by incompetence with a pinch of stupidity thrown in for bad measure. Despite my efforts to make sure they noted on the work order that a 4x8 multiswitch was needed (and it was although it just said "multiswitch upgrade" which should have been sufficient to somebody on the ball) and being told that the guy would have one with him, he showed up without one. It sucked but I totally prepared my wife that I expected he'd show up without it. For our trouble, DirecTV gave us the Showtime packgage for free for 3 months (cool more HD when it's finally installed!).

We're rescheduled for tonight. I've already put the Phase III dish together with the proper azimuth, elevation and tilt set amd I even have fish line run to the basement from the family room to try to make his job easier. I had DirecTV call the install company yesterday to remind them about the multiswitch and to confirm the time. They said they'd call me if there's any problem. We'll see tonight. HitHo's - appreciate good group karma for good luck tonight and positive energy so we can finally get our first look at HD on a v500!

Wired
post #163 of 1811
Hello,

Glad I have found this site for sure. I am the owner of a new 50v500A for about a month now and I love it! I think I was lucky as I have had no real issues with the unit. Digital picture and DVD's look fantastic. I do now however, notice something in the image. I am not even sure if it is a smudge but it comes and goes. I noticed something on the image that was only visible on light backgrounds in the same location. I thought my screen was dirty so I wiped it down (using a special soft cloth, no liquids) and the "mark" went away I thought maybe it was dust or something on the screen. Over the next week or so this "mark" slowly came back, in the exact same spot and same shape, it appears to become more pronounced the more the set is used. I am not sure if this is one of these smudges that people are referring to or not, it if is, how come when I clean the screen it seems to dissapear AND howcome it comes back agian? Interesting issue, I have a picute of the clear screen with no mark and this PM i will take a picture of the mark(s) as they seem to be comming back again. Any thoughts??
post #164 of 1811
take it apart and clean inside of screen
post #165 of 1811
I notice this too on bright scenes in which the camera is panning , you almost get the effect of viewing the image thru a thin sheet of bumpy ice.

Because while the scene underneath the actual screen is moving, because the screen stays stationary, you can almost see some of the dirty veritical streaks....whether they are just dirt, dust, smudges or perhaps just slight shadow reflections of the screen's surface onto the picture, it does get annoying if you notice it.....It almost gives the illusion that the actual screen is not completely transparent.

Does this make sense to anyone?


BTW, how and Should you have to open up the screen if the set is only a few days old?....Should you be something like this on a TV so new?

Finally, has anyone did any SERVICE MENU tweaks to improve their picture even further then what is available in the USER MENU??

I have used Dutchmaster's user menu tweaks and they seem very good but Im always game to do more tweaking!
post #166 of 1811
Don't listen to grizzled. He does not own one of these sets and has no freekin idea what he is talking about. If the problem earlier described is indeed a smudge then it is possible to make it go away with pressure on the affected area. This seems to be a screen separation dealio as best we can tell. For most if not all, it happens on either the left quadrant and/or the right quadrant of the screen and never in the middle. It is most usually in the areas where you might see the gray bars on 4:3 material. These smudgie lookin things are usually noticable only on very light backgrounds.
Most people notice them when they first power up their sets and for most the problem goes away as the set warms up .........hour.......two hours at the most I think has been reported. I believe someone captured a pretty good dig pic of this early on in this thread.

Again, do not take your screen apart to clean as grizzledude suggested!
post #167 of 1811
Manpig,

That is exactly were mine are, small one on the lower right hand side and a fairly large one on the left.
post #168 of 1811
What is the correct filament orientation for the replacement lamp? Will this improve PQ? Is there any truth to the rumor that a certain breed of flatulent monkey may be used to re-fill the lamp gas? (after a six week regimem of vitamins and special diet)
post #169 of 1811
Thanks ahardt and wired. I'll get the calibration disc and try the pic with BE off. It seems I do not get the flickering on DVD but on HD cable (through box) and straight analog or digital cable.
post #170 of 1811
Quote:


Originally posted by grizzledbiker
What is the correct filament orientation for the replacement lamp? Will this improve PQ? Is there any truth to the rumor that a certain breed of flatulent monkey may be used to re-fill the lamp gas? (after a six week regimem of vitamins and special diet)

I rest my case. You are one strange flatulent monkey grizzlefuk. If you truely knew anything worthwhile then you would know there is no option to change the filament orientation. And scuse my azz if your post is an attempt at humour.......ha ha ha ha ha ha ha ha...............i forgot to laugh.
post #171 of 1811
Service Menu Tweaks???
post #172 of 1811
I just contacted Hitachi via the 1 800 number regarding these smudges. The guy at the other end indicated to me that he has never heard about them and the set is so new they are not sure of all the issues yet. I think everyone needs to contact HiT to at least register this as an issue. Then hopefully there will be a MOD that works and we will all be happy. Replacing the screen doesn't always sound like this is a fix for this issue. The replacement screen still has a 50 / 50 chance of the same problem occurring since no change in the manufacturing process has occurred. Just my 500K cents worth
post #173 of 1811
I just took delivery of my new (well refurbished) 60V500A. I am extremely happy overall with the TV. However, the seems to be a very bad red push that I have not been able to tweak out with minor tweaks. A white back ground looks pink????? Does anyone know what this could be?? and how to correct it. I have hooked up a DVD player yet, but I did not hook up my OTA HD recevier and it seemed to be fine. Thanks for all your help!
post #174 of 1811
Thread Starter 
Quote:


Originally posted by Uwish
I just contacted Hitachi via the 1 800 number regarding these smudges. The guy at the other end indicated to me that he has never heard about them and the set is so new they are not sure of all the issues yet. I think everyone needs to contact HiT to at least register this as an issue. Then hopefully there will be a MOD that works and we will all be happy. Replacing the screen doesn't always sound like this is a fix for this issue. The replacement screen still has a 50 / 50 chance of the same problem occurring since no change in the manufacturing process has occurred. Just my 500K cents worth

The only fix from Hitachi regarding these smudges is to replace the screen. They have a new part number for the replacement screen and this is documented on the service bulletin.

For people who have intermittent video problem (power on but no video just audio), the remedy is light engine replacement.

Yes, Hitachi is aware of all these problems.
post #175 of 1811
how do u know if you qualify as someone who has these SMUDGES?

Can someone explain what these SMUDGES are, cause I notice when my screen is OFF there is some smudgey streaking..
post #176 of 1811
Quote:


Originally posted by the4lams
I just took delivery of my new (well refurbished) 60V500A. I am extremely happy overall with the TV. However, the seems to be a very bad red push that I have not been able to tweak out with minor tweaks. A white back ground looks pink????? Does anyone know what this could be?? and how to correct it. I have hooked up a DVD player yet, but I did not hook up my OTA HD recevier and it seemed to be fine. Thanks for all your help!

Post all your user settings and we might be able to see a problem.
post #177 of 1811
Quote:


Originally posted by DarkFudge
how do u know if you qualify as someone who has these SMUDGES?

Can someone explain what these SMUDGES are, cause I notice when my screen is OFF there is some smudgey streaking..

Smudges that we speak of here are visable with the unit powered on. If you first start your unit and go to the screen wipe with the white screen then you can see them on the left and right quadrants as previously discussed. Word of caution: Ahardt believes that using screen wipe will cause bad pixels and more smudges and possibly weeds.
post #178 of 1811
Quote:


Originally posted by fourizonly

For people who have intermittent video problem (power on but no video just audio), the remedy is light engine replacement.


WTF?
post #179 of 1811
Thread Starter 
Quote:


Originally posted by manpig
WTF?

Pig-

This is the problem that I reported about a month ago. So far, I've seen 5+ V500 owners with this "new problem".

The set does not power up correctly. Sometimes I just get a white screen with magenta or green bands and the bands will gradually fill the screen. Then the screen will go completely blank.

During this time the OSD is not visible and changing the inputs does not matter.

You can find this on pg. 4.
post #180 of 1811
Quote:


. . believes using using screen wipe will cause bad pixels and more smudges and possibly weeds.

weeds?? Wow! what next? of course coming from a guy that names himself after some obscure local Pa. band manpig I can see where the weed would factor in. Now I understand why your seeing these strange images.
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