Official LaserVue Owners thread - Page 82

He said just filtering the air on the fan intake side is enough.

Does anyone know is there a firmware upgrade for the 75-91 from the original software - and how one obtains it?

thanks

1. To establish what software level you have now. Press MENU and look at the lower left corner of the first menu displayed. That is the softward version.

2. To establish the most current software level for that model go the Mitsubsihi web site SUPPORT and then DOCUMENTS & DOWNLOADS section and look up your model. If software is listed, that would be the newest software. If it is a higher number than you have, it is an updated. If it the same number you have it is the same so nothing for your to do. If they do not list a software, they have never issued an update so again nothing for you to do.

3. If there is newer software available, follow the instructions to download from the web site and upload to your TV. It requires a USB Thumb Drive.

4. If you are connected to the intenet to use the VUDU feature, your TV most likely is already up to date for software as they do this automatically.

Does anyone else suspect the firmware is compatible cross model?
I know the A94 used 13.02 and before I returned it was upgraded to 13.03. The A96 came pre-loaded with 13.04.

You'd think if they were different for different models they would use a different numbering system.
Then again, I probably wouldn't recommend 13.04 if you like your channel guide.

Thank you GEP, this is excellent.

BTW, the link for the LaserVue L75-A91 is here:

http://www.mitsubishi-tv.com/support/documents/L75-A91

It shows that the most recent software version for the L75-A91 is 11.02 and the file name is: V42_11_02.zip

As DoctorM says above the newer A94 and A96 Models use 13.03 and 13.04 software versions. It's not clear from the Mitsubishi website if an A91 owner (such as myself) can "upgrade" to the A94 or A96 software.
.
Edited by Upgrader - 12/3/12 at 9:01pm

The end of the LaserVue - also explains why they swapped out one in an earlier post for a new one for essentially nothing. Wonder how this will effect parts, repair and support.

http://www.twice.com/articletype/news/mitsubishi-exits-rptv-inventory-almost-gone/104133

Not just the end of LaserView, but the end of Mitsubishi rear projection TV's altogether .

Not likely will the software for one model be able to be added to another model (at least without modification to the software).

In most cases, the software and the TVs both have a key tied to the approrate models/software combination. If the two do not match, the TV will not upload the software.

The version numbers being in the same series really do not indicated that two different model years or chassis groups can share the same software. It is not simply software version 13.03 for LaserVue, most likely it is software version 13.03 for L75-A94 and software version 13.04 for L75-A96. Otherwise the L75-A94 would be automatcially updated to 13.04 via the automatic system over the internet.

^^^^

Thanks, I do have S/W Version 11.02 already which makes it the most recent version for the A91 model so I am up to todate.

More on my repair saga:

The technician came by yesterday and replaced the "main board" on my L75-A91 (note that he had already replaced the "light engine" a few days ago). The TV worked great for a few hours but this morning when we turned it on to watch the morning news it started powering down randomly by itself again! It looks like the problem now is with the "power board" which appears to be the next thing to be replaced.

Now waiting on that ...

When my light engine had white dots the tech came and replaced it so when he turn the TV. on it did the same thing as yours I watch him how he took it off and the problem was that the light engine body push an on and off switch that it has to be install in an special way, so tell him about it.

I don't know if it's the right thing or not, but this is what I picked up to filter the intake. (Also got a roll of blue painter's tape.) The filter cost about a dollar.

As you can see it's fairly thin and has a loose mesh. I'm considering double layering it, but I don't know if that's a great idea or not.

Opinions?

I have been reading these comments about filters.

Just as with any DLP type set, yes, they get very dusty inside.

However, I am suspecting someone is going to seriously damage their set with these filters - more so than the dust alone.

Any filter will inhibit airflow. The more mass the filter has, the better job it does, yet it will also inhibit more airflow. Furthermore, the airflow will be inhibited even more as the filter does it job and the filter becomes dirtier.

Most if not all these companies have figured out what type of airflow they need inside the cabinet and plan for such. They will not pay for parts that exceed spec, which is what would be needed in the fan motors if a filter is used. Again, any filter will reduce this airflow.

Furthermore, as the airflow is reduced by the filter, the fan will most likely strain harder to push air through, thus resulting in a fan motor burning out faster than expected.

Even if the fan motor does not go out, the decreased airflow in the unit will cause internal temps to rise and could potentially (and likely) cause a premature failure on a key component - like the laser.

I would only try this if you are willing to accept those risks and have an extended warranty. If you have an extended warranty and they see any type of signs that a filter was added after market, they probably would not pay the claim anyway.

My 2 cents.

That's a good argument, but 2 things to remember. We can see when these filters are dirty and clean them (unlike the components inside that will get dirty without them) and if the temperature gets too high the TV shuts down.

So I'm not too worried about damage to anything. I'm more worried that it'd be damn near impossible for me to access and clean the inside of the LaserVue myself, and a service call to dust it out because Mits didn't want to put a washable filter on these is ridiculous.

Front projectors tend to have washable filter, so why doesn't this?

I dont understand all the hubbub. The manual clearly states how and when to clean the filters.

Seriously? Where in the manual and where are these filters?

Consider the source. Simply download the manual in PDF and search for "filter". After it is NOT found, you will realize that post is incorrect.

Also note the reference in the manual to cleaning where filters are NEVER mentioned:

Cleaning Recommendations

Normally, light dusting with a dry, non-scratching duster will keep your TV clean. If cleaning beyond this is needed, please use the following guidelines:

First, turn off the TV and unplug the power cord from the power outlet.

Occasionally clean dust build-up from the air-intake grilles on the back and sides of the TV. Clean using a vacuum cleaner with a brush attachment.

Top and Sides of the TV
Gently wipe down your T • V with a soft, non-abrasive cloth such as cotton flannel or microfiber, or a clean cloth diaper, lightly moistened with water. Dry with a second dry, soft, non-abrasive cloth.
• For oily dirt, add a few drops of mild liquid detergent, such as dishwashing detergent, to the water used to moisten the cloth. Rinse with a second cloth moistened only with water. Dry with a third dry, soft, non-abrasive cloth.

Screen
• Follow the instructions for the top and sides, wiping gently in an up and down motion.
• Clean the entire screen evenly, not just sections of the screen.
• Do not allow liquid to drip down the screen, as some liquid may enter the TV through the gap between the screen and screen frame.
• You may purchase Mitsubishi Screen Cleaner, part number CLEANER-VSS, by calling (800) 553-7278.

General Cleaning Precautions
• DO NOT allow liquid to enter the TV through the ventilation slots or any crevice.
• DO NOT use any strong or abrasive cleaners, as these can scratch the surfaces.
• DO NOT use any cleaners containing ammonia, bleach, alcohol, benzene, or thinners, as these can dull the surfaces.
• DO NOT spray liquids or cleaners directly on the TV’s surfaces.
• DO NOT scrub or rub the TV harshly. Wipe it gently
Edited by GCAVS - 12/16/12 at 11:10am

Sorry, I misused the term "filters". the manual clearly states how and when to clean the air intake "grilles".
Regular cleaning there is all that is required, according to the manual.

Sooo. It appears for the moment that my artifact was easier to deal with than I thought. (I'm referring to a shimmering line at the top when there is a vertical camera pan.)

In the service menu I adjusted the vertical position of the screen by 4 points and it disappeared. I don't mean that I pushed it INTO the overscan area. It should have still been visible with a 4 point adjustment, it's just gone. In fact going negative by 8 points ALSO would eliminate it but the screen would be less balanced.

I'll have to watch a few movies to be sure, but I think that's all that was require to fix this really annoying problem.

And now a question: It looks like by default there is about 10 lines(?) of overscan above and below and 22-ish on the left and right. Is there a way to reduce the image so there is less overscan on these? I'm surprised there is that much in this post-CRT/HDTV era.

All DLP TVs have the overscan issue.

You could reduce the size on screen with a scaler such as a Lumagen, but you would create more issues in the entire picture you are seeing than the problem of not seeing a small part of the picture. For me, out of sight, out of mind is better than creating a new problem on the entire screen.
Edited by GCAVS - 12/19/12 at 10:11am

I didn't know if it was adjustable like V and H position or something. I know other TVs can be set for 1:1 pixels (for no overscan) or zooming to some overscan.

I previously noticed that 1:85:1 movies show no borders on a Laservue.
Like you said, not really an issue though.

Edit: I guess then the real question is, do I have a problem a real technician should look at, or just accept my own fix as the right answer?

It's under warranty, but Mits service blows, and I suppose there is the real possibility they'll just do the same thing I did.
Edited by DoctorM - 12/19/12 at 10:56am

The DLP RPTV's do 1:1, it's just that some of the pixels are projected outside the screen area. The only way to get the entire picture to fit within the screen boundaries is to scale it to something a bit smaller than 1920x1080. For example, I've found that creating a custom resolution of 1840x1028 within 1080p timings allows my entire Windows desktop to just about perfectly fill the screen (on my 82838) without any content lost off the edges of the screen. But scaling the entire picture to a custom resolution like that will compromise the quality of the entire picture. So you basically have a choice of living with some overscan or scaling the picture and compromising the quality of the entire picture. The reason for overscan of the RPTV's is related to the geometric distortion that's inherent in RPTV's due to the proximity of the screen and projection lenses - the only way to eliminate that would be to make the TV cabinet a LOT deeper than it is and since people are so obsessed over having slim displays, that probably would have killed of DLP RPTV's several years ago.

When LCD's and plasmas are set to 1:1 mapping, the 1920x1080 image perfectly fills the panel (assuming we're only talking about 1080p displays). When those displays are set to something other than 1:1 mapping, they're scaling the image.

Still wondering if anyone else has seen any color pulsing with their LaserVue sets.... It seems to be getting worse on mine. Today it feels like it's repeatedly cycling through different red levels. Very noticeable in flesh tones. It is as if the person's skin is normal, becomes a little flush, then moreso, then a little more, then back to normal. It's about a half second between each "pulse." My set, at start-up, shows the bright red LaserVue image, then it "pulses down" the red level until settling on something, it's always done that, but now it seems it's doing it while viewing, too....

Anyone else seeing this? I'm not sure if Mits is going to do much, if anything, for me. And I'm going to be aggravated beyond belief if I spent this much $ on a set that has lasted me < 2 years...but...I've been eying up the 90" Sharp, so...lol, the wife will kill me, but....

edit: I do have an extended warranty, I suppose I could see what (if anything) they'll do...but, they may not consider it broken. Ugh...
Edited by DreamWarrior - 12/24/12 at 10:06am

@DreamWarrior - Do you use subtitles or closed captioning? In mid bright to dark scenes when subs turn on/off it will cause an overall change in the image (because of internal reflections).

Speaking of, anyone have an opinion about me having shifted my vertical position? Should that be an acceptable answer or should I have then know around with the light engine or whatever to stop whatever is causing the light bleed(?) (Or would they just shift the V-pos if they should up.)

Nope, certainly have noticed a bit how in a very dark scene (credits) that effect. But, this is very different. It really does look like a shift mostly in red...it's like sequenced red push at varying levels. It'll push a little red, then more, then more, then drop back to nominal amount. It could be other colors, too, but I notice the red most because, like I said, it seems flesh tones turn flush.... Happens with all sources. I can sit on my BD player's menu and watch the grey background turn just a little more red.... It's weird. I should probably try bypassing the receiver just to ensure it's not doing it, or moving to a different input on the TV. But, since the TV "pulses" the red LaserVue image at start-up, I sort of equated the two things, and just figured it was doing that during playback, too.... I was just hoping someone else has experienced it and could point me at a fix, cause, or...something. That, or at least confirm/deny that their set "pulses" the red LaserVue logo at start-up. Mine starts really bright, stays on the screen for, say, 5-10 seconds, and, during that time, gets dimmer in a few stages. It's like it comes on a full red, then drops back a bit, a bit more, a bit more, then the actual picture comes on.... I'm pretty sure it has always done this...but, it certainly seems suspect now.

Hi guys, I am hoping this is my final report on my L75-A91 repair saga:

The Mitsu technician came in again today and replaced all the remaining hardware components inside the TV (one at a time). After replacing the final component which was the "Light Source Assembly" the TV came to life in full and vibrant color like I had never seen before. I literally don't remember this TV displaying an image this awesome even when I first bought it.

I have to say that even though it was painful having to go through the recent weeks with our TV being down and out, the amazing picture we are just now getting immediately after the repair makes me forget the "pain" we endured. The Mitsu Customer Support and Service was slow and sluggish but in the end they fixed it and and fixed it good! From where things stand right now, I can tell you that if this TV lasts another 2 years putting out this kind of high quality image I will be very very happy. I have been told (and believe this to be true) that these large-size TV sets have very complex technology and it is not possible to build them with the same reliability that smaller TV sets or the old TVs with CRT technology (circa 1980's) have.

Best of luck to all of you who bought this TV and have a Happy New Year!
Edited by Upgrader - 12/26/12 at 9:26pm

I'm not sure I agree about the reliability comment. I've been following Sony's HX850 & HX950, and your experience seems no worse than people buying these sets. There's also comments about how common issues are with Sharp Elites.

The problem, I suspect is more quality control and how cheaply manufacturers try to build them.

Is there anyone active on this thread any longer that has a A91 and DirecTV?

Problem I am seeing which has driven me nuts since I purchased it, I wonder if its common for all Laservues. It is easier to see on DirecTV and I'd like someone to see if their set exhibits the same issues.

@GCAVS - Um, looking back, what is your issue?

I do...

I have the A91 but not with DirecTV (I have Time Warner Cable).

What is the problem you are seeing?