CurtPalme.com Home Theater Forum

[atotaldoofus]

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Does my raster coverage on the tubeface need to be exactly 4:3 for me to have an accurate projected image?

Okay, I'll order the DVD tomorrow morning!

[imprez25]

It should be the same ratio as your screen. However, most people will try to get the raster centered and then a rough idea of the horizontal size set by looking at the tube face. Then they move the projector to the location that fills the screen's width. From there we adjust the vertical height of the raster to fit the screen. Keep in mind though that if your rasters are completly maxed out the keystone and convergance adjustments may move the raster off the tube face. So, you may have to set the width a couple of times before you get it right on (I typically look into the lenses instead of removing them, but that's just how i do it ).

Good call on ordering the video. Graham coveres the whole geometry thing fairly well. He and his helper go through and show you how to measure the projected image to make sure you are getting "perfect" geometry.

Another resource, I'm sure you have read, but I thought I would mention it is the "mooneyass" article (I think that's how it's spelled?) It is a very good write up on how to set up these projectors. Plus it introduces some custom tweeks for increased corner focusing abilities.

Edit: here is the mooneyass article it's worth the read: http://www.curtpalme.com/docs/Sony_1270Q_CRT_Projector_Setup_Manual_April.pdf

[prover]

Hi atotaldoofus,

I would suggest you look for someone nearby to help you manage the first setup. I suppose this could be very helpful for you. Articles like the one from mooneyass are very good but consider that some of the procedures described there aren't so simple and harmless as they seem (e.g. astigmatism adjustment). Therefore let someone help you if you don't feel comfortable handling with lethal voltages and so on.

prover

[jkruger]

+1

[atotaldoofus]

Hi again!

Okay, I am making some good progress now - hampered only by the fact that I still haven't gotten a screen! I'm just having a tough time finding one to fit my needs.

Anyhow -
My blue seems VERY blurry despite my adjustment of the wingnuts on the lens apparatus. I suspect that I need to turn the wee little knob that blue has for electric focus. But the manual says "DO NOT EVER TOUCH THIS KNOB!" because it means that I'll have to readjust the white balance.

But if I do Curt Palme's tweak using the voltmeter, will that result in sufficient correction of the white balance, such that I can afford to experiment with this knob?

Sorry for asking another question, but this seems like the kind of thing not likely to be covered by the video.

Also, my blue seems to flicker just slightly every once in a while. That can't be good! What could the problem be?

Thanks!

[dturco]

Is this My replacement?

[atotaldoofus]

I don't understand what you mean, sorry.

[dturco]

I should be the last person to tell someone to slow down. But you are going really fast at this. The people here can only guess at your abilities, myself included. It might be a good idea to have someone familiar with your machine at least look at it with you so you don't accidently touch something dangerous.

I did have someone show me the basics on my Marquee 9500 within the first 2 weeks of owning it. I am moving to fast for the comfort of many people here. And it looks like you are going to replace me with that distinction.

My response is a jovial take it easy.....

[atotaldoofus]

I think I'm taking it easier now - but I don't see how my latest questions are too weird.
The blue looks blurry also on the tube face, even before it's projected. I just don't know if that means I have a serious problem.

[dturco]

[atotaldoofus]

Okay! Thanks for your helpful attitude and kind words!

I have contacted someone who does not live too far away, maybe he can help.

My funds and my living space are more limited than most peoples' so that accounts for some of my anxiousness. I can't really arrange my living room until the projector setup is finalized, and if the blurriness and jitter in my blue tube is indicative of a serious problem than that means I need to start factoring in the time and expense it will require ASAP.

Curt's guide makes it sound like the voltage adjustments aren't too dangerous; the knobs are plastic, and a voltmeter doesn't seem too complicated to use so long as you put it right where it needs to go and hold it by the rubber handle. I think I'll be okay! I just don't know how it all relates to the blue adjustment, since the manual is so clear about not touching it.

[dturco]

That's great.

After someone[ Phisin-ca] showed me the basics it was much easier to get a grip on the functions of the remote commands and physical alignment of the lenses.

Seeing a set-up or review done by anyone who has an inkling on that machine is invaluable to the learning curve.

Good Luck

[jkruger]

Does your 1272 have the thick black wire from the LVPS to the ground screw on the fan? If so, your G2 voltage needs to be at 1.5volts instead of 4volts.

[atotaldoofus]

Hi JKruger!

I thought that the way to tell was if your tubes were MP then they needed 4 but if they were just P then they needed 1.5? Anyhow, I'm just not familiar enough with what you're saying to give you an answer, sorry. There are like five fans on this thing!

Speaking of the fans, the small one that's in the long heatsink in the center is very noisy. I think I'll have to open it up and squirt some mineral oil in or something!

[jkruger]

I replaced mine with one from radio shack for about ten bucks but lubing it might work also.

[jkruger]

There are two fans on the top and one of them should have the black wire attached to one of the screws if yours is the later model.

[atotaldoofus]

EDIT: Whoops, JKruger already answered in another post! Hang on...

Okay, thanks for the tip! Yeah, it definitely has a big black wire attached to one of the screws on the fan, and that black wire runs down between the green and red tubes.

Well that's an enormous help! If I hadn't known that, then my settings would be way off! Thanks very much!

[jkruger]

The LVPS is the power supply that you pulled out to get to the lens screws. Low Voltage Power Supply

[atotaldoofus]

Hey JKruger, just posting to let you know that I edited my last post to reply to you. Thanks again!

I can't really do much more adjustment until it gets dark since I don't have very opaque curtains/blinds. But tonight I'll see if the electronic focusing of the blue is out of whack. I still worry about its being blurry on the tube face though - I can't find any information about what might be the cause of that. I hope it doesn't mean it's broken!

[jkruger]

The blue is sometimes defocused to get a better picture. I was happier with it slightly blurry.