Fudoh's ode to old display technology

[22point8]

Use a gray ramp pattern, gain affects white balance towards white, bias towards black.

http://www.curtpalme.com/forum/viewtopic.php?t=10457 this explains it.

[Einzelherz]

Thank you for this info. I'm messing with it using the 20L2 as a reference (its grey ramp looks very good) and I've slightly improved it, but it's now a little green.

I very much regret not writing down these values before...

And now that the grey scale is decent, the SMPTE color bars look like ass.

[KatKya]

On the topic of fiddling around in service menus, I need to stop being so lazy and do so to my OEV203. Only big reason I want to is to adjust it's Component handling; For whatever reason, the person who owned it before(or the person before that) had it set to give a more yellow tinge to a lot of stuff; I'm sure it's related to these settings in particular since feeding it transcoded RGB gives a relatively matching picture and color levels to my other monitors.

Any ideas what setting or settings would be specifically affect that? I'm expecting it (the service menu) to be an exact copy of that of the M2MDU, since everything else on the monitor is.

[jedman]

Wonder how the picture from a HD CRT BVM compares to OLED?

Pretty amazed by the contrast levels of my BVM.

[nissling]

OLEDs are clearly superior to CRTs, which is obvious even by entry-level standards although some models suffer from banding and vignetting which can be seen on test patterns but are less prominent with standard usage. With LGs current B6 series I honestly see no reason for CRT anymore other than nostalgia or just for the sake of it.

If we're talking contrast, OLEDs are about as good as it gets by current standards. Blacks will stay at 0,00fL with no issues yet whites can clearly go 120cd/m^2 if needed. Also the LG OLEDs that I've seen have very effective anti-reflex filter, making the image fully watchable even in a bright environment while a CRT will give completely intolerable results at the same time. In a dark room a CRT have very good on/off contrast but ANSI contrast have always been considered poor on CRTs, especially compared to modern displays. Personally I see CRTs as a fun hobby, not as a flawless display technology (such a thing doesn't exist).

[DoomsDave]

I finally got a PSU for the Extron 190F in my hands but I'm having some trouble with it. Everything I try reacts with the same distorted picture and colour. I've only tried on the PVM 20L5 so far but everything else I've thrown at it through RGB has worked fine.

I've tried DC VGA -> 190F. Extron RGB and S -> PVM RGB and ext sync. Tried all the dip switches and the picture stays distorted.

Then I tried Extron RGB + H and V -> PVM RGB and ext sync with a t-splitter and I get the same result.

Also tried Extron RGB -> PVM RGB with the SOG switch enabled and get the same.

I've attached pics below. I feel so dumb after all this. Any help would be appreciated.

http://i.imgur.com/VYIxLF5.jpg

http://i.imgur.com/fitCJCv.jpg

edit: pics were massive

edit2:

I've messed around with it and I think I've found the issue. It's only displaying the colour from blue and red but not green. I take the red cable out and the screen is blue, take blue out and it's red, take both out and it's black and white. I'm going to try and find some new cables but these are new and fresh so not getting my hopes up. Is my Extron broken?

Tried it on my LCD and got the same result - http://i.imgur.com/KhWt3xl.jpg

edit3: new cables had the same result

[jedman]

Anybody noticed slightly wavy edges on the left and right sides of the vertical border of the screen on 4:3 games on a BVM-D24?

[DatPhosphorGlow]

Anyone have the service manual PDF for a BVM-20F1U? I have an ever so slight picture shake issue I'm trying to figure out.

Has anyone experienced what I'll call "micro vertical shake"? It's hard to notice unless you get real close, and use the physical bezel as a point of reference to tell that the picture is shaking intermittently. I'll try to get a proper video with a tripod and a macro lens if no-one has a clue what I'm talking about.

Fingers crossed it can be fixed, monitor is perfect otherwise.

[KatKya]

Anyone have the service manual PDF for a BVM-20F1U? I have an ever so slight picture shake issue I'm trying to figure out.

Has anyone experience what I will call "micro vertical shake"? It's hard to notice unless you get real close and use the physical bezel as a point of reference to tell that the picture is shaking intermittently. I'll try to get a proper video with a tripod and a macro lens if no-one has a clue what I'm talking about.

Fingers crossed it can be fixed, monitor is perfect otherwise.

Here ya go.
http://www.mediafire.com/download/s0973umfjap06cb/

[DatPhosphorGlow]

Anyone have the service manual PDF for a BVM-20F1U? I have an ever so slight picture shake issue I'm trying to figure out.

Has anyone experience what I will call "micro vertical shake"? It's hard to notice unless you get real close and use the physical bezel as a point of reference to tell that the picture is shaking intermittently. I'll try to get a proper video with a tripod and a macro lens if no-one has a clue what I'm talking about.

Fingers crossed it can be fixed, monitor is perfect otherwise.

Here ya go.
http://www.mediafire.com/download/s0973umfjap06cb/

Merci merci!

[AndehX]

Anyone have the service manual PDF for a BVM-20F1U? I have an ever so slight picture shake issue I'm trying to figure out.

Has anyone experienced what I'll call "micro vertical shake"? It's hard to notice unless you get real close, and use the physical bezel as a point of reference to tell that the picture is shaking intermittently. I'll try to get a proper video with a tripod and a macro lens if no-one has a clue what I'm talking about.

Fingers crossed it can be fixed, monitor is perfect otherwise.

Actually, yes, if its the same as what i'm experiencing. I don't think its an issue with the monitor though because I had the same problem on my PVM-20N5E as I do with my BVM-20G1E.

Does it looks like this? https://www.youtube.com/watch?v=rDCXKsWXZ8A

(Look VERY closely at the METROID logo)

[Einzelherz]

Can a CRT have a dead "pixel"? I just got a JVC monitor and there's a pixel that won't show blue. It'll display the other two colors fine though.

[BazookaBen]

Can a CRT have a dead "pixel"?

Hmmm, I realy have no clue, but I wonder if it's a spec of dust lodged in the slot mask? I'm sure CRT's were made in dust free environments, but maybe every now and again a spec would find its way in.

[atheistgod1999]

Can a CRT have a dead "pixel"?

Only if a pixel of the same digital resolution was displayed until the phosphors in that area were completely worn out.

[DatPhosphorGlow]

Does anyone have the official PDF release of the "Operation and Maintenance Manual" for the BVM-20F1U? The scanned version is a bit difficult to read when printed.

Anyone have the service manual PDF for a BVM-20F1U? I have an ever so slight picture shake issue I'm trying to figure out.

Has anyone experienced what I'll call "micro vertical shake"? It's hard to notice unless you get real close, and use the physical bezel as a point of reference to tell that the picture is shaking intermittently. I'll try to get a proper video with a tripod and a macro lens if no-one has a clue what I'm talking about.

Fingers crossed it can be fixed, monitor is perfect otherwise.

Actually, yes, if its the same as what i'm experiencing. I don't think its an issue with the monitor though because I had the same problem on my PVM-20N5E as I do with my BVM-20G1E.

Does it looks like this? https://www.youtube.com/watch?v=rDCXKsWXZ8A

(Look VERY closely at the METROID logo)

I'm currently on a laptop with a small screen, was difficult to see, but as is the shake of my BVM in person. Will try again on a larger monitor. Is your shake vertical, horizontal, or both? The thing is, my BVM D14 does not shake with the exact same signal. What did you do to remedy the problem?

[kardus]

With LGs current B6 series I honestly see no reason for CRT anymore other than nostalgia or just for the sake of it.

Price, for one

[Einzelherz]

Anyone have a service manual for JVC TM-H150CG? The 1750 or 1950 versions might be the same or as useful.

[nissling]

Price, for one

Doesn't really make a lot of sense imo. Most CRTs you will find are utter crap, and the few ones that are good will most likely be difficult to find (depending on where you live) or expensive. Besides I find it difficult to believe that anyone would use a CRT as their primary display. I may have preconceptions but that's the impression that I've gotten from pretty much everyone I've ever met the last five or six years.

[chuckster]

I'm at work right now, but I'm sure it has been posted or linked to on the GAF CRT thread recently, given the recent glut of them on Ebay. I used a TM-A101GU service manual myself, it has the same Service menu options and codes. I can't seem to find one of those off-hand either though.

[AndehX]

I'm currently on a laptop with a small screen, was difficult to see, but as is the shake of my BVM in person. Will try again on a larger monitor. Is your shake vertical, horizontal, or both? The thing is, my BVM D14 does not shake with the exact same signal. What did you do to remedy the problem?

I've not fixed it. No idea what's causing it. All I can think of is some sort of ground loop but I have no idea how to fix that.
It seems to just be horizontal shimmering, but its noticable on static images. It only occurs in 240p signals too.

[Einzelherz]

I'm at work right now, but I'm sure it has been posted or linked to on the GAF CRT thread recently, given the recent glut of them on Ebay. I used a TM-A101GU service manual myself, it has the same Service menu options and codes. I can't seem to find one of those off-hand either though.

I haven't yet had a chance to look on my PC. Only my phone so far and I'm not coming up with much.

[Blair]

*sigh*

I'm so tempted to buy these large presentation monitors but, I can barely lift the CRT I already have, although my inner child is screaming at me to acquire them.

it seems like if I wait for the next two years I can probably get a much larger LED/OLED television that's close to my motion resolution and input needs ( from what I've been reading in the television threads and a few other tech blogs).

they're probably in pretty rough condition anyway (from what the seller told me). but having one of these was always my dream as a kid.

[cfx]

.

[Blair]

I've heard that the ViewSonic models actually outperform the NEC in certain situations (and they do have native 15khz inputs) but even though there are listed as 29 inch displays, they only have 27 inches "viewable" (is that the same for the NEC models as well? I've never seen one in person before)

regardless, I probably can't lift anything heavier than what I've already got. (I already pulled something in my back this year hauling heavy electronics for a friend, ouch!)

[atheistgod1999]

I've heard that the ViewSonic models actually outperform the NEC in certain situations (and they do have native 15khz inputs) but even though there are listed as 29 inch displays, they only have 27 inches "viewable" (is that the same for the NEC models as well? I've never seen one in person before)

regardless, I probably can't lift anything heavier than what I've already got. (I already pulled something in my back this year hauling heavy electronics for a friend, ouch!)

Dude, you know I found one at a church I was doing community service at? I posted about it earlier in this thread.

[FinalBaton]

Yes, the NEC also list the total screen size and not the viewable screen size : XM29 has 27" viewable, XM37 has 35" viewable, etc

[cfx]

.

[Blair]

Dude, you know I found one at a church I was doing community service at? I posted about it earlier in this thread.

ah, nice find. but those pictures were a bit on the close side, I could've used a few far away and medium shots. lol

sounds like you weren't you able to wrestle it away from them?

[Blair]

Got myself a new lens some weeks ago and tried it out by then, but it wasn't until now that I had a look at some of the CRT pictures I shot.
This one turned out pretty cool. It's actually an RGB modded PC-Engine.

[image]

whoa, that does look pretty cool.


here's a shot of my Sony e400 in 240p mode (the downside of 240p mode with this unit is you can't see monitor settings, so you have to adjust them blind. not entirely sure why Sony designed it that way, but the menu is visible in 24khz mode and higher)

240p is also much brighter (like twice as bright) and sharper with pixel graphics, so I included a 480p picture for comparison. (in the spoiler tags)

Spoiler

]

Spoiler

[bobrocks95]

whoa, that does look pretty cool.


here's a shot of my Sony e400 in 240p mode (the downside of 240p mode with this unit is you can't see monitor settings, so you have to adjust them blind. not entirely sure why Sony designed it that way, but the menu is visible in 24khz mode and higher)

Unless I'm looking at the wrong thing it's really supposed to be 30kHz+ only, so you're lucky it supports 240p.