CurtPalme.com Home Theater Forum

Melifluonze · Last edited by Melifluonze on Mon Nov 24, 2014 3:12 pm; edited 1 time in total

My 9500LC Ultra (1999 or so vintage, 4.2c software) is up on the ceiling again.

I ended up moving it forward about 6", so the horizontal is now at 100% with the slugs all the way out of the green coils. I have about an inch to go on either side to actually fill the screen, and there's about that much phosphor area left on the tubes too...

Any idea how I can get the horizontal deflection just that small bit larger? Do you think swapping HDMs out may result in one that extends the deflection? Any electronic mods?

(Remember, slugs are already all the way out)

Funny, I would have thought that 100% would have been right to the edge, if not off the face...

I'm running 1080p60, which does seem to make a difference.

- M

Tim in Phoenix · Joined: 21 Oct 2006 Posts: 4409 Location: Phoenix

Hello

Interpolated green convergence will get you another inch or two

**Curt Palme** · Posted: Wed Nov 19, 2014 3:25 pm Post subject:

Try swapping the H board. If the test grid is over the sides of the set, then you have source issues.

Also, running the H width at 100% will reduce the life of the H board for sure, and cause all sorts of intermittent issues. Not a good idea to keep it that close to the screen. I'd run no more than an H width of 80.

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

Are you using a processor? Increase your back and front porch That might help.

Nashou

**AnalogRocks** · Posted: Wed Nov 19, 2014 5:28 pm Post subject:

"Just a little wider"

What is things heard on your wedding night Alex? Laughing

Melifluonze · Posted: Wed Nov 19, 2014 5:47 pm Post subject:

Funny... I've never heard that... Wink

-M

Melifluonze · Posted: Wed Nov 19, 2014 6:00 pm Post subject:

Ok, I'm going to say this... If you can't (shouldn't) run the HDM at over 80%, then there is no point in running 9" tubes... or there is something wrong with my source or with my HDM...

I might as well just use 8" LC tubes... the raster size at 80% is about the same size... Wink

My assumption is that I should be able to FILL the tube face and even drive the internal test patterns off the face of the tube. (See Curt's setup docs where he discusses running the raster off the tube face but the source within the phosphor area...)

My internal test patterns are equal to the size of the source image. Vertical is in the 20's (no Vert. Mod that I can see) and my horizontal is 100...

Curt, just so you know, this is the Vidikron 1 I received from you, unmodified except for an MP 02 VIM and the new HVPS you sent as a replacement... It seems stable, but also seems wrong somehow...

Just to note, all rasters were centered mechanically (itteratively) with flare adjusted and mechanically re-converged. Mech. Setup is good...

-M

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

Did you initialize the set after you put in all new parts?

Some times that clears things up re setting the H size.

nashou

**Curt Palme** · Posted: Wed Nov 19, 2014 6:19 pm Post subject:

Ignore the signal source for now, and check with the internal test pattern. I always check that it fills the tube face at around 80, maybe 85 on the width control. Some H boards do end up underscanning, but swapping that should get your width back. You should get really close to the phosphor edge with the test pattern. Usually the selected source will be somewhat less than the internal test pattern, but that's normal. Every Marquee that I've seen set up over 90 on the width ends up having stability issues, as the HDM runs really hot that way.

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

The processor will do it as well. On my blend when I have a source connected and running, if I put up an internal test pattern they go WAY over the tube face edge at 80 H size. The Marquee will not resize the internal patterns to go with the scan rates or timings of the external fed source. So one way to get around all that is to make large timings in your VP which will also allow you to push the left side ringing out of the image or tube face and it will happen inhale blanking area off the tube face.

Nashou

barclay66 · Posted: Wed Nov 19, 2014 8:50 pm Post subject:

Hi,

There are two additional things that You could try:

- There's a jumper under the HDM daughterboard (P7). By plugging it in You'll get some extra width.

!!! Caution: I haven't tested the following and I don't know if it's reliable on a long-term perspective !!!

- Change R156 (14.3K/1%) to 16K/1% (located under the daughterboard)

I've read of some people that changed some capacitors (the high voltage ones near the MOSFETs) in order to obtain more width. But I don't know which ones and which values to use...

Regards,
barclay66

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

That resistor was a Chris Stevens Mod I believe . Its in his work sheets . Not sure of the Value he used.

Nashou

barclay66 · Posted: Wed Nov 19, 2014 9:03 pm Post subject:

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

Melifluonze · Posted: Wed Nov 19, 2014 10:02 pm Post subject:

I'll try swapping HDMs first.

Nash, the internal patterns do not reach the edge of the tube face. And yes, I reset source memories an re-initialized the projector several times attempting to figure this out.

Curt, the slugs were already backed out, I didn't do it. Surprised me. Seems defective, but I'll find out when I swap.

It doesn't seem unstable... makes me think that even at 100% percent it's not running full-out...

- M

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

Melifluonze · Posted: Wed Nov 19, 2014 11:30 pm Post subject:

Yes. A DVDO Duo. Image is sized to fit inside the raster.

I have played with phase and the size controls, but have not found the timing controls yet...

-.M

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

Not sure if the Duo has that level of control. that is where it has to be done. Also always use the Duos internal patterns to set image in the Marquee. Do not use the internal patters.

But if you insist make sure you go to internal frequencies and select the one that is closest to the frequency
of the Source.

Nashou

Melifluonze · Posted: Thu Nov 20, 2014 3:35 am Post subject:

Nope, using the source test patterns to set things up.

Melifluonze · Posted: Mon Nov 24, 2014 3:10 pm Post subject:

Well... it doesn't seem to be the HDM. I swapped them out and got exactly the same results. That's good!

I see how you can stretch the width a bit in the convergence service menu. Thanks Tim!

I ended up messing around a bit and got it wide enough using the DVDO and phase under PIC.

I figured, if the HDM is at 100%, then using the convergence to increase the width just to reduce the HDM width probably does not change the load on the HDM. I guess I'll have to see what happens...

Thanks Folks!

I'm edge to edge on the phosphor minus a couple mm's.

I think it's the timing of the 1080p60 that's causing the problem.