CurtPalme.com Home Theater Forum

dkap · Joined: 14 Aug 2008 Posts: 109

My neighbor picked up a lightly used Sony VPH-1040Q from his work and I'm helping him get it set up to replace his burned out DLP projector. I was able to get everything pretty well calibrated with the help of the manuals here, except for one little detail ... neither the Color or Hue adjustment knobs seem to do anything.

Is it possible for the pots to be disconnected down below on the circuit board, and if so, is there an easy fix? Or is there something else that could be causing those two to have no effect? Every other control works.

(The setup is a progressive scan DVD player connected to an Audio Authority 9A65 component to RGB switch. The colors all seem to be coming through fine, as I can control the brightness on each of the tubes (undocumented dials in the manual, as far as I could tell), just no control over flesh tones and what not.)

Thanks,
Dan

**AnalogRocks** · Posted: Mon Dec 15, 2008 6:46 pm Post subject:

Those controls only work with the video input. Not RGB that's normal.

dkap · Joined: 14 Aug 2008 Posts: 109

Really, you have to adjust it with a composite video cable hooked up? Now I need to pick up a RCA composite to BNC composite cable...

What's the point of locking out the Color/Hue adjustments on arguably the main input? That has me baffled.

Once adjusted via composite, will the settings hold on the RGB input? Right now, everything is a very muted green.

Dan

jkruger · Joined: 24 Oct 2007 Posts: 2435 Location: Carlsbad, CA

**Curt Palme** · Posted: Mon Dec 15, 2008 7:19 pm Post subject:

When you connect via RGBHV, the color and tint sections of the set are bypassed. THat's normal when you use ANY set that has RGB inputs. THere is no tweaking to be done, it's all done via the color signals on the DVD.

But tell me, you can't be running a progressive signal into the set? The Sony 1040 is a 480i video only machine, regardless of the RGB inputs.

dkap · Joined: 14 Aug 2008 Posts: 109

Hmm, so if the colors are not being reproduced accurately via the RGB inputs, something is faulty with the equipment (projector, DVD player, component to RGB switch, or cabling), since the color/hue cannot be adjusted? I guess I misunderstood the first response.

**Curt Palme** · Posted: Mon Dec 15, 2008 8:07 pm Post subject:

If the set does indeed handle 480p, then you can get the Startech transcoder that has color and tint adjustments. THe length of run whether 480i or 480p won't matter. As long as the cable is decent, the signal at the output of the cable will be the same as ingoing.

I've got the Startech specs here. I do have stock.

http://www.curtpalme.com/CRTforSale_VideoProcessors.shtm

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

Everyone for got one thing to tell him. the color and hue controls for RGB are basically the G2/bias and Drive/gain controls for ANY set with RGBHV input, am I correct?

if everything has a green tint then it could be the greens G2 is set to high or the other colors are not set high enough.

Athanasios

dkap · Joined: 14 Aug 2008 Posts: 109

I'll check when my neighbor gets home if there's any control over the progressive setting. We're a bit iced in this week, so that may be delayed...

I did find what would presumably be gain controls for each of the tubes. That's the part I referred to in the first post as not being mentioned in the manual, as far as I could tell. There are three little dials over by the fans, one for each tube. I was able to set the color levels much closer than the previous installer had set them to, but it wasn't anywhere near enough control to get anything resembling a good flesh tone.

Dan

dkap · Joined: 14 Aug 2008 Posts: 109

After a lengthy delay, we revisited the matter and the above suggestions were correct. Using a composite video feed makes the color/hue adjustments functional, making for a MUCH better picture.

That leaves the question of what was causing the extremely green picture...

The DVD player obviously works, but it does not have a switch for progressive scan, so it's possible that the signal being sent was too high of a resolution for the projector to handle.

The component video cable is known to work fine, as it was previously in use for his digital projector which is constantly breaking down...

The Audio Authority switch and RGB cable to the projector have not been verified to work properly. Those would seem to be the most likely culprits, in ascending order, respectively.

I'm going to try hooking his projector up at my place (I've been dragging my feet on getting my projector sent in for repair, and my neighbor is getting a new big screen TV this week and won't be using the Sony projector any time soon), so I'll be able to try it with a different DVD player that has more settings to see if that's the issue. Trying a better RGB cable is next on the list, otherwise I know it at least works reasonably well via composite.

Thanks for the help.

Dan

Tinman · Posted: Sun Jan 18, 2009 9:39 pm Post subject:

Uh... hello..... the 1040 does NOT accept a COMPONENT signal. It'll be mostly green. You'd need a Component to RGB TRANSCODER.

Or get a DVD player with a VGA output jack which CAN put out RGB natively.

dkap · Joined: 14 Aug 2008 Posts: 109

That information would have been useful a month ago. Smile

(I assume you mean it cannot accept a progressive scan signal rather than a component signal, correct? The component cabling itself shouldn't be a problem if the DVD player can deliver a non-progressive signal via it.)

I take it a transcoder does something more with the signal than what the Audio Authority switch does?

Dan

**AnalogRocks** · Posted: Sun Jan 18, 2009 10:52 pm Post subject:

dkap · Joined: 14 Aug 2008 Posts: 109

I think one or both of us is confused, and my money is on it being me...

However, Curt's Startech transcoder link describes it as being identical to the Audio Authority 1365 which is basically a Audio Authority 9A65 (what we're using) but with a scaler. Unless I'm misreading that, the implication is that an AA9A65 should function for converting the component to RGB, which is what the Sony projector expects.

Dan

**AnalogRocks** · Posted: Mon Jan 19, 2009 12:52 am Post subject:

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

Lets try it this way. Your projector has composite, RGBHV and I believe a round connector for video inputs. Regardless of which one you use the projector will ONLY take and display 480i resolution.

So even if you convert a component to RGBHV signal, it still has to be 480i max..

**AnalogRocks** · Posted: Mon Jan 19, 2009 12:56 am Post subject:

Yeah what Mac said ^

dkap · Joined: 14 Aug 2008 Posts: 109

Gotcha. (That takes us back to what I understood Curt to be saying previously.)

However, the question was whether running the Component/AA965/RGB setup can work if a different DVD player has the ability to send a non-progressive signal via the component output, not whether a different cable approach can result in a higher resolution signal than the projector is capable of. The idea being, higher quality cable [than composite] is already routed from the DVD player to the location of the projector, so best to use that if possible.

Dan

**AnalogRocks** · Posted: Mon Jan 19, 2009 2:32 am Post subject:

Right. Many of the DVD players have switchable 480i, 480P on the componenet outputs.

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

What is the higher quality cable that is already run?