Component problems with Mitsubishi 60" (1 Viewer)

[Ammon]

I have a Mitsubishi 60" RPTV and have found a problem with my component inputs. When watching dvd's it's almost as if my convergence is off. The red and blues are blurry and makes the picture look almost purple. Is there any kind of tweaking I can do to get the component connection better? Or would I need to call in a specialist? My S-Video connection looks fine. It's not HD so is it best to just hook the DVD up with s-video or should I try to get the component connection fixed? Would anything in the service menu enable me to tweak this at all?

 

[Donnie Eldridge]

Need more details, but for starters check your component connections. Sounds like you may have on of your cables reversed.

 

[Ammon]

Sorry about that! I tried 3 different cables as well as a different DVD player. The picture was the same. However, when I plugged in the s-video, the picture was normal. Which brings me to the other question. How much difference is there between the picture quality with a component and s-video cable? I do not have an HDTV so I am not using the progressive mode on the DVD player.

 

[Donnie Eldridge]

Going from S-video to component video will only provide a subtle improvement. Colors will be slightly more rich and vivid. You won't see nearly the jump in quality as from composite to S-video.

3 seperate sets of component cables? Or, 3 seperate cables? Remember, if your not using actual component video cables(which are color coded R,B,G) it won't work properly.

 

[Ammon]

Yes, they were 3 seperate sets of component cables.

 

[Mike Hamilton]

Donnie Eldridge said:

Going from S-video to component video will only provide a subtle improvement. Colors will be slightly more rich and vivid.

If the Component output is Progressive, on a properly calibrated monitor the difference can be immense. Due to the higher voltage contained in the color difference signals, there will be far more high frequency detail (especially in Blue hues) and the light output will be far greater. With the monitor properly calibrated, more light equals higher dynamic range.

 

[Ammon]

Hopefulyl this makes sense and someone can shed some light on this for me.

After playing around with this, it appears that the convergence for the component video input if off. THe red and blues are blurred on. I can especially tell on the edges of pictures. When I bring up the TV menu, its almost as if the input changes and everything lokos fine. So I'm wondering if the convergence for the component inputs are different that the other inputs. I found the service menu codes to where i can change the convergence on screen without the built in 64 point grid. Does this sound like it could be the problem?

 

[John Royster]

Ammon, what is the mitsubishi model number?

Mits generally have only one convergence per scan rate, so 480i and 480p have the same convergence. But you can always check by bringing up your 64 point grid. Remember, the cancel button is your friend in the service menu.

also could be a problem with the inputs themselves.

 

[Ammon]

Unfortunately my TV isnt HD. The model is VS-60703. I'm looking at this service menu code list....and i'm getting scared just looking at this thing!

 

[Donnie Eldridge]

I'm wondering if what your seeing is the Y/C delay bug Mitsubishi had on some of their units? This problem only effected the component video input. I know because mine had the same problem. S-Video was fine but, whenever I switched to component video similar symptoms appeared. The Y/C delay can be adjusted for your component video input via the service menu. Just right down your settings before any changes are made.

 

[Donnie Eldridge]

Here is a link which may help. Is this what your seeing?
http://www.hometheaterspot.com/htsth...rue#Post321044

 

[Ammon]

I just had the technician from the store i bought the tv at come and look at the tv. He looked through the service menu and then stated that this would be the best picture I would get and that it was considered Industry Standard. I seriously was speechless for a few seconds. He couldnt explain to me why my s-video didnt have this problem. I finally forced him to order me a new video input board for the TV. But seriously, does anybody think this is an acceptable picture?
I have some pictures that might help out. In the first picture you can see a blue haze going across Anakin. The line is right where the blue sky on the horizon seperates from the sand:

This second picture is a close up of the first:

In this third picture, you can see first of all, that the flesh tones, and everything else it seems has a purple tinge to it. The left egdes on Obiwan's face have a red outline and the right side has a blue outline:

Does anybody have any ideas or have seen this?

 

[Donnie Eldridge]

This is exactly the problem that plagued my Mit's when using component video. It's a Y&C delay bug. That banding was never constant it was dependent upon the image being displayed and if I paused the dvd player on the particular scene the bands would disappear.

 

[Ammon]

Were you able to fix the problem? I've heard different cable lengths for each cable may solve it?

 

[John Royster]

Something is definately wrong.

Can you check with AVIA Y/C delay pattern?

 

[Donnie Eldridge]

I experimented with different combinations of cable lengths and adjusting the Y&C via the service menu. What I found was that I could reduce the effect significantly, but not eliminate it completely.

 

[Ammon]

Tonight I'm doing some serious calibration on my TV to see if I can fix the problem. I'll let you know what I find out. I do have a copy of Avia and all the information on the Service Menu. Wish me luck!