JohnnyG
Screenwriter
- Joined
- Dec 18, 2000
- Messages
- 1,522
(I've already posted this in another thread here, but thought it could use a seperate thread)
SUCCESS!
I'm positively thrilled to report that Michael is indeed correct! Together, the COLOR, B-Y_G and R-Y_A parameters in the service menu can be adjusted for perfect colour decoder performance!
So simple, yet I was so blind to the solution. Thanks Michael for leading me to water!
Basically, all you have to do is set the COLOR parameter so that red is at 0% (using AVIA colour decoder check), then adjust the B-Y_G to bring blue to zero, then R-Y_A to bring green down.
My before/after numbers (on a PT-51HX41) ended up as:
COLOR: 20 -> 40
B-Y_G: 08 -> 2A
R-Y_A: 02 -> 00
I overcooked COLOR a bit since the user menu 'Color' is now at 25, but you get the idea. because of the limited range of the R-Y_A parameter, it might not be possible to end up with a 'centered' user Color control.
So far, I've only tested this for component input and I don't know yet whether these settings affect all input types or not. I'm pretty certain though, that there are different memories for 480i, 480p and 1080i input.
The picture now looks a LOT more natural. This, combined with this sets nearly flat gray scale, means that it is very accurate colour wise.
The only thing left is to disable SVM and Panasonic has already told me that they can do this.
------------------
John Golitsis
Next Big Thing Electronics
SUCCESS!
I'm positively thrilled to report that Michael is indeed correct! Together, the COLOR, B-Y_G and R-Y_A parameters in the service menu can be adjusted for perfect colour decoder performance!
So simple, yet I was so blind to the solution. Thanks Michael for leading me to water!
Basically, all you have to do is set the COLOR parameter so that red is at 0% (using AVIA colour decoder check), then adjust the B-Y_G to bring blue to zero, then R-Y_A to bring green down.
My before/after numbers (on a PT-51HX41) ended up as:
COLOR: 20 -> 40
B-Y_G: 08 -> 2A
R-Y_A: 02 -> 00
I overcooked COLOR a bit since the user menu 'Color' is now at 25, but you get the idea. because of the limited range of the R-Y_A parameter, it might not be possible to end up with a 'centered' user Color control.
So far, I've only tested this for component input and I don't know yet whether these settings affect all input types or not. I'm pretty certain though, that there are different memories for 480i, 480p and 1080i input.
The picture now looks a LOT more natural. This, combined with this sets nearly flat gray scale, means that it is very accurate colour wise.
The only thing left is to disable SVM and Panasonic has already told me that they can do this.
------------------
John Golitsis
Next Big Thing Electronics