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Discussion Starter · #1 ·
My setup gives a distinctly green tint, especially for

dark material. I have seen other posts in this forum

mentioning green tint. I saw a comment in a manual

that the presence of synch-on-green (combining the synchronization signal with the green channel) could

cause this. This makes sense, because this added signal would be most noticeable in dark scenes.


I am using a Panny TUHDS-20 STB set to RGB mode with

RGB + HV (5 cables) connected through a DIN-15 VGA cable

to an older Hitachi computer monitor. The monitor has

no color control in its on-screen menu, and the TUHDS-20

has no sych options. If I unplug the H,V cables, I get

no picture, indicating that the monitor is getting synch

from these cables and assumes all signal on the green

channel is real.


Has anyone else seen this problem? Can newer monitors

adapt to the synch-on-green signal? Can the DIN-15 connector

be programmed to tell the monitor to subtract the synch ?
 

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Quote:
Originally posted by thomasb:
If I unplug the H,V cables, I get

no picture, indicating that the monitor is getting synch

from these cables and assumes all signal on the green

channel is real.
The monitor is using H&V for sync as indicated by loss of picture when you pull them. But there could still be sync on green. The monitor won't lock to it because is has no sync seperator but the sync can cause a green tint if the monitor is DC coupled and not clamped. Most low cost computer monitors are because the RGB from a computer is always 0vdc referenced.


The only way to tell is to look at the G signal with a scope. If it has sync, there may be a service menu option to turn it off. A call to Panasonic may be your only option unless some other member has some insight to the service mode on the TUSD20.

 
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