| Author |
Message |
speedyandre
Joined: 18 Dec 2006
Posts: 291
Location: Netherlands
|
| Posted: Tue Aug 19, 2008 12:32 pm Post subject: Little distortion on 1292 showing no picture (no input) |
|
|
Hi
When I look in the lenses there are some (moving) horizontal distortion lines visible when an equal picture is expected (with no input signal).
How can I detemine what the source of this distortion is?
It's hardly visible when playing movies and it varies from time to time.
I hope this picture (clickable) explains what I'm talking about 
The 1292 is fired up and it shows a blank screen, also on green and blue this distortion is visible in the lens.
On the screen it's hardly visible because there is almost no light output.
I've tried this with and without an ifb12 card (rgbhv) and that makes no difference.
The gain is pretty high to compensate for a low-emission blue tube.
Brightness is 90 and contrast is 70.
Could it be a ground lead placed wrong or some wires tied together with a ground lead?
My 1292 came partly disassembled so I had to find out myself how all should be wired ....
André
_________________
I'll be broke
|
|
| Back to top |
|
 |
jkruger
Joined: 24 Oct 2007
Posts: 2435
Location: Carlsbad, CA
|
| Posted: Tue Aug 19, 2008 2:05 pm Post subject: |
|
|
|
can't see the picture you posted
|
|
| Back to top |
|
|
speedyandre
Joined: 18 Dec 2006
Posts: 291
Location: Netherlands
|
|
| Back to top |
|
|
speedyandre
Joined: 18 Dec 2006
Posts: 291
Location: Netherlands
|
| Posted: Sat Sep 06, 2008 5:10 pm Post subject: Earthe leads, do I mis some? |
|
|
Can anyone look for the location of earthing cables, I don't know were they should be.
The DC and E boards on top have pins with black earthing cables, were do they go?
Has the metal frame where these boards are mounted in a cable connected to an earthing point?
I really think that a missing cable could cause the distrortion like on my pics.
The problem is that I bought my 1292 almost completely disassembled so I don't know if it is complete 
André
_________________
I'll be broke
|
|
| Back to top |
|
|
stefuel
Joined: 07 Mar 2006
Posts: 3353
Location: Green Harbor MA USA
|
| Posted: Sat Sep 06, 2008 5:16 pm Post subject: |
|
|
Looks like 480P scanlines to me
_________________
Chip
A Barco is only a AmPro with training wheels
Card carrying member of the AVS chain gang.
|
|
| Back to top |
|
|
speedyandre
Joined: 18 Dec 2006
Posts: 291
Location: Netherlands
|
| Posted: Sat Sep 06, 2008 5:31 pm Post subject: |
|
|
Jep that's what it looks like when there is no input signal 
When showing a 1080p hd dvd I can see the same but then it runs slowly from top to bottom.
It comes and it goes, I cannot see it al the time.
André
_________________
I'll be broke
|
|
| Back to top |
|
|
|
|
