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Post by Casethecorvetteman on Mar 23, 2019 12:06:53 GMT -5
Hi all, this flair on my green has returned in my Cine 9 Contrast on about 70:  Contrast on full to show it more:  Last time it did this i had the green gain wound right up because the green had 23,000 plus hours on it, but this one only has 425 hours. Green gain is on about 64, default is 67 i think. Contrast is on 73, brightness on 44. It is no where near at the point you see it during normal video, but its there on very bright objects in patterns etc, where it was not there a few minths ago. What causes this? The blue seems to do it as well. pics are a bit blurry, the iPhone struggle to focus on the screen. |
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Post by gjaky on Mar 23, 2019 15:14:23 GMT -5
Since the anomaly only happens in the horizontal plane, I'd have a strong suspicion that it is video chain related. A marginal cap in the signal path, or leaky clamping circuit, dying video hybrid etc.
I don't know how difficult to swap channels between the video boards?
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Post by Casethecorvetteman on Mar 23, 2019 20:12:00 GMT -5
In some sections not too hard, in others not so easy. Sometimes the wires wont reach.
What do you want me to swap? That might narrow it down a bit more.
Also have a complete working machine set on the floor, it is just not completely assembled, so i can swap out boards too. The switcher card and video card are modded by Gregstv, im pretty sure my spare set theyre standard.
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Post by Casethecorvetteman on Mar 23, 2019 22:10:21 GMT -5
Ive swapped switcher and RGB cards, no change.
Ive got 2 internal MOOMEs, but i very much doubt thatll be it.
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Post by Casethecorvetteman on Mar 23, 2019 23:16:19 GMT -5
Could be the neck boards, but im not totally convinced yet. I swaped red to green and now the red does it very slightly, and the green seems to do it slightly less.
The cables wont reach to swap between red and green, so thats out, cant really be done. Could swap blue and green but both are doing it so that wont show much.
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Post by Casethecorvetteman on Mar 23, 2019 23:35:47 GMT -5
Not the neck board.
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Post by gjaky on Mar 24, 2019 9:31:00 GMT -5
Well, this could be related to the poisoning as well, but if I remember your blue is not suspected as poisoned, right?
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Post by Casethecorvetteman on Mar 25, 2019 1:42:26 GMT -5
No, my blue has no contamination issue here.
Im wondering if the HV is low and that is the cause...
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Post by Casethecorvetteman on Mar 27, 2019 7:12:41 GMT -5
Ok so ive swapped out each board in the back of the set 1 by 1 and no change, i didnt swap the EHT board but i did wind the HV up a touch because it was abit low, that improved it but only very slightly.
The only board i have not swapped out is the MOOME HDMI, would be very suprised if it was that.
What next? If it was a voltage issue id expect swapping SMPS 1 and 2 wouldve corrected that.
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Post by gjaky on Mar 27, 2019 7:26:15 GMT -5
If ou have spare SMPS boards, of course try them, but now a feeling is developing that it will be the tube itself in the end... Note we know basically nothing about the eisemann tubes.
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Post by Casethecorvetteman on Mar 27, 2019 9:58:51 GMT -5
Its not just the Eisemann that does it though, the blue does and its a factory Panasonic.
The SMPS didnt change a thing, neither did SMPS2
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Post by Casethecorvetteman on Mar 27, 2019 10:01:16 GMT -5
MOOME didnt either.
I tried to get it to do it on the RGB HV input with a Sega Megadrive, wound green gain up to max and contrast on max without an issue, its not the OPPO though, the PC does it as well just not as bad.
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Post by robin36mac on Mar 27, 2019 10:01:35 GMT -5
The tube I talked about on my side, was a P16LNP, still a panasonic, but quite different thing.
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Post by robin36mac on Mar 27, 2019 10:20:24 GMT -5
I had a P16 tube that had an issue with black level, I wasn't able to cut it off enough, I'm 90% sure it was that tube.
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Post by Casethecorvetteman on Mar 27, 2019 11:00:50 GMT -5
These are P19LUG tubes, they all still go full black, just that two have contamination.
Greg Eisemann told me to try running the tube break in program for a few hours, that may clear them up a bit, ill give it a go, but that isnt the only issue here.
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