#1  
06-05-2023, 06:15 AM
PeterVR PeterVR is offline
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Hi everyone,

I am very happy with my sony svo5800p vcr, but one thing is a little bit weird. The image quality is very well, but during capturing I see lots of stripes onscreen. The special thing is that this actually only appears with titles. On a normal live-action image, it is a clean image, but with titles I get stripes in the picture. Often the stripes are shown over the titles. Is this a known issue? Could it be due to a mechanism in the VCR, or some form of Macrovision? It looks like the titles are triggering something. In the attachment an example.

I also have got a JVC7600, the stripes not visible on the same VHS. But because the picture quality of the Sony is better in my experience, I always prefer my Sony.

Thank you for thinking along!

Kind regards, Peter.


Attached Files
File Type: mp4 Capture0001.mp4 (76.20 MB, 26 downloads)

Last edited by PeterVR; 06-05-2023 at 06:25 AM.
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  #2  
06-05-2023, 10:23 AM
latreche34 latreche34 is offline
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Are the tapes S-VHS, If not the only thing I can think of is you got a bad VCR. Looks like the chroma is clipping, destroying entire lines including the HBI signal.

https://www.youtube.com/@Capturing-Memories/videos
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  #3  
06-06-2023, 04:13 PM
PeterVR PeterVR is offline
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No it's a normal VHS tape. Allright, a bod VCR, that's a disappointment of course. Some tapes are played back very well and without any issues, but always when there are titles (as you saw on the attachment) the VCR is going crazy. No one knows how that could happen? So what is damaged in the VCR?
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  #4  
06-07-2023, 02:49 AM
latreche34 latreche34 is offline
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Possibly bad capacitors at the power section that feeds the video board or bad capacitors at the video board itself, It is not an average person repair job, you have to have the technical skills to attempt something like this.

https://www.youtube.com/@Capturing-Memories/videos
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  #5  
06-07-2023, 02:07 PM
PeterVR PeterVR is offline
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Thank you for this technical answer! Maybe it could be an explanation (or not), but a month ago an AV repairer replaced some capacitors in the power supply and repaired brittle solder joints. You mention that this person has to have the technical skills to attempt something like this. Could it be he did his job not right and caused the problems I described? Or couldn't that be the cause of this?
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  #6  
06-07-2023, 07:10 PM
hodgey hodgey is offline
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If it was service on the power supply it's probably not all that likely that they caused this. Did it only start happening recently? It looks like demodulation noise/issues (which causes the TBC to freak out). It could caused by aging capacitors in head amp or early stage video circuitry, excessive head wear or some component drift but hard to say what exactly.

My Video gear overview/test/repair/stuff yt channel http://youtu.be/cEyfegqQ9TU
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  #7  
06-08-2023, 02:25 AM
PeterVR PeterVR is offline
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Well, then I can conclude it is not a known defect for which a direct cause can be indicated. Do you think a specialist technician can look into this and fix it? Or is the machine so old (in terms of parts supply) that I better accept that the machine has died and have to buy a new one?
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