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-   -   Red and blue noise on VCR? (https://www.digitalfaq.com/forum/vcr-repair/11235-red-blue-noise.html)

xgamerd600 11-30-2020 09:06 PM

Red and blue noise on VCR?
 
Hi Everyone,

I have a lot of VHS movies and they all have this problem with this red and blue dashes all across the screen (however for example, if the scene is different colors such as orange or blue then they take on that color.)

This has been happening on many VCRs and 2 TVs and different cables, RF and Composite.

Right now I have a Panasonic 4 head PV-D4745S VCR. This only happens with VCRs and not other things such as a Nintendo 64.

I uploaded some footage of it on YouTube:

https://youtu.be/IC2ej9_L8x4

https://youtu.be/hEl--WvxQnc this one is The Matrix

Does anyone have any suggestions?

Thank you

lordsmurf 11-30-2020 09:38 PM

This is "chroma noise". Cheap VCRs are really bad at showing it, especially 2-head VCRs. Panasonic consumer VHS VCRs are have lousy image quality. RF and composite just make it worse, too.

This is precisely why S-VHS decks with line TBC are suggested. It removes almost all of this noise.

This red/blue misty muck is exactly why I learned about S-VHS VCRs and line TBCs back in the 90s. I hate chroma noise, #1 pet peeve of mine.

EDIT: The video showing numbers also has timing wiggle. Again, lack of TBC.

latreche34 11-30-2020 10:26 PM

Is this a SECAM tape?

xgamerd600 12-01-2020 12:41 AM

No it is a NTSC tape

Quote:

Originally Posted by lordsmurf (Post 73118)
This is "chroma noise".

Do you know if there is any interference that causes this? My friend has a consumer VCR and it doesn't do this.

hodgey 12-01-2020 02:07 PM

It does look a bit excessive, even for a standard VCR. Aging electronic components in the VCR (or TV for that matter), particularly capacitors can cause it to get worse, but if you get it with multiple vcrs and TVs it could be something else.

Quote:

My friend has a consumer VCR and it doesn't do this.
Is that with the same TVs? Modern flat-screen TVs often have noise reduction enabled by default on the analog inputs which could reduce it a bit.

xgamerd600 12-01-2020 10:03 PM

It was an older flatscreen tv and it doesn't do it on anything else hooked up to my old CRT tv. How can I check if the capacitors are going bad?

-- merged --

I meant that I used to have a flatscreen tv and it did this, my friend had a CRT. I also cleaned the heads and it is still there also on my Nintendo 64 and PlayStation noise shows up on a black screen and is barely visible on everything else so it must be some sort of interference. Tried using various cables too.


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