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-   -   VCR PSU effect on image quality? (https://www.digitalfaq.com/forum/vcr-repair/9943-vcr-psu-effect.html)

HBB360 08-11-2019 03:21 PM

VCR PSU effect on image quality?
 
Hey everyone!

Haven't posted on here for a while but I can't seem to formulate my question in such a way for Google to give me an answer so I'm turning directly to you guys. I feel like this thread is kind of spammy as it's probably gonna be short and not generate much discussion but here I go anyway.

In late 90's, early noughties VCRs (I'm looking at the JVC HR-S9700EU in particular) does the fact that the Power Supply is on the same board as all the other circuitry rather than being on a separate power board affect the image quality in a noticeable way? I remember hearing that when it's on the same board the AC line generates more interference compared to a VCR where the high voltage part is in a metal shield on a separate board.

I'm attaching a pretty low-res screenshot of the internals of that VCR to illustrate what I mean, notice the PSU on the right on the same board and with no shielding (on a side note it seems like a bit of a shock hazard :huh2: ).

Thanks for reading and again sorry for the sort of needless thread, I'm sure that with a bit more digging I'd be able to find the answer but it's getting late and I'm pretty tired.

lordsmurf 08-12-2019 05:31 PM

Screenshot didn't attach.
Try again: http://www.digitalfaq.com/forum/news...ly-upload.html

But yes, some models of decks are infamous for noise leeching into the unit. You also see a lot of that with units that have fans, must be modified in some cases. Electrical interference noise is a problem in general for video.


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