Re: OT: VCR picture flashing

["yhkeppy" <keith@xxxxxxx>]

Keith (you're right, it is strange!)

By recorded, i mean ones i have recorded to watch no pre-rec as I
have virtually none of these after moving to the little silver disks!

It does manifest itself a bit like macrovision (have seen this in
action out of interest), but the next problem is that the screen i
mentioned is a plasma. So I could probably rig the VCR up to go
straight to the plasma, (and will try when i find/make the
appropriate cabling) but i guess i'm interested if anyone else has
seen this.

Interestingly, this is the second VCR that did this (last one was
stolen) and this Denon amp is not the common factor as the previous
amp was a Sony (also stolen!), so therefore the only common
components are the NTL digibox (not stolen) and the plasma (also
stolen), but in both cases i was using composite (i know, will be
cabling up properly when i decorate) therefore the screen(s) is(are)
probably discounted.

Cheers,

Keith

--- In ukha_d@xxxxxxx, "Keith Doxey" <ukha@d...> wrote:
> Hi Keith, ( always seems like I am talking to myself when I type
that!)
>
> You say when playing "Recorded Videos", by that I assume you
mean
> "PRE-Recorded" videos as opposed to videos that you yourself
have
recorded.
>
> Many Pre-Recorded videos have MacroVision applied which is designed
to
> prevent copying of the tapes. Basically Macrovision inserts extra
sync
> pulses and adds distortion to other sync pulses with the express
aim of
> messing up the Syncronisation and Colour decoding circuitry in a
VCR trying
> to copy the tape.
>
> It manifests itself as variations in brightness and colour which
make the
> recorded video unwatchable. Unfortunately, a Macrovision encoded
signal does
> not strictly conform to the specification of a video signal and
whilst most
> modern TV's are not troubled by it, some older sets cannot display a
> macrovision signal without picture disturbance.
>
> If you are talking excusively about Pre-Recorded tapes such as
Disney etc,
> then there is a strong possibility that the problems are down to
MacroVision
> affecting either the video processing circuitry in the Denon Amp (
does it
> have OnScreen display? ) or the TV itself.
>
> What happens if the VCR is connected directly to the TV ?
>
> Are all YOUR recordings unaffected ?
>
> If it ONLY happens on the VCR and it is OK direct to the TV then if
you have
> 2 SCARTS I would suggest feeding the VCR to the TV on the second
SCART with
> only its audio going to the amp.
>
> The amp could then feed all the other sources into the TV on SCART1
>
> Wait to hear more....
>
> Keith
>
> www.diyha.co.uk
> www.kat5.tv
>
>
> > -----Original Message-----
> > From: yhkeppy [mailto:keith@xxxxxxx...]
> > Sent: 27 April 2003 18:35
> > To: ukha_d@xxxxxxx
> > Subject: [ukha_d] OT: VCR picture flashing
> >
> >
> > Hi,
> >
> > I've had a problem with 2 VCRs, and need some help diagnosing the
> > fault. Basically, when playing recorded videos on my Panasonic
VCR
> > deck, the picture periodically flashes to black, the picture
returns
> > briefly in black and white, flashes again to black, then returns
to
> > colour. This cycle continues roughly every 60 seconds. Very
annoying!
> >
> > The VCR is connected into the back on my Denon 2801 AV amp which
> > outputs to the screen. The TV signal input is an NTL box into the
> > same amp. I don't get this problem on any other video source at
all.
> >
> > Help me please!
> >
> > TIA,
> >
> > Keith
> >
> >
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