[Coco] video composite on korean coco 26-3134A

[Zippster]

The crystal on the motherboard should tell you wether it’s PAL or NTSC.
It’s divided by 4 for the subcarrier frequency.

14.31818mhz = NTSC, PAL should be 17.73448mhz

- Ed



On Oct 4, 2014, at 8:05 AM, Bruce W. Calkins <brucewcalkins at charter.net> wrote:

> If it is a 50 Hz power supply the TV output is probably useing the European PAL standard.
> 
> Bruce W.
> 
> ==================
> 
> 
> 
> ----- Original Message ----- 
> From: "didier derny"
> 
> I tried, I was not expecting a correct image, but at least something like a
> synchro
> But nothing, just snow...
> 
> The tv see a "VCR" but no signal
> 
> Any idea if the modulator or the coco uses the 60hz ?
> The power supply is 110v but 50Hz
> 
> That's why I have a serious doubt about this machine...
> 
> --
> didier
> 
> -----Message d'origine-----
> De : Coco [mailto:coco-bounces at maltedmedia.com] De la part de Zippster
> Envoyé : samedi 4 octobre 2014 00:17
> À : CoCoList for Color Computer Enthusiasts
> Objet : Re: [Coco] video composite on korean coco 26-3134A
> 
> You could rig up a quick and dirty piece of coax cable from the RF port to
> the antenna in jack on a tv and tune it to channel 3 or 4 (whatever the
> switch is on).  The picture may not even be that bad.
> 
> Or the relay.
> 
> 
> -Ed
> 
> 
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