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

[Zippster]

Ah, ok.  He could look for that chip then to verify it’s PAL.

-Ed


On Oct 4, 2014, at 11:24 AM, Luis Antoniosi (CoCoDemus) <retrocanada76 at gmail.com> wrote:

> the PAL machines have an extra chip on it connected to the 6847 as this one
> cannot generate 50 Hz PAL video.
> 
> Luis Felipe Antoniosi
> 
> 
> 
> On Sat, Oct 4, 2014 at 9:50 AM, Zippster <zippster278 at gmail.com> wrote:
> 
>> 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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>> 
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