Author Topic: Help with Svideo Adapter PAL --> convert to NTSC = Black and White pictures  (Read 1175 times)

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Offline talrek

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Hi,
i just adapted a Svideo adapter "Pal" to "Ntsc"
I put pin 1 "only" to 5v and i changed the crystal.

Now image is black and white on my TV. The specs says that the TV/Monitor is NTSC.... i doubt... the model is Philips 231T1
I use Svideo via SCART.

Any ideas if it is normal or not ? and if i can test it. I don't want to ship items i'm not sure it works or not.

thanks !!!! ;) ;) ;)

Offline Bryce

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If it's an AD724 based adapter, then that's all you need to do. Maybe the TV isn't as NTSC as they thought. :) Do you have access to another TV to test it?

Bryce.

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Offline talrek

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I have another TV. I'll try to test on it.

In fact, after replacing the crystal,  I have connected pin1 to 5v Only :
1 - I've cut the trace between pin 1 and 2
2 - I've cut from pin 1 to the 100nF capacitor.
3 - Then I've connected the same 100nF capacitor to pin 2 (so the capacitor is connected to the GND)
4 - And finally i've connected pin 1 to 5V.

Is it right ? or am i wrong ?

Offline ZbyniuR

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NTSC from USA is different than NTSC from Japan.
My TV can display in color PAL, SECAM and one of NTSC (I don't know which one). Anyway I had to modify my PSX, to NTSC games was look colorful by composite. :)
Maybe your problem is similar.

« Last Edit: 23:38, 16 March 15 by ZbyniuR »
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