PAL turbografx NTSC mod

[schweaty]

Your skills have improved. Much less flan on the traces.

I licked it off.  It was delicious

[EvilEvoIX]

Cool thread.  I was wondering when they were gong to tackle these NOS units.

[Chrom_]

and clip pin7 on the cxa1145 and tie it to 5V

Hi all, excuse me for reviving an old thread, but I'll perform this mod in the next few days and the last point of thesteve's post is not entirely clear to me and the links to the pics are broken.

Pin8 of cxa1145 is NTSC/PAL input according to online schematics. Should the pin be lifted and linked to +5V on the lifted chip's leg, and not to the PCB, correct?

Thanks a lot

[mickcris]

yes, that is correct

there are a couple other pics on the first page that are not broken (mine included) but i think there are some wires blocking a clear view of that pin.

[Dreamstate]

So, on a scale of 1-10 with 10 being forget it, how hard is this?  There are a lot of PAL units new out there, so it is tempting.

[mickcris]

So, on a scale of 1-10 with 10 being forget it, how hard is this?  There are a lot of PAL units new out there, so it is tempting.

its pretty easy.  not sure how to rate it on that scale though as it would be different for everyone.  the hardest part is removing the PCZ80.  If you have the proper tools though it is not hard.

[Dreamstate]

Ok, it is tempting.  Thank for the feedback.

[Fidde_se]

[grips03]

How well does this mod work?  Any issues?

[thesteve]

it works quite well
the pal unit is less noisy then the ntsc one

[thesteve]

the missing images from my original post

[Alfiesgames]

 Hello from the future. Does anyone have the pics for this still? My goal is to rgb mod my pal unit and getting running at 60hz. I'm not concerned about composite out.