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PostPosted: Thu Apr 18, 2019 6:42 am 
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Joined: Fri Mar 23, 2018 8:58 pm
Posts: 23
Hello guys!

Recently I got a famiclone named Subor D21. It is PAL 50Hz so the game is slow and not fullscreen. So I want to mod it to NTSC 60Hz.

Attachment:
subor-d21-top.png
subor-d21-top.png [ 732.05 KiB | Viewed 2657 times ]

Attachment:
subor-d21-bottom.png
subor-d21-bottom.png [ 706.38 KiB | Viewed 2657 times ]

Here is the mainboard of the famiclone. As you can see, it is an NOAC with a 26.601712MHz crystal. Silkscreen on the chip "UM6562F".
I searched the whole forum and found nothing about the chip. Is it similar with UM6561?
Anybody got any ideas on how to mod it?

I searched Youtube and found a video. From about 8:15 the guy on the video disassembled his console. The mainboard is exactly the same with mine! However I don't understand Russian a single bit so I don't know what he was saying. But according to the mess wiring on the video, I guess he might successfully modded it to NTSC 60Hz. Could anybody who knows Russian please tell me briefly what should I do to mod it?


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PostPosted: Tue Apr 23, 2019 4:07 am 
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Joined: Fri Mar 23, 2018 8:58 pm
Posts: 23
Tried and success! I'll share with you guys in case someone in need someday.

Similar with UM6561 as I assumed.
Connect the two jumpers as shown in the image. (the two red lines)
Change the 26.601712 MHz crystal to 21.47727 MHz.
Finished and enjoy!

Attachment:
subor-d21-bottom.png
subor-d21-bottom.png [ 923.53 KiB | Viewed 2406 times ]


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