Super Famicom - Singapore Version-

I've been living in Singapore for the past 5 years, and I recently found a boxed Super Famicom in a suburb toyshop. The old man has been keeping it in his store room since the 90s.

It's basically a normal Japanese Super Famicom (same box, same packaging) , but I came across something weird trying it, and I'm seeking an expert's advice.

I tried several games (all NTSC JAP) weeks ago, and I'm afraid i'm getting black bars and slowness : 50hz output. This is a super famicom which is supposed to be 60hz.

Last time in Singapore, TVs were all PALs. There is no proper "Nintendo Singapore" retailing & localizing products here. Only independent importers.
I thought about it : maybe they were importing japanese Super Famicoms and modding them to fit with Singapore TV signals?
In Europe, i can see people modding their PAL SNES to get a 60hz signal. It's probably possible to "downgrade" a 60hz japanese super famicom from 60hz to 50hz.

It's now 2013 and all my TVs & monitors are ok with NTSC (60hz), and i'd like to bring back a 60hz signal out of my Super Famicom.
I am using the multi out both composite & RGB. My monitor is a Sony KX-14CP1.

I managed to open it. It is obviously a SHVC-CPU-01. On the top of the SHVC-Sound card, we can see a board with a cable..
It looks like this board is the cause of the 50hz signal. (from Biwave Inc, Taiwan).

I just took it out, cut the additional wires and now I have no signal at all. #oops#


Anyone know what's going on here?

 

looks like a weird mod

I see the Red green blue sync and composite and auto left and right with ground wire

but whats that other board on it

 

It has a sony cxa1145 video encoder in it so they run rgb up to it, that board has the pal circuit for the video encoder and then outputs that for video.

You could remove that board and restore all traces or mod that board out for 60hz (as well as restore the ppu chips back to 60hz).

 

In your first picture, the chip labeled BA6592F. Are any of the legs or traces going to that chip cut or broken? If so these will need to be fixed.
In picture 7 , is that leg beside the number 5 cut? If so fix that too and any other legs on that connecter if they have been cut or removed.
The last picture is a video encoder board, probably has some sort of video amp to take RGB from the main board to a new video encoder the sony chip, and converted for PAL output.
Did you desolder all the wires or just clip them so you could at least reconnect them if needed?

 

Hei guys, I have the same problem. Did you get the solution?