Can't get RGB sync out of this board...

[Tommytamsworth]

Hello friends. I recently got a taito f3 multi.

Ive had a f3 mobo and some carts for a little while now, and unfortunately my issues are the same as back then. I can not get a full signal out of this board, best I can do is one or two colors.

I will attach some photos and explain my setup:

Axunworks power supply giving 5.07v

HAS 5.0 Supergun

8pin mini din to SCART cable

Which is going into my recently purchased RGB-2YC converter I brought from Axunworks

Trying to output s-video to my crt. I only have composite/s-video/component. Don't have the means to RGB mod atm. And my goal is for this setup to work with Y/C signals anyway for ease of setup elsewhere.

(I have some other connections in the converter image but I am not using those. Only the SCART cable is being used as an input)


Ive tried this on my small pvm and this consumer set I recently found, neither is giving me any luck.

Does anyone have any advice? I have an rgb2comp coming in soon to see if that would work...

 

[Tommytamsworth]

Other notes, ive messed with video settings on the HAS to enable/disable raw cysnc and that doesn't affect the image much

Also tried:

RGB Lab's y/c HD-15 to NTSC Composite Video/S-Video adapter (Needed to do some workaround to get 8-pin to vga, got a separate converter for that) same issue, either no sync or a black and white image.

Scart to BNC into the BNC input on the rgb-2yc converter in the first image, that is what I tested after the direct 8-pin mini din to scart did not work. This one I couldn't get to sync at all...wavy image no matter what I did on the HAS or the converter.

 

[Big_P Big_p]

F3 has a strange sync pulse known to be a problem for some setups. Try martin jones sync assist? (Cant remember its name but that should get you there as a search term) or something similar.

 

[Tommytamsworth]

Update on the RGB2COMP...it came in. Hooked it up, sorry I didn't take a picture...

Good news? Full RGB colors. Bad news? No Sync still...I tried messing around with my crt's service menu moving the horizontal and vertical image placement as I read that might cause some issues. No dice.

Does anyone else here own a HAS and has used it with the Taito F3 Before? Would appreciate some advice if you had to do any finagling to get it to work.

According to RGB's site "Taito F3 won't work via Scart" in reference to it not syncing to the OSSC. Don't have an OSSC, and if it doesn't work via Scart im going to have to find some other way to output a signal from the HAS, I only really have that connection from 8 pin mini din atm

Really hope I don't need a new supergun...

 

[RGB]

Do you have another PCB to test? The F3 works in all my setups, including the HD-15 to Composite Video/S-Video Adapter connected to a PAL CRT.

 

[Tommytamsworth]

Do you have another PCB to test? The F3 works in all my setups, including the HD-15 to Composite Video/S-Video Adapter connected to a PAL CRT.

Thanks for stopping by. I got a multicart setup and another mobo with other carts, I'll try that though that wasn't working either before

Ive seen both work on a Jamma cab so I'm pretty sure both motherboards are fine

 

[RGB]

Other notes, ive messed with video settings on the HAS to enable/disable raw cysnc and that doesn't affect the image much

Have you tried the CSync set to TTL level? If you got my adapter, it requires TTL level. The TTL level will be safe for other equipment, too, with 75R termination the receiving device will only see 0.6-0.7Vp-p.

 

[ImportantBet]

I had similar issues like your green screen picture when hooking up a Guwange PCB via RGB-YPbPr transcoder to a consumer set. I kinda ruled out that my TV was incompatible with the PCB.