Famicom World

Family Computer => Technical & Repair Assistance => Topic started by: ulera on November 18, 2012, 11:39:41 am

Title: sync strike issues (RGB cables)
Post by: ulera on November 18, 2012, 11:39:41 am
As of yesterday I have three RGB capable consoles, a SFC, a model 1 Genesis and a PS2 which I hook up to my hdtv using a snyc strike and gbs-8200.

Problem is, when I use my Super Famicom it works beautifully and I get a very nice and clear picture, but when I use my PS2 or Genesis on the exact same setup... all I hear is distorted audio. 98% of the time the GBS will display "No signal" but 2% it will display the correct picture except scrambled. Are the cables I ordered just bad or is it an issue with my snyc strike?
Title: Re: sync strike issues (RGB cables)
Post by: Pit on November 18, 2012, 11:59:42 am
How do you power the sync strike ? Did you try to push "auto" button on the gbs ? (push for 5 secondes then release)
Title: Re: sync strike issues (RGB cables)
Post by: ulera on November 18, 2012, 12:15:03 pm
I use it using the power from scart cable option. I did, and it still didn't work. It isn't the GBS though because that works fine with both my Video Game Jockey and my Sync Strike +SFC, so the problem is either two bad cables or a sync strike issue.
Title: Re: sync strike issues (RGB cables)
Post by: Pit on November 18, 2012, 12:26:06 pm
You can try to power the sync strike using external 5v option. A simple way to do that is to use the power cable delivered with the gbs, if gbs is already powered with a 5v psu.

I have just tried my megadrive with my sync strike/gbs setup and sync strike powered with 5v scart option, it didn't work.
Title: Re: sync strike issues (RGB cables)
Post by: ulera on November 18, 2012, 01:38:00 pm
Is there anywhere on the board I can tap to get 5V? I'm using an AC adapter for input so I can't use the same source.
Title: Re: sync strike issues (RGB cables)
Post by: Pit on November 18, 2012, 02:49:29 pm
On the gbs, just near of the jack where you plug the ac adapter, there is a two pins white socket where you can take 5v and ground signals, and wire it to the sync strike.
Title: Re: sync strike issues (RGB cables)
Post by: ulera on November 18, 2012, 03:22:17 pm
That's an input not an output :(

Why is it it would work for my SFC and not the other two anyway? They're all 5V
Title: Re: sync strike issues (RGB cables)
Post by: Pit on November 18, 2012, 10:35:54 pm
If you are using a 5v ac adapter for the gbs, you can use the socket near as a 5v output for the sync strike. That's the way I do and it works perfectly.

(http://img2.uplood.fr/free/a2zt_dsc04596.jpg)(http://img2.uplood.fr/free/npa3_dsc04597.jpg)

(http://img2.uplood.fr/free/tyql_dsc04598.jpg)(http://img2.uplood.fr/free/8ymb_dsc04599.jpg)

(http://img2.uplood.fr/free/m8ny_dsc04606.jpg)(http://img2.uplood.fr/free/wqf6_dsc04621.jpg)

Anyway, I don't know why it doesn't work via the scart socket, a lot of my consoles have 5v on scart, only my super nintendo works this way.
Title: Re: sync strike issues (RGB cables)
Post by: ulera on November 19, 2012, 12:46:52 pm
I tried it your way. It worked far batter, but I did have a vertical distortion and the sound still sounded very distorted. I'm guessing it's just a bad connection. Maybe I need to strip the wires so they go in further?
Title: Re: sync strike issues (RGB cables)
Post by: Pit on November 19, 2012, 01:15:06 pm
You can try that, Yes. Also, I often have to change settings of the gbs to obtain a good picture on screen, you can try it if you haven't yet.

I don't think it's a syncstrike issue as it works great with your sfc.
Title: Re: sync strike issues (RGB cables)
Post by: ulera on November 19, 2012, 02:20:19 pm
How tight should the power source wires be? They just come right out and i've tightened the screws as tight as they'll go.
Title: Re: sync strike issues (RGB cables)
Post by: Pit on November 20, 2012, 03:56:22 am
Tighten the screws until wires stay in place, that's enough.
Title: Re: sync strike issues (RGB cables)
Post by: ulera on November 20, 2012, 05:49:27 am
Did. Apparently it's an issue with the genesis itself and goodwill lied to me about it testing out good.
Title: Re: sync strike issues (RGB cables)
Post by: Rosser on November 20, 2012, 03:16:18 pm
It can be a number of thing some of the geny motherboards are crap Here's a link that describes in detail  http://www.sega-16.com/forum/showthread.php?7796-GUIDE-Telling-apart-good-Genesis-1s-and-Genesis-2s-from-bad-ones

I had issues with audio sounds in my scart cables I just ended up separating the audio cables from the scart male plug to rca to 3.5 cable and added a headphone jack to the back of my saturn but you may just want to pickup a better set of scart cables that has better grounding

EDIT I forgot your using a sync strike so above mod may need to be adjusted

Also I'm pretty sure the Geny does not need to have sync cleaned I know the sync strike is meant to work with all systems but it may have an issue of some sort if you happen to have a male scart plug you could get your hands on you can wire it up to the left side of the gbs its what I did for my saturn its only like 4 wires

So that may be your issue I believe both PS1/2 and SNES need their Sync cleaned while all Sega stuff has its own sync on composite so its good to go with without the sync strike

Another thing here is a link to some guys who are pure geniuses with all this stuff I guarantee they can help you out with any issues you have    http://shmups.system11.org/viewforum.php?f=6



Post Merge: November 20, 2012, 03:46:10 pm

Quote from: Pit on November 18, 2012, 10:35:54 pm
If you are using a 5v ac adapter for the gbs, you can use the socket near as a 5v output for the sync strike. That's the way I do and it works perfectly.

(http://img2.uplood.fr/free/a2zt_dsc04596.jpg)(http://img2.uplood.fr/free/npa3_dsc04597.jpg)



Arcade Forge really need to start putting male VGA ends on their boards all those male to male gender changers are ridiculous I know its not your fault it just bothers me the SLG me and this guy over on SRK forms developed ...well mostly him but I had input  ;) we used male VGA on one side and female VGA on the other much easier setup 
Title: Re: sync strike issues (RGB cables)
Post by: ulera on November 20, 2012, 05:51:30 pm
I tried listening to the audio using headphones in the port on the front and I got the same audio distortion and the rf port didn't work at all. I just think the genesis I bought is a piece of crap.
Title: Re: sync strike issues (RGB cables)
Post by: Rosser on November 21, 2012, 12:49:00 am
Quote from: ulera on November 20, 2012, 05:51:30 pm
I tried listening to the audio using headphones in the port on the front and I got the same audio distortion and the rf port didn't work at all. I just think the genesis I bought is a piece of crap.


Did you look at the first link in my post it should tell you what revision you have but you're right there Some Geny's with horrible sound usually you can pick up a replacement on the cheap but look at that link so you make sure you get a decent one next time
Title: Re: sync strike issues (RGB cables)
Post by: Lum on November 22, 2012, 02:52:38 am
NTSC SNES has a raw sync pin. PAL SNES does not.

Same situation as the Saturn and Gamecube.