MV1FS Video Weirdness

Howdy folks...

I have a MV1FS MVS board hooked to my home built supergun.

The board itself seems to work well, but there's one issue....theres a wavyness about the picture...specifically when theres text on the screen....

The best example of this I've come up with is on the "Parental Advisoly" warning screen on Metal Slug X. Theres a wavyness through everything thats red on the screen...but its not just limited to there....pretty much any screen that's stationary and has text on it has this problem...During gameplay, its fine...though the wavyness happens on the stationary Metal Slug X logo on top of the screen in Demo mode.

It does it on my other MVS game, World Heroes 2.

It doesn't happen on my Tekken 2 Board.

I'm using a JROK encoder 3.1 and I'm hooking it up through composite---I've heard using composite can give a shitty picture...but it works just fine with Tekken, so I dunno. I've tried adjusting the RGB pots on the JROK as well, but that doesn't help.

Any ideas? Thanks!

Edit: Forgot to mention, though it wouldn't really make a difference, I have cleaned the game.

Yeah, yeah, I know this thread is about a million years old, but I'm gonna bump it anyway. It's my own thread...so I'm allowed, right.

Any thoughts on this?

Now that I have more MVS carts...I can say that it looks to happen where things are really intensely red or blue...but its much more pronounced on red.

I now have more Jamma games, and I've tried a few out again. Nothing on Tekken, nothing on SFA2, nothing on MK3.

Only on MVS, all games. It gets really noticeable on World Heroes 2...but thats just due to its colors.

Does this JROK board just not like my MVS, or what?

Have you tried svideo/component to compare. I always have wavy distortion to a degree with composite video with my mvs.

Blur2040 said:

Yeah, yeah, I know this thread is about a million years old, but I'm gonna bump it anyway. It's my own thread...so I'm allowed, right.

Any thoughts on this?

Now that I have more MVS carts...I can say that it looks to happen where things are really intensely red or blue...but its much more pronounced on red.

I now have more Jamma games, and I've tried a few out again. Nothing on Tekken, nothing on SFA2, nothing on MK3.

Only on MVS, all games. It gets really noticeable on World Heroes 2...but thats just due to its colors.

Does this JROK board just not like my MVS, or what?

Click to expand...

From using many JROKs I can tell you that the waviness from composite is from the JROK itself. JROKs composite is worse than the AES composite from the Sony encoder. The s-video is nice though. If you want better composite video get a Neobitz.

Xian Xi said:

From using many JROKs I can tell you that the waviness from composite is from the JROK itself. JROKs composite is worse than the AES composite from the Sony encoder. The s-video is nice though. If you want better composite video get a Neobitz.

Click to expand...

Alright. Glad to finally have an answer on that. I bought the JROK as I heard that it was more compatible with Jamma boards in general.

It does kinda suck with MVS on composite though. Even worse, when I built my supergun, I got lazy and failed to put on a jack that passes S-video to the outside of the box. So, maybe I'll have to get around to that (after giving S-video a test to see whether it's worth it at all---every other boardlooks fine in composite).

Blur2040 said:

Alright. Glad to finally have an answer on that. I bought the JROK as I heard that it was more compatible with Jamma boards in general.

It does kinda suck with MVS on composite though. Even worse, when I built my supergun, I got lazy and failed to put on a jack that passes S-video to the outside of the box. So, maybe I'll have to get around to that (after giving S-video a test to see whether it's worth it at all---every other boardlooks fine in composite).

Click to expand...

Definitely give s-video a try.... wire that up!

Because i still can't create threads (I assume i need at least 10 posts?), i will ask here. Sorry to the OP.

A friend of mine owns a MV-1F. Recently he had the 'great' idea to put that stereo/mono-switch to stereo. He uses the board on a supergun, so the stereo-harness is of course not connected.

Long story short, sometimes when you start the board now, there are missing sound-samples on all games. Thats not the case everytime, it does work fine usualy after the 2nd or 3rd power up. And sometimes the sound craps out alltogether when the board is running... its just weird.

Well, i assume he has damaged the audio amplifier. Can someone confirm this? And what can he do to repair it?

Thank you guys.

Gairas Brother said:

Because i still can't create threads (I assume i need at least 10 posts?), i will ask here. Sorry to the OP.

A friend of mine owns a MV-1F. Recently he had the 'great' idea to put that stereo/mono-switch to stereo. He uses the board on a supergun, so the stereo-harness is of course not connected.

Long story short, sometimes when you start the board now, there are missing sound-samples on all games. Thats not the case everytime, it does work fine usualy after the 2nd or 3rd power up. And sometimes the sound craps out alltogether when the board is running... its just weird.

Well, i assume he has damaged the audio amplifier. Can someone confirm this? And what can he do to repair it?

Thank you guys.

Click to expand...

This might help.