Very low sound on cmvs

[Warpedflash]

I have got a consolized mv1f that has the audio pulled from from the underside of the headphone connector (See pics crappy quality phone :S).

I have both the headphone slider and speaker sliders all the way up and still get very low sound from the board. Is there somewhere else I can tap into the sound to get it at a higher level?

The cmvs is connected to my TV by scart off a 9 pin din.

http://dl.dropbox.com/u/638615/IMG_20110212_192046.jpg
http://dl.dropbox.com/u/638615/IMG_20110212_192120.jpg
http://dl.dropbox.com/u/638615/IMG_20110212_192138.jpg

Cheers

 

[Xian Xi]

That would be the loudest unless you are running +12v and tap it from the edge. Usually from the headphone connector it's pretty loud. Maybe something is going bad in your audio section.

 

[Warpedflash]

That would be the loudest unless you are running +12v and tap it from the edge. Usually from the headphone connector it's pretty loud. Maybe something is going bad in your audio section.

I thought it was :S I went and checked your tutorial and it looked like you tapped from the same points.

Where could I check for other faults?
It looks like whoever did this originally based it off your tutorial as well it uses similar points to your tutorial (inc the 5v point)

 

[Xian Xi]

Are you using it on an LCD TV by chance? I know some brands have very low volume which is why I would suggest using the stereo for sound.

 

[Hewitson]

Sounds like your board needs a recap. The headphone connector should be absolutely ideal for inputting to a TV.

 

[Warpedflash]

Are you using it on an LCD TV by chance? I know some brands have very low volume which is why I would suggest using the stereo for sound.

Yea I am but I have a 2 slot cmvs that works fine I also have another 1 slot that I can run off a supergun and its fine.

Sounds like your board needs a recap. The headphone connector should be absolutely ideal for inputting to a TV.

There a list anywhere of what caps I would need to replace?

 

[Hewitson]

channelmaniac (and maybe MKL) can probably provide you with one.

 

[malignantpoodle]

The cap values should be listed on the board (and the caps themselves). You can look here for highlights of the audio section of various boards;
http://www.arcadecomponents.com/f/Neo_Geo_Cap_Kits.pdf

If you acquire the caps on your own make sure to match uf identically, voltage rating needs to be the same or higher.