Sound problems on SNES

[VanFinale]

Okay so I hooked up my old SNES after about a year of no use and I noticed that it does not put out sound on the right side. It isn't the TV or the games, I have another SNES hooked up with same cables and I used the same games and it works perfectly. So yeah whenever I would for instance be on the right side of the screen on Zelda all the sounds are all muffled. Anyone know what could cause this or even better how I could fix it?

[Hobie-wan]

Dirty connection on the plug on the system or the cable most likely. Probably got some moisture that corroded a bit. That connector doesn't make it easy to clean it, but you could try this. Unplug everything, douse the AV plug with rubbing alcohol, then plug/unplug it for a few seconds until the alcohol is mostly evaporated. Unplug it again and put them aside to dry for at least an hour or two. If that doesn't help, it's possible that the cord was jerked and there's a break inside the wire, or there could be a bad connection inside the system. Try a different cord. The AV cables for the SNES, N64, and GC are the same, so surely you have or can borrow another to test.

[VanFinale]

I'm not using an AV cable I'm using the old coaxial cable, also I know it isn't the cable cause I hooked the other SNES up with the same cables.

[Hobie-wan]

Coaxial (RF) hookup is only mono. So if one side is muffled, then there's something going on inside before the RF signal is made and shot out of the system. If this is an older SNES that doesn't have the warning blurb next to the power button, then the sound board inside is a separate module. Opening up the system and cleaning the contacts there might help. Though you'd need a security bit to open it up.

[VanFinale]

Coaxial (RF) hookup is only mono. So if one side is muffled, then there's something going on inside before the RF signal is made and shot out of the system. If this is an older SNES that doesn't have the warning blurb next to the power button, then the sound board inside is a separate module. Opening up the system and cleaning the contacts there might help. Though you'd need a security bit to open it up.

So open it up and give it a clean? Sounds easy enough that was the problem before when the console wouldn't work at all. Can you just tell me what specifically I'm cleaning not sure what the sound board would look like.

[Hobie-wan]

If it is an older SNES that doesn't have the warning text next to the power switch, then there's a module in the back right that handles sound. Maybe unplugging that and cleaning the connections there.

[Ziggy]

I think it would also be worth thoroughly cleaning the console's cart connector. mmmonkey says that a dirty/worn connector can cause missing sound.

Let me ask you this, did you leave carts in this SNES for extended periods of time? Since you have another SNES that works fine, can you compare the two of them. Does a cart seem to go in and come out with less resistance than on the other console?

But anyway, definitely clean the connector and clean the carts while you're at it (you don't want a dirty cart to dirty up a clean connector).

[VanFinale]

I think it would also be worth thoroughly cleaning the console's cart connector. mmmonkey says that a dirty/worn connector can cause missing sound.

Let me ask you this, did you leave carts in this SNES for extended periods of time? Since you have another SNES that works fine, can you compare the two of them. Does a cart seem to go in and come out with less resistance than on the other console?

But anyway, definitely clean the connector and clean the carts while you're at it (you don't want a dirty cart to dirty up a clean connector).

They both seem exactly the same in terms of resistance actually their pretty much identical in every way except for the missing sound. I don't have access to the SNES right now since I gave it to my cousin since I have 2. So I have to go over there tomorrow to go try and fix it. I'll post back in the thread afterward hopefully it will be fixed.

[CRTGAMER]

I had a problem with my 5200 auto switchbox acting up. Turns out from, plugging in the cable too hard the connector became loose internally. Simple solder fix on that difficult to find box. Maybe your SNES is of similar situation on the composite jack?

SNES owners correct me if I'm wrong on this:
Now in your situation since the Co-Axial is a mono signal, I don't see how the TV could only have sound on one side. Even if the internals of the right hand sound drivers are bad, the TV doesn't know. Mono RF cable with any sound fed should go to both of your stereo TV speakers.

EDIT
Re-read your post:

Okay so I hooked up my old SNES after about a year of no use and I noticed that it does not put out sound on the right side. It isn't the TV or the games, I have another SNES hooked up with same cables and I used the same games and it works perfectly. So yeah whenever I would for instance be on the right side of the screen on Zelda all the sounds are all muffled. Anyone know what could cause this or even better how I could fix it?

So does the bold type mean sometimes right side speakers work fine depending on where you move Link in the game?

As Ziggy pointed out maybe the dirty contacts on the cart connectors?