Y Does this Sound Like A Fluttering Or F@rting Ibanez WD7

If you are getting a buzzing sound, the ground connection is wrong. If you google how to wire an electric guitar there is a lot of info on it.

Generally ibanez serial numbers will start with a letter, rather than just numbers. Please double check to be sure.
After that, consult this web site-
Ibanez Collectors World HOW TO READ IBANEZ SERIAL NUMBER

It sounds like the guitar pickup may be faulty. It may be a loose connection on the which could be soldered easily or it may be damaged in some other way.

As this is isolated with your G string, I suspect the individual pickup unit is at fault.

try opening it up and pinching the two prongs around the patch cord to tighten it up. My bass was cutting out for a while and giving out no sound till i did that

your gonna prob have to replace knob but try and re sodder the connections. if that doesn't fix it then its your knob that needs to be replaced

If the sound you when plugging in the headphones is coming from the main speaker, it is just the interupt contacts on the headphones are making or breaking contacts. This can be a good sign if there is volume to it.

Make sure the plugs you are using are the right length for jacks in the Ibanez as there are 5 lengths in use.. If this just developed, the length issue is not a concern. If the jacks are loose, snug them down, it may be a faulty ground relying on the chassis contact with the jack.. It may be a broken wire. It can also be a dirty switch contact or dirty level control, especially the standby switch. make sure they are clean with some contact cleaner. Make sure your level is turned up too,

If you have effects, or a preamp on the guitar, make sure they have fresh batteries or good power connections and are not on mute.

Many try to use poor quality guitar cables and have the problem. The sleeve of the guitar cable plug turns on the battery in the guitar. Always loop the guitar cable through your belt or the guitar strap to avoid the cable wisting the plug in the guitar causing noise and WEAR that wears the plug sleeve to the point it no longer will activate the guitar.

Sounds like you'll need a new pot. If you are good with a soldering iron, it's not difficult to replace. If not find a local tech to do it for you.

Sounds like a problem with the optical sensor. Your best bet would be to try to get a replacement from Ibanez or take it to a repairman. They are a resistor just like a pot but work by having an LED on one side and an optical "eye" on the other reading the amount of light passed thru transparent film. Morley has replacements for their wahs....not sure if its the same resistance. An audio repairman should hook you up.