Very littel sound in white and black keys. normal

Try to find a replacement. If not have a service center with a schematic make a new one.

Sounds like you have the accompaniment function selected. Find the button on the front panel and deselect it and you will get full control back

Resetting Instructions:
1) Try a partial reset by holding down the last white key while turning the unit ON.
2) If you haven't recorded any performance(s), for a full reset, hold down on the last white key AND THE lst three black keys while turning the unit ON.

Assuming you've tried rebooting the white screen one? If so, You need to take both to a qualified repair man and get the job done right. If you start swapping parts without knowing what works and what doesn't, you risk screwing up the good parts,

First thing is to verify your sound system is OK by running program material such as a CD at normal levels through it. If it is OK then you need to consider if your drum set is overdriving your sound system. Drums generate high pulses and can easily saturate PA systems. First thing here is to connect headphones to your drum set and listen how the set sounds via headphones. If both these tests pass muster, then your PA system may be too small to handle the drum audio. In that case, get at least a 15 inch powered monitor, preferably bi-amped to run the drums through.

If this is a brand new unit, exercise your warranty!

BUT FIRST see if packing material worked through the speaker grill... you know littel pieces of the packing peanuts or otherr contamination that sits in the speaker cone and rattles.

The Fender pick up has two wires, blue and white. The Jackson has four: red, green ,black, and white.

1st. Determine the hot wire and the ground wire on the Jackson pick up and then just replace the Jackson pup with the Fender pup. White on the Fender is the hot lead and blue is for the ground. If you hook it up backwards it will be out of phase with the other pup's and will sound thin and weak when selected with either the rhythm pup or the lead pup. Of course, by itself it will sound normal because switching the wires only changes the phase of the Fender pup.
On the Jackson pup, the green and black are ground while the white and red are the hot side. Just solder the white lead of the Fender pup to the pup selector hot side and the blue lead to the ground.

This pertains to the white keys. If you need to take out a black one, you MUST remove the white ones alongside the black one first.

You push the back end of the key forward (takes a little bit of force) and then lift the back a bit to dis-engage it from the back rail. There is a flat spring under the key. Note how it sets in place.

When re-installing make SURE you get the front of the key engaged with the little lever before attempting to push it forward and down to re-engage the back in the rail.

Given its age, this unit needs a little TLC. Units of that vintage used some capacitors that may have dried out a bit and need to be replaced. There are also op-amp ICs internally that may be defective. I would suggest a visit to a service shop that works on keyboards as not all do.

Keep us posted.

Dan

Please try to reset the ewi. You can do this like this: Shut down ewi. Press down the four little white buttons Level, FX, Setup and Trans. Keep them pressed while starting up the ewi.
This is a factory reset.

I hope this works for you.