GK-3 - The emergence of "noise" background

Started by Alex1872, April 03, 2013, 04:20:08 AM

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Alex1872

Fault.

The appearance of an animated noise. Because of the effect of static electricity on the pickup. Due to the fact that the aluminum body cartridge has virtually no ground, in consequence of which leads to the failure of one of the operational amplifier of the sensor analog GK-3.

Solution to the problem until much later.

Elantric

Its important in some regions to use the short 1/4" guitar cable between the GK-3 and your guitar's Output jack.
This should tie the GK-3 and GR-55 to the same Ground / Earth potential as your Guitar's Ground and Guitar Strings.

This should help tame background noise, and electrostatic charge which could blow opamps on the GK-3.


Alex1872

Thank you for your reply.

But the problem is not grounded. In the GK-3 is present manufacturing defect ... The two wires are responsible for the ground is not connected at all to the pickup. Perhaps this is due to poor quality supply of equipment to Russia?))) I changed two GK-3, and in both cases, the same trend can be traced ...

Kevin M

Is this an external GK3 pickup?  Are you certain that the problem is a defective unit?  If external, you should ensure that you plug the short 1/4" cable from your guitar out into the GK3 guitar input jack.

Elantric

#4
QuoteBut the problem is not grounded. In the GK-3 is present manufacturing defect ... The two wires are responsible for the ground is not connected at all to the pickup.

If its true you verified no ground connection between GK3 pickup and Control box , thats not correct and indeeed reflects assemebly  errors .

Take to a Roland service center for free warranty repair, or find a tech that can solder.

The metal cover surrounding the Gk-3 PU is designed to act as an EMI/RF noise shield - and should be tied to earth ground via the GK13 cable shield.