Hello!
I have the Kurzweil Mark Pro TWOi piano. Suddenly some keys make strange sounds through the speakers, like distrortion or noise. The speakers seem to be fine, because the demo songs play perfectly. Some voices are completely distorted, while others have problems on certain keys or depend on the pressure applied. Please, help me if you can, because playing is useless and I'm in great need of my piano. Thank you.
Re: Hello!
I have the Kurzweil Mark Pro TWOi piano....
Try to re-initialize the unit(factory reset). If the keys are the problem then the rubber key contacts need to be cleaned or replaced. Contact a local service center for help.
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1. Turn the Kurzweil off
2. Hold down the KEY START, KEY STOP, and LAYER VOLUME buttons for 5 seconds while powering the unit up, then release
3. Select RUN DIAGS
4. Press the UP arrow until the display reads RAM TEST
5. Press the START/STOP button to run the test
6. When the display reads SUCCESS, turn the unit off and back on. The unit is now reset.
If your Kurzweil still does not come up to the normal screen after this procedure, it will require service.
The place to get the best help for Kurzweil gear is Sweetwater Sound.
Other than that, always use it in stereo mode with a decent sound system. Always use speakers with at least a 15" woofer and a horn to get the full range of sound it's capable of.
The Kurzweil SP3X is a popular stage piano known for its high-quality sound, responsive keyboard, and versatile features. Some of the advantages of the SP3X include its excellent sound quality, which is achieved through Kurzweil's advanced sound engine and a variety of realistic instrument sounds. It also has a highly responsive keyboard that is suitable for playing a wide range of musical styles. Additionally, the SP3X has a variety of features that make it a versatile and useful instrument for live performances, such as its built-in sequencer, arpeggiator, and various effects. Overall, the Kurzweil SP3X is a reliable and powerful stage piano that is well-suited for both professional and amateur musicians.
It sounds like there may be an issue with the piano sounds on your Kurzweil sp4-7 keyboard. One possibility is that there may be a problem with the software or firmware of the keyboard, in which case you may need to update the software or contact the manufacturer for assistance. Another possibility is that there may be a problem with the internal hardware of the keyboard, in which case you may need to have it repaired by a professional technician. In either case.
I don't know what you "tested" the power supply board with, but I would use an oscilloscope to look at the outputs to see if any of the regulators are drooping. Clicking is a broad term... if it is a relay, it PROBABLY is for speaker protection and senses balance of the power amps.
With a two minute delay, this is PROBABLY a thermal issue... Use freeze mist/circuit cooler to find suspicious parts.
The contacts of various switches and keys are likely dirty. They are often conductive rubber and need cleaning with 99% isoprophly alcohol and q-tip. Clean both the conductive rubber pill and th circuit board traces they contact.
I don't see you doing any damage by having a look but I would get a piano tuner or repairer in to investigate the problem expertly - no slight on you. But if your Church congregation depend on it it's well worth the money.
Good Luck
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