Top 20 Gemini Sound Products Gemini GPA-4000 Professional Power Amplifier Questions & Answers

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How do u check pcb board on musical equipment and on other equipment the only tool i have to check is a Fluke Multimeter but is there any other stuff that is need to inspect and Diag. these boards ple

One of the first things a technician does with a voltmeter it to check 'all the voltages' in a system are correct.. Even without a specific circuit diagram for the board, 'Applications Notes' for chips and seminconductors will give nominal expected voltages in a working circuit. Remember you can burn out the meter by connecting it to any source of current when on the Ampere or Ohm settings. Technicians usially start at a high (highest) Voltage range setting and work downwards.. Providing the maximum Voltage is not exceeded on any range, whether it is AC or DC will not damage the meter. 'Fluke' by the way are a 'top end' professional product - check the price ;)
11/25/2014 10:03:02 PM • Gemini Sound... • 138 views • 1 helpful votes
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I want to manually wire my z-560

11/26/2023 6:36:51 PM • Music • 30 views • 0 helpful votes
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Looking for age/value of piano. I looked up all the numbers and can't find any matches. Inside the piano is has "A.B. Chase" stamped right in the metal, to the left stamped in black is 103220.

According to the information I found, the serial number 103220 on your piano indicates that it was manufactured between 1910 and 1915
10/28/2023 4:59:12 PM • Music • 47 views • 0 helpful votes
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How can purchase a replacement fader for a RadioShack SSM-1850

Try a good local electronics supply shop as Vince says or eBay. If you can remove it is will have a generic part number from the maker. With that you can Google the number. https://www.ebay.com/sch/i.html?_nkw=Mixer%20Replacement%20Fader&norover=1&mkevt=1&mkrid=711-156598-679417-4 Or you can get the whole unit for $50 https://reverb.com/item/11188486-radio-shack-ssm-1850-dj-mixer https://www.google.com/search?q=RadioShack+SSM-1850+replacement+fader ..
7/28/2023 8:36:25 PM • Music • 41 views • 1 helpful votes
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Hi the mike and or guitar doesn,t work any more ,no sound ,amp comes on though ,if there are fuses where are they please

As it is under warranty, get the seller to repair it free of charge.
5/30/2023 6:08:56 AM • Music • 47 views • 0 helpful votes
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How do I do transposition in e16 Roland?

To transpose a sound on the Roland E-16 keyboard, you can use the Transpose function. Here's how to do it:
  1. Press the FUNCTION button and then press the TRANSPOSE button.
  2. Use the + or - buttons to select the number of semitones you want to transpose the sound. The range is -12 to +12 semitones.
  3. Press the EXIT button to exit the Transpose function.
Once you have transposed the sound, it will be played back at the new pitch. Keep in mind that transposing a sound may affect the overall tone and timbre of the instrument, so you may need to make additional adjustments to achieve the desired sound.
3/19/2023 5:38:45 AM • Music • 123 views • 1 helpful votes
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Casio Privia PX-135 sound issues?

It sounds like you are experiencing a problem with your Casio Privia PX-135 keyboard. There could be several possible causes for this issue, including problems with the keyboard's internal hardware or software, or issues with the cables or connections between the keyboard and other equipment. To troubleshoot this problem, you could try the following steps:
  1. Check the connections between the keyboard and any other equipment, such as an amplifier or speakers. Make sure all cables are securely plugged in and not damaged.
  2. Try a different set of speakers or headphones to see if the issue is with the keyboard or the output device.
  3. Check the keyboard's settings and make sure that it is configured correctly.
  4. Try resetting the keyboard to its factory default settings. This can often resolve issues with the keyboard's software or firmware.
If none of these steps help, it is possible that
1/1/2023 10:10:07 PM • Music • 81 views • 0 helpful votes
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Is there a way to factory reset a Yamaha PSR-E403 - 61-Note Portable Keyboard? (or) any way to get a manual/instruction for it? Please Help.. Thank You So Much

Question edited for clarity, full 'make model (what it is)'. Here is the manual http://www.midimanuals.com/manuals/yamaha/ypt-400/owners_manual/psre403_en_om.pdf Press CTRL+F to use the find feature to find 'reset', ignore 'preset' which messes the results to 16 mentions.
1/7/2023 6:48:10 PM • Music • 63 views • 0 helpful votes
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Orla GT8000 electronic organ. Where can I purchase the bolts/screws to secure the top manuals to the bottom cabinet please?

Question edited for clarity, and it appears to be an 8000 not 800. Question moved from Washing Machines category. No maker, no parts lists. The best bet is the fixings aisle in Home Depot. https://www.google.com/search?q=orla+gt8000+parts+manual ..
12/6/2022 5:07:45 PM • Music • 36 views • 0 helpful votes
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I have an electone organ that when turned on its all static nothing else

If you have speakers connected to it, disconnect them to see if the static stops. If there are no speakers clean the on / off switch and any volume controls with electronic switch cleaner. Other ideas here https://www.google.com/search?q=electone+organ+static+noise ..
9/9/2022 2:32:58 PM • Music • 92 views • 0 helpful votes
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CVP-609 Digital Piano I have a Clavinova cvp 609. It is showing Internal Data Error on startup and will not turn on nor any buttons work.. have to unplug to turn off

the 100+ page manual has no words on data errors. so no history told when did it last work good.? try unplugging it over night an retest. the only 2 cures are: 1: buy there full shop manual and diagnose it. 2: get it serviced. you-do-or they do.
8/14/2022 12:06:47 PM • Music • 66 views • 0 helpful votes
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FenderCyber-Twin SE Broken Preamp Board Replacement?

I suggest you try Ebay.Unfortunatle I see this kind of problem a lot where parts for not really that old products are unobtainable.
5/27/2022 3:44:10 PM • Music • 101 views • 0 helpful votes
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My peavy kb1amp no switch on?

Try changing the batteries.
5/23/2022 4:29:44 AM • Music • 73 views • 0 helpful votes
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Ronisch Upright piano history

4/4/2022 1:40:13 AM • Music • 165 views • 0 helpful votes
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Lowrey Fiesta LC25 Organ. Where would I find a repair manual for it please?

Question edited for clarity, spelling of maker name Lowrey / Lowery. $50 on eBay. It is a combined Owner / Service Manual. https://www.google.com/search?q=lowrey+fiesta+lc25+organ+service+manual ..
4/2/2022 5:31:56 PM • Music • 114 views • 0 helpful votes
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My Baldwin organ is making a humming noise

There are parts in electronic music devices that change the electricity and filter it. The parts age an lose the ability to do that.
2/21/2022 3:35:27 PM • Music • 263 views • 0 helpful votes
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My organ which is a Baldwin viva MCO SERIES is making a humming noise when I turn it on.

It could be bad shielding on cables. It could be close proximity to electrical interference. It could even be next doors fridge. If it is steadily getting worse, it is likely to be failing capacitors inside.
2/21/2022 3:16:46 PM • Music • 143 views • 0 helpful votes
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My technics sx-px222 digital piano suddenly has no sound but all lights work and i hear a very very slight hum. Fuses look ok. What do you recommend i try next?

Hi, please check that the volume-down button isn't stuck and therefore forcing the volume of your piano to decrease. You might wiggle the button from side to side if you noticed that it's stuck. If possible, attempt to route the piano sound to an external speaker and see if you receive the same results as you initially did. Thank you.
2/9/2022 8:57:30 PM • Music • 120 views • 1 helpful votes
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