Question about Chauvet 4play Led 4 Play Dmx Moonflower Light Bar

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Reset lights up with power but nothing comes from the lights

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Will a tascam m1600 function correctly without a specific power supply?

As long as your power supply is supplying the correct voltage and the amp rating is sufficent, and of course the power supply itself is functioning, then your problem is more likely to be a routing error somewhere.. it's probavbly best to center all controls, disengage all switches, and start over from nothing. You should also check that what ever you are using to hear the signal is functioning correctly as well.

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Unit powers on, is unresponsive

It sounds like you need to take it in for repair.

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My harmonizer powers up but does nothing else, and there's no display.

I hope that I'm wrong but my Boss GT-6 pedal went south on a firmware update and is now a door-stop. Good luck.


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I refcently purchased a MR16 Fostex it comes on lights up and shuts down . What is possibly wrong ?

Power supply. Most likely an electrolytic is failing. It may or may not show any signs of it. Other possibilities are bad solder connections, loose wire connections, or possibly a bad MOSFET if it uses a switchmode power supply. Also check the general construction to make sure nothing is shorting internally. Sometimes wires get pinched.

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I have a Williams Encore Digital piano. When I power up there is no sound. Upon power up there are 8 small rectangle on the LCD screen. 7 red light are lit. They are the 4 lights above the "user...

Holding the page up and down buttons while powering on supposedly resets it. I have no sound except demos, but no lights showing like yours, and williams tech support said to reset that way but it didn't seem to do anything. Good luck hope this helps!

Jun 27, 2011 | Williams Encore Digital Piano

1 Answer

Behringer Xenyx 2222fx doesn't power up. I've replaced the fuse and power cord, still nothing. When you flip the phantom power switch, the red +48V indicator light comes on on the front. Other than that,...

The Phantom power comes from a seperate winding on the switching power supply.Likely one or more of the other voltages are not present due to a failure of one or more components. The supplies are current limited so a short anyplace on the board may cause the problem. I had one of these short betwen the +/- 15 volt busses because somebody spilled liquid into it.

Here is a close schematic... a slightly different model with less channels, but circuoitry is the same, just more copies of it in yours: I believe it is zipped with four files... the last is the power supply.

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1 Answer

My Alesis D4 Drum Module shows squares in the Display screen and both the both the Store and Note Chase light come on and stay on. I have tried both a new power supply and pushing both the Voice and Output...

Open the unit and see if it has a battery that holds the settings. Check the voltage... it should be around 3 volts. If less than 2.5 volts replace it.

Verify the INTERNAL regulated power supply as the external you verified with new unit. The external is likely regulated within the D4 and either due to an overload or bad regulator may be below the voltage to run the processor. It is likely 5 volts and anything over 4.85 would be acceptable.

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Power light comes on but nothing else works.

There is a possibility that your plug on the adapter is the wrong polarity. See if the polarity is marked on your mixer by the power adapter jack.

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Psr-60 serial no 008012

Yamaha PSR 60. Power light comes on but no sound from any of the keys or anything else. Can anyone advise

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