When you use the input from CD how do you get it to be heard on the speaker?

There are many causes of buzz, so it should be checked step by step :
- Bad connection on the input connector, or cord.
- Amplifier, basically have the block diagram like this:
If in one block damage, buzz can be heard.In the amplifier.
Generally occurs in the PSU and / or power amplifiers.
Fix it to the experts,because it requires a good knowledge of electronics.
Blown speaker cone, does not cause a buzz.
Short circuit along the wires supplying the audio, it will not cause any sound in the speakers, including the sound of music.
Try also, disconnect the input connector, whether the buzz is still audible. If after the input connector is removed, the buzz disappears, the possibility of buzz came from another device before the amplifier.

There are many causes of buzz, so it should be checked step by step :
- Bad connection on the input connector, or cord.
- Amplifier, basically have the block diagram like this. View image.
If in one block damage, buzz can be heard.In the amplifier.
Generally occurs in the PSU and / or power amplifiers.
Fix it to the experts,because it requires a good knowledge of electronics.
Blown speaker cone, does not cause a buzz.
Short circuit along the wires supplying the audio, it will not cause any sound in the speakers, including the sound of music.
Try also, disconnect the input connector, whether the buzz is still audible. If after the input connector is removed, the buzz disappears, the possibility of buzz came from another device before the amplifier.

Whether you are experienced in electronics repair?
if not, try this simply way:
1: Test whether the power amplifier is still working. See figure 1.
Power OFF,adjust the EQ settings as shown in the picture.
Minimize LEVEL.Switch ON Power. Touch pin 3 at the INPUT socket by using a small screwdriver or piece of wire / cable.
Slowly raise the LEVEL,a little bit only (as the clock showed 7-8) until
sound is heard in speaker. If not heard, slowly raise again LEVEL.
If audio input signal is heard,it can simply be taken to mean
that the amplifier is working.
If LEVEL at 9 o'clock position,and the audio is not heard,
the possibility of the amplifier is damaged.
Switch OFF the power. Take it to a repair place.


2: When the Power LED is lit, but no sound,
There are many possible causes, one of which is:
I have been getting 3 times similar cases, and all are caused by
two Rectifier-Diode (either or both.) damage on the power-supply-unit.
Remove/desolder,measure, if damaged replace it with a new one.
See figure 2-3.




Hope it helps. Regards.

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The signal path to follow is explained below:

*Audio Source(Cd/LapTop/Ipod)output to,
*Numark 5000FX Input, Then master/main outputs go to,
*Behringer FBQ1502 Inputs, then outputs go to,
*Pro600 Power Amplifier Inputs, then power amp outputs hooked up with a speaker each side.

Hope this helps.

This could be fixed checking/changing the vol pot of the "B" channel, also i would highly recommend to clean all back switches, including Stereo/Bridge switch, which it should be outwards to operate in Stereo mode, let me know if i can help more.

You've made a statement, please give full information if you would like help. Is the buzz heard from the speakers or the mixer? Do you get normal sound too? Is it there with no input? Does it change with the output setting? Help yourself to get help and let us know properly what's going on.

The amp has a failure. One side of the power amp is starting to draw excessive current to the point that the filter caps can't sustain the current so the ripple starts to be heard in the speaker. Continued use MAY burn up the speaker by sending DC through it as well as causing additional damage to circuit boards, etc..

Hopefully you were powering ALL interconnected equipment from the SAME receptacle. People can destroy the input circuit of powered speakers by plugging them into a receptacle at the stage and then powering the mixer from another receptacle... Pro's know to power ALL interconnected equipment from the same source, be it a receptacle or a power conditioner to avoid ground bounce damage to equipment. They carry power from the stage back to the mixer on an extension cord. You may have had a static discharge that blew one side of the balanced input of the speaker. The parts are inexpensive, however the labor to get at the amp is usually not fun. I have the dual 10 powered Kustom's and one gets at the POWER amp via removing the speaker after the grille... HOWEVER that is to get at the power amp. The Preamp is probably the failure and it is right at the input plug area and you can get at that by removing the panel with the plugs and power switch and volume control.
I don't have the schematic. Look for shorted RF bypass caps on one side of the balanced input circuit and possibly a damaged input op amp.

Here is the manual if you don't have one:http://www.tascam.com/details;9,21,23,19.html Make sure your guitar cord is working. Make sure your are plugged into the Guitar/Mike input jack.Do not connect a guitar amp to this jack via line out on the amp or otherwise. Set the Guitar/Mike switch to Guitar. Use the Input control to adjust the level of the input.Adjust your Headphone level using the Output control.Carefully read pages 12, 13, 14 and 15 of the manual.There are various combinations of controls that would make your guitar too quiet to be heard. Example: Mix Balance page 24. Let me know if this helps.

Probably the easiest way would be to use a stereo receiver. You can run the headphone output of your ipod into a tape or cd input. The only thing to deal with will be adapting a stereo 1/8" (3.5mm) headphone type jack to 2 RCA type input jacks. You should be able to get this cord at radio shack. You might also be able to purchase a receiver that has a 1/8" input jack specifically for connecting things like an ipod. A receiver, by definition, has a tuner built into it. The alternative would be a tuner and an 'integrated amplifier' which has power amps to drive speakers as well as a pre-amp and input selection switching.