Question about Kenwood KAC-7203 Car Amp

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Amplifiers not working ,they ar switching on bat in a sekunde switch off,the center unit its working,and ther its no sound I have DNX 7200 and 2 amps KAC 8403 and KAC 7203

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Do have ur remote wire connected to u amp wire on ur stereo if not connected there. check ur ground

Posted on Jun 29, 2009

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I have recently purchased a an XLS1000 amplifier. If the speakers (Peavey Hisys 2) are connected and the amplifier then switched on, an error code is displayed (LEDs sequenced in red and displayed the...


It sounds like speakers are loading down internal DSP - contact any Guitar Center and ask one of their techs for sure. Double check your speaker connections also.

Feb 13, 2011 | Crown XLS202 2Channel Amplifier

1 Answer

Kewood dnx 7200


theres a short in the power, ground, or remote wire and if thats not it then you have internal problems like a resistor or cap

Jun 28, 2009 | Kenwood KAC-7204 Car Audio Amplifier

1 Answer

No sound from my record turntable into my computer.


If you're certain there is no sound going out of the TT...

Setting the Pre-amp Switch
For increased flexibility of use, this turntable has an internal
stereo phono pre-amplifier. The Pre-amp Selector Switch
is located under the turntable platter, in the rear-center
(Fig. 1). If the system amplifier you are using has a PHONO
input, set the Pre-amp Selector Switch to the “OFF”
position. If your amplifier does not have a PHONO input,
set the Pre-amp Selector Switch to the “ON” position and
connect the turntable’s output cables to the AUX or other
high-level input on the amplifier (described later).

Turntable operates, but no sound at all
1. The stylus guard is still in place.
2. The tone arm Lift button is pressed in.
3. Amplifier controls set incorrectly: wrong input selected,
tape monitor on, speakers switched off, etc.
4. Check the stylus on phono cartridge for correct placement.
Refer to the instructions for replacing the stylus
on page 5.
Turntable operates, but no sound, or sound not loud
enough
1. If the turntable is connected to an AUX (high-level)
input: The Pre-amp Selector Switch may be set to the
“OFF” position (phono-input level).
2. The input gain of the amplified speaker or similar
device may be too low.
3. The stylus assembly may not be fully seated in the
cartridge body.

You could also isolate the problem to either the TT or the PC by trying the TT on some other sound device like a receiver. Make sure the PreAmp Selector switch is ON and plug the TT into any AUX, CD or TAPE input.

Sep 02, 2008 | Nakamichi AV-7 Receiver

1 Answer

JVC dual bridgeble AMP


Have the speaker checked out and if it checks good you need to take the amp back to the repair center and have them test it better. Most repair centers have a 30 day warranty on the work they perform. Make sure they know what the problem is in detail, so they know how to check it properly. But my first thought is the speaker could be faulty. You can check the speaker yourself by switching them at the amplifier. If the same speaker sounds bad you know it is the speaker that is bad. If the sound is bad from the other speaker, then the amp is bad unless it is coming from the head unit. You can also switch the RCA input jacks after that and see if the problem changes speakers, if so, the RCA output of the head unit is bad, but that is less likely.

Jul 01, 2008 | JVC KS-AX4750 Car Audio Amplifier

1 Answer

Channel has switched off.


Make shure speaker wires are not crossed at amp or at speaker terminals. Check balance control is at center. Check sound with headphones to see if final amp to speakers is the problem. Try switching imputs on back panel from right to left see if same speaker is on,.Try all loudness controls and tape dubbing buttons to see if any are dirty.
Good Luck
BIG RED

Nov 03, 2007 | Audio Players & Recorders

1 Answer

No sound from speakers after mra-f350 connected to alpine w205


Did you set the digital output to the on position on the bottom of the head unit?

You have to switch the head unit off then back on for it to recognize the position of the switch.

Oct 27, 2007 | Alpine MRA-F350 Car Audio Amplifier

1 Answer

Integrated Amplifier - Volume Control Problem


Hi there, get down to your local electronics supplier and buy a tin of spray switch cleaner. Try and spray some into th v/control and do the other controls at ther same time, this should solve the problem

Aug 27, 2007 | Audio Players & Recorders

1 Answer

On and off switch


This is the thermal overload for the amplifier section. unplug unit and check all speaker connections for a crossed wire. After all connections are checked and are in good condition, plug the amp back in and power up. Note: the polarity of the speakers when the wires are plugged in. Use the painted line on the speaker wire as a guide for which one is positive(+) and negative (-). If an amplifier is operated out of phase for too long ( positive and negative reversed), you can damage the amp. A bad speaker coil can cause the overload as well. If it still does it, disconnect all speakers and power it up. If these remedies do not solve it, you amplifier IC is shorted and needs replaced.

Apr 10, 2007 | Kenwood AR-304

4 Answers

Marantz SR 7200


It is likely that the PA stage has developed an offset voltage in the output stage. The faulty amplifier channel can be found by progressively disconnecting the collectors of the of the power transistors until the protection fault disappears. Once the faulty channel is found the the cause of the offset has to be traced to the faulty transistor or resistor. Don't forget that if you can smell smoke or burning then there are likely to be components(esp transistors) that have been damaged by the fault.
I had a Luxman unit that destroyed 5 transistors in the output stage that was due to an open .5W resistor in the driver stage.
Good luck.

Jan 29, 2007 | Marantz SR-7200 Receiver

1 Answer

Amp


Make sure the amplifier is turning on. Remember ther is three wires that power the amp Battery constant, Ground which in a fiberglass boat run ground to battery not motor, Plus make sure the remote wire is hooked to power, generally it is switched power. But if the amp is not turning on temporarily hook remote and power together to battery and see if the amplifier turs on. Second be sure you have a good set of RCA cables hooking the radio to the amp. And finally check and make sure the gain is turned up on the amplifier.

Aug 31, 2006 | Dual 2-Channel Bridgeable MOSFET Amplifier...

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