Crown XTi 4000 Amplifier - Answered Questions & Fixed issues

Schematics are easy to find, just enter: schematic crown it4000 in the Google search engine. I cannot find any semantic

the other is defective?

details? what is short1?

the fans on these amps are heat sensitive, only when the amp heats up, then they come on

Power supply likely failed. Electrolytics are the primary culprit.It should have a switchmode power supply, so it is lmost likely the 5 volt section failed.

If you're using a microphone it's feedback, duh.
How to Eliminate Feedback
http://www.mediacollege.com/audio/howto/feedback.html

The fuses are on the inside

Switch off the amplifier for some time and allow it to reset. disconnect the speakers and reduce the volume level before you put it on. If the power does not come on you will need to probe inside. Get help if you are not familiar but check on the power lines coming in for failure of fuse, the secondary power supply section transformer or the smps power. Hope it would not go further to this but check this out.Check for shorting inthe outputs, if so disconnect and test. Good day

Try here:

http://www.crownaudio.com/express.htm

Hiya, to unlock press PREV and NEXT until it says unlocked.

The short 1 sounds a little serious though. Have you tried taking off the speakers?? If still there then suggest contacting crown. They have a pretty good no nonsense 3 year warranty

Best of luck

The only component I can think of that fits your description is a bypass capacitor for filtering high frequency interference. That should NEVER get hot. This amp is going into protective shutdown. This unit should be brought in for service. Continued attempts to run this will end up causing additional damage. Where are you located?

Dan

I would study the service manual and service notes to find out why the temperature sensors do not work. Probably a supply rail down I would think to affect both of them.

The Power Crown XTi 6000 is a power amplifier, and it sounds like it is activating its protection circuit and not generating a Pulse Width Modulation (PWM) signal. There could be a few different reasons for this behavior. Some possible causes include:

• Overheating: The amplifier could be overheating, causing the protection circuit to activate in order to prevent damage.
• Short circuit: There could be a short circuit in the amplifier, causing the protection circuit to activate.
• Input signal issue: The input signal to the amplifier could be causing the protection circuit to activate. This could be due to a problem with the source, such as a malfunctioning mixer or a disconnected cable.
• Output impedance or load mismatch: The amplifier may have a mismatch in output impedance or the load impedance which can cause the protection circuit to activate.
• Firmware or software issue : There could be a problem with the firmware or software that controls the amplifier, causing the protection circuit to activate.

Without more information, it's difficult to say for certain what the problem is. It's recommended to check the manual for troubleshooting steps and also check for any possible firmware updates. If problem persist it's recommended to take professional help.

Not most service manuals can be downloaded unless you use a model close to the original. Try service manuals.com

Google should have a manual for your 1000 amp thermal and also try on the companies official website too for a manual. Try searching on YouTube as well and YouTube should have videos about amp thermal on - Crown Audio Players & Recorders

http://www.fixya.com/tags/crown_amplifier_fault

Probable power transistor failure.

If you have eliminated any shorted speakers, cables etc, then the only other cause is a shorted device on the power output board. Probably a device on the heatsink.

Hello, Sylvia - I have no idea what entity you meant to receive your question. You posted in the Fixya.com website, which is intended for asking and answering questions on how to go about REPAIRING THINGS. Plus, your question landed in the Fixya category for Crown (brand) Audio Players & Recorders. Perhaps you meant to message Netflix, or your local public library, or a person from whom you borrowed the DVD, or someone to whom you sold the DVD, or . . . Best wishes.

Is the fan supposed to be on. On some units it runs all the time on others when the temp hits a certail level. Which is it for your baby?