Top 20 Crown CE1000 2-Channel Amplifier - Page 4 Questions & Answers

Unfortunately, there may be a number of reasons. it would be much easier to diagnose if were taken to a n authorized repair center. Here is the link to Crown support- Service Centers

I would suggest you take it to your local Crown repair depot. It sounds like a fault in the internal protection circuits or the outputs are blown. Without a lot more information I cannot help.

Check speaker to power bank protection circuit. The circuit is faulty indicating to the power amp that speakers are disconnected that shuts down the amp to protect the unit

Power output amplifier circuit should be checked. If there is any delay relay fitted, its drive circuit too should check. Check all the components at the main power amp output section. Refer its schematic diagram for more details. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. Surf the site with patience. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

Please, what is the problem, what is the question?

That is a subjective statement. You need to measure the SPL at the speaker and check against the specs and also measure the power from the amp to have the data to check and compare with. That will give you an objective answer. You could have lost part of your hearing, I do not know!

Switch speakers, could be a speaker problem, there could be an open cable from the pre amp

Ok,Lets get this straight, you are saying that a CROWN MICRO-TECH2400 power amplifier show the two front red lights when you turn it on? Because it supposed to do that if everything is fine, when you turn your amp on and one of the lights or both don't turn on then you have a serious issue with this great amp, keep me informed in case you need further help.

Interchange speaker, and input cable

I have the same problem,can be like David says,should try and test tonigth some more suggestions,some!

HelloCheck the voltage comes to the fan first. If voltage is there and fan does not spins, either the fan is strucked by some external substances like dust or so. Check whether it can be turned freely by hand. If there is no fiction found in tuning the fan, replace it. It is faulty. If it is dusty, clean it. OK.

HelloPlease explain more. What actually do you want to know, and to get assistance? Your problem post is not clear to understand. Please repost it with some more details. OK.

The problem is that the potentiometer that the knob is connected to is dirty. This is a common problem with age, or quality of installed potentiometer. (potentiometer is the name of the component that the knob attaches to. It usually looks like a 1/2" long cylinder)

There are multiple solutions to this problem. The first is free & anyone can do. While the unit is off. Twist the knob back and forth quickly and rapidly numerous times. Roughly 10-15 times will do. This sometimes allows for the connections within the potentiometer to reconnect, and remove the crackle.

The second solution involves some handy work. The unit's case will have to be disassembled, and the potentiometer that the knob is attached to must be found. There is usually a relief hole somewhere on the housing. Within this relief hole one can spray contact cleaner. This cleans the contact within the potentiometer which is the cause of the crackle. Once the pot has been sprayed, rotate the knob like in step 1.

If steps 1 & 2 do not work, the potentiometer will need to be replaced. This work usually needs a professional. If you are handy with a soldering iron, it can be accomplished. Look for any particular part #'s on the crackly potentiometer, and then copy these into a online parts catalog. Mouser.com and Digikey.com are excellent resources for finding parts. Upon finding a replacement, it can be swapped out, and provide the user with a crackle free knob.

As always, make sure power to the unit is disconnected. If you are unsure of electronics, please use caution, as dangerous voltages may reside that can cause personal injury.

check the bad side with a known good speaker first.If it still doesn't work most likely burned out that side. Usually a power IC chip depending on model.

Question...does the problem occur when the power amp is on only by itself ( no pre amp power ).

If it does, then because of the age of the amplifier, it could be either a capacitor, or a transistor has died. Capacitors and transistors both have age issues. Since that is a nice amplifier, I would suggest taking it to a shop because there are MANY things that can cause this condition. Subsequently, because of the age, if one component has failed, there are sure to be more to come. If you wish to keep the amp, you should consider getting it rebuilt. Hope this helps... Rob

Hi,
Yes, I can provide you schematics of Crown IC-150
Click HERE to download required sechamtics, check 4th entry in list on that page, right click the link and select Save Target As to download pdf schematics file directly in your computer.
Hope these info will help you.
Let me know if you have additional question.
Thanks.

Hi

Please check this link to download the manual where you will get the related answer regarding your query..

http://www.retrevo.com/support/Crown-CE-4000-Amps-manual/id/22150ag317/t/2/

Let us know if you have somethin more to ask else accept the suggestion.
Thank You for contacting Fixya

common problem with xti series... all the amp needs is a soft ware update contact crown and they can sort it for you... you dont have to send the amp back to them. it was a verry common fault with all the early xti amps..

Do you know for a fact that you do not have a working board? If there's a problem with anything from speaker mismatch to loose transits, the board will not operate. This receiver is made of discrete components so, it couldn't be that hard to fix or maintain. But if you want a new or used one, they have them on ebay though there a little pricey.

THIS PROBLEM CAME FROM POWER SUPPLY FILTER CAPACITOR
OR MAINCIRCUIT ON AMPLIFIER..