20 Most Recent Crown XLS 602 2-Channel Amplifier - Page 4 Questions & Answers

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

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/

Interchange speaker, and input cable

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

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.

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.

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

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.

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.

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.