I have a CROWN CE-1000 amplifier, I have my serious doubt about it can´t be repaired as a friend told me, Where may I find out a complete schematic for this amp. model. For sure, I will need a transistor and may be a couple components more. I´ll appreciate any help. Alvaro Perez
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It sounds like your output transistors are bad or power supply problems. You will need to have it serviced unless you know about electronics and how to repair them. Do not attempt this yourself unless you know what you are doing. It could be fatal.
Depending on the configuration of speakers you have it will deliver different amounts of power up to 1950 watts when used to power a single 4 ohm speaker. Typical usage would be powering a pair of 8 ohm speakers, in which case it will deliver 400 watts per channel/ speaker.
Before asuming it is the power transistors check the power on relay first as mine had the same proble and it was because of the Relay that did not switch on the one channel or amp (remember this is a power amp and consist of two mono amps)
I have a working CE2000, I might be able to help you identify the value of the parts....please send me pictures of the part location and indicate with an arrow. [email protected]
There is a fan drive circuit in these that will control the fan speed depending upon the load on the amp. It sounds like this citcuit is defective, This unit should be sent in for service. Crown units are not the easiest to repair and I would not suggest it be attempted without prior experience. This should not be an expensive repair.
Is it clipping for real or overheating ? It may just be a fault with the indicator light circuitry itself.
Make sure the input levels of the amp are matched with the output levels of whatever device is running into the amp, they will either be +4 dbm or -10 dbu, if you have a choice you want them to be set at +4 dbm.
Crowns are professional amplifiers and withstand years of hard touring on the road, it would definitely be worth it to take it to a good repair shop if you can't remedy the problem yourself.
Look first at the output transistors. Those are the most likelt defective parts. Due to the odd design of the output section, Crown amps are difficult to repair. If you get lucky, only the outputs are smoked. Also, make sure that you change all of hte transistors for the channel that has a bad one.
Dan
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