Hi there, I hope someone can help me identifying the problem I have with my Bell PCX 9024 amp. It's a professional ampflifier that can (normally) deliver 2x600 watts (4ohm) and 2x400 watts at 8ohm.
Lately the amp seems not to be able to give that power anymore.
It stil works, but you can't push the amp as far as before.
You can also see it at the LED's, the amp has several green LEDs and two red LEDs. At 1st you could push the amp so that the 2e red LED was blinking, no distortion or whatsoever. But now when I turn the amp upto the 1st red LED that amp allready starts to distort and when I push it a bit further the amp shuts into portection mode. You also hear clicks and pops when it distorts, especially when the limiter mode of the amp is turned on.
I know it's NOT the loudspeakers, I tried several.
I allready opened up the case to check out the tranistors, none of them is getting even warm when I push the amp.
Someone allready told that it could be the large capacitors, because when they don't work correctly the amp gets a powerfailure. Is that right?
There are four of these big guys in this amp (33000uF 63v). When I try to discharge them I noticed that one of them is still charged, one other a bit and the other two not at all. Could this be sign of bad capacitors?
I'm not a electronic wizz so I ask you guys overhere (I'm most of the time in the loudspeaker forum) to shed some light on this problem.
Lately the amp seems not to be able to give that power anymore.
It stil works, but you can't push the amp as far as before.
You can also see it at the LED's, the amp has several green LEDs and two red LEDs. At 1st you could push the amp so that the 2e red LED was blinking, no distortion or whatsoever. But now when I turn the amp upto the 1st red LED that amp allready starts to distort and when I push it a bit further the amp shuts into portection mode. You also hear clicks and pops when it distorts, especially when the limiter mode of the amp is turned on.
I know it's NOT the loudspeakers, I tried several.
I allready opened up the case to check out the tranistors, none of them is getting even warm when I push the amp.
Someone allready told that it could be the large capacitors, because when they don't work correctly the amp gets a powerfailure. Is that right?
There are four of these big guys in this amp (33000uF 63v). When I try to discharge them I noticed that one of them is still charged, one other a bit and the other two not at all. Could this be sign of bad capacitors?
I'm not a electronic wizz so I ask you guys overhere (I'm most of the time in the loudspeaker forum) to shed some light on this problem.