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XTI 1000 and XTI 4000 no power


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#1 luckie_boie

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Posted 10 July 2012 - 08:08 AM

I was working as an ICT support in one university and we are using crown amplifier in all the auditorium and halls for almost 5 years. Recently I have some problem with 3 of the crown device. 1 XTI 1000 and 2 XTI 4000, all are black out or no power. Fuses are intact and I can’t find the component having the issue. Are there any know or particular issues regarding power for this models, because it’s happen all at the same time? Can someone give suggestion or advice regarding the same? Appreciate your help. Thank you.

#2 joust

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Posted 11 July 2012 - 03:37 PM

I would suggest you get in touch with Crown and request the XTI schematics for your units. Usually, the problem is with the SMPS bootstrap circuit. Verify for faulty caps (.1UF SMT)! I'd also make sure that the K-Start cap is within tolerance.

Regards,

joust

#3 luckie_boie

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Posted 12 July 2012 - 01:01 AM

Thank you for the respond. I will check and verify.