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Old 17th April 2013, 09:03 PM   #1
diyAudio Member
Join Date: Apr 2011
Default Crown xti repair troubles.


I'm trying to fix the power supply of a crown xti (service manual here (link valid for 2 weeks, happy to share after that though)). I'm a bit out of my depth. I think its the control mechanism that's damaged in some way. It appears to be a self powering comparator circuit that supplies a kickstart voltage to start the SMPS. But I don't really understand what's going on well enough to fix it.

Can anybody help? The schematic is on page 75. Operation description is page 25.
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Old 18th April 2013, 11:05 AM   #2
diyAudio Member
Join Date: Apr 2011
Hi. Its on eserviceinfo also as a multipart.

Crown XTI series Service Manual free download,schematics,datasheets,eeprom bins,pcb,repair info for test equipment and electronics

Thanks in advance for any help with the circuit.
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