Getting back to you guys on the Citation 24 protect mode after getting it back from the tech today. Tech's note: Located and replaced 2 faulty capacitors in protection logic circuit.
I think I found a good tech. He says, disassembled and cleaned pc boards and chassis. Pulled speaker output jack. Plastic broken and cracked. Fabricated support for speaker output jack and jack panel. Checked components for correctness as much as possible. Bias is dead on. Resoldered a few suspect connections on output board. Inspected driver/regulator board-ok. Reassembled and bench tested. Works great. Flat rate $90
For anyone who might be interested, from the research and anecdotal info I found, I believe that the quality control issue regarding the factory bias settings is misinformation. A source who is an agon member told me that the left channel bias circuit board contained an error on both the 22 and 24 which does not agree with the schematic and which he found and corrected on his own amps.
I have run into owners on the net whose amps ran hot and the left channel subsequently burned up. I believe that at some point in production Harman found the error, if not before, then after the amps started burning up, and corrected it during production. Otherwise, I don't think there would be any 22's or 24's left.
Regards,
Lynne
I think I found a good tech. He says, disassembled and cleaned pc boards and chassis. Pulled speaker output jack. Plastic broken and cracked. Fabricated support for speaker output jack and jack panel. Checked components for correctness as much as possible. Bias is dead on. Resoldered a few suspect connections on output board. Inspected driver/regulator board-ok. Reassembled and bench tested. Works great. Flat rate $90
For anyone who might be interested, from the research and anecdotal info I found, I believe that the quality control issue regarding the factory bias settings is misinformation. A source who is an agon member told me that the left channel bias circuit board contained an error on both the 22 and 24 which does not agree with the schematic and which he found and corrected on his own amps.
I have run into owners on the net whose amps ran hot and the left channel subsequently burned up. I believe that at some point in production Harman found the error, if not before, then after the amps started burning up, and corrected it during production. Otherwise, I don't think there would be any 22's or 24's left.
Regards,
Lynne