@shelestoff
I made this video a month back of the clicking noise.
This is on the side of the Dahua NVR retail box:
DHI-NVR5432-4KS2
Weight: 6.50Kg
Size: 530mm*500mm*210mm
P/N: 1.0.01.23.11911
Made in China
Date: 2019-06
No. 1199, Bin'an Road, Binjian District, Hangzhou, P.R. China
I have confirmed 1000% (one thousand percent) that without a doubt, the clicking noise is from the "Zhejiang HKE HRB1-S-DC5V" solenoid relay. This solenoid relay is a mechanical based relay. I have also identified exactly which one is causing the issue for me circled in orange.
Again, I will reiterate ONE more time. The NVR54xx series has more relays than the NVR52xx series so you will not see this issue on the NVR52xx. I also have two NVR52xx series that I installed for family, and they do NOT have this problem. I know there is an "ALARM" menu where you can switch all ALARMs from AUTO to MANUAL to OFF. I have switched it all to OFF and MANUAL. Same problem.
My guess is that the solenoid is not broken because v3.216 doens't have this problem. My guess is the driver chip that controls the solenoid is not initialized properly during boot. So it gets stuck in some "loop" state where it continuously cycles the solenoid 5v supply.
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