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Old 15th June 2019, 09:33 PM   #651
D3nsityD3nt is offline D3nsityD3nt  Italy
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Hello everyone.
I was working on my PS for the Cronus board. Constructing PI filter in configuration LCLC. I had first choke dying on me while powering up. It was 10VDC spike. At least what I could capture on my meter. After that no more sound. All seems to work though. I even reinstalled os on BBB to be sure is not the botic itself doing problems.

Before I do any new purchase I would need to know whether it is just board that failed, on maybe Rhea clocks. Did any of you had this kind of failure caused by overvoltage before? Or maybe some of you did reparations on the board. The board itself is not to coplicated.

Any advice apreciated.
Regards
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Old 16th June 2019, 02:10 AM   #652
BrianDonegan is offline BrianDonegan  United States
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Hermes-BBB/Botic cape for BeagleBone Black
Quote:
Originally Posted by D3nsityD3nt View Post
Hello everyone.
I was working on my PS for the Cronus board. Constructing PI filter in configuration LCLC. I had first choke dying on me while powering up. It was 10VDC spike. At least what I could capture on my meter. After that no more sound. All seems to work though. I even reinstalled os on BBB to be sure is not the botic itself doing problems.

Before I do any new purchase I would need to know whether it is just board that failed, on maybe Rhea clocks. Did any of you had this kind of failure caused by overvoltage before? Or maybe some of you did reparations on the board. The board itself is not to coplicated.

Any advice apreciated.
Regards
You really do not need anything special to power the Cronus, as the onboard ADM regulator powers everything on the chip and will dominate performance.
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Old 16th June 2019, 08:43 AM   #653
D3nsityD3nt is offline D3nsityD3nt  Italy
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From technical point of view yes. From timbre and sound performance no. Better ps better sound. I have done like 5 or 6 different and high quality ps to it. Before I have concluded that PI filter is the andswer to get the optimal performance. Didn't try the battery though. This will be next.
But for now the board is brocken.
Do youi think that onboard ADM regulator is fried?
Would that be IC5 position or IC3?
I'm still getting 3.4v reads on positive rails on all aluminium capacitors (C11, C12, C10) if that helps.

Last edited by D3nsityD3nt; 16th June 2019 at 08:50 AM.
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Old 16th June 2019, 09:57 AM   #654
D3nsityD3nt is offline D3nsityD3nt  Italy
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CORRECTION

ButI'm still getting 3.28v reads on positive rails on all aluminium capacitors (C11, C10) AND 5.2 (C12)

In addition IC5 reads:
on oposite side to the input of the ADM7150:
1st leg closest to C10 no read, (GND)
2nd leg 3.28V, (REF_SENSE)
3rd leg 3.28V, (REF)
4th leg 3.86V. (VOUT)
Legs on the input side:
1st leg closest to the C10 3.29V, (VREG)
2nd leg 3.29V (BYP)
3rd leg 5.19V input voltage, (EN)
4th leg 5.19V input voltage (VIN)
Is it working properly?
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