[SOLVED] Red LED not steady with BOSS and RPi 3 B+ USB-C supply

[stereo hifi]

System:

Raspberry Pi 3 B+

Allo BOSS HW Rev 1.5

Power source: linear regulated 5V 20A (Acopian 5PT20FHP) using the USB-C connector to the BOSS.

Software: Moode 4.4

 

The RPi  red LED is not steady on, but can be off for several seconds at a time. Voltage reading on the supply is stable. Haven't measured the RPi board voltage.

 

Function is flawless. Sound quality is fantastic. Extremely happy with the system.

The RPi/BOSS is behind the cabinet, can't see it, doesn't bother me, so no problem. Right?

Using a cheap $3 5V 2.5A SWPS and the RPi USB power connector in the same system, the LED is solid on.

 

Thank you Allo for a great sounding product.

 

 

[stereo hifi]

This issue has been noted in this Amazon review (not my review):

 

https://www.amazon.com/gp/customer-reviews/R2XH60HPSFJEX3/ref=cm_cr_dp_d_rvw_ttl?ie=UTF8&ASIN=B07191SYFH

[stereo hifi]

I've attached a video and pic. Video is blurred, but it's easy to see the red LED on the Pi flashing. Audio from the system is playing in the background, and at the end the power supply voltage is shown.

[stereo hifi]

My Acopian supply and the audio dedicated 3kVA toroidal line isolation transformer.

 

 

[ALLOsupport]

On 3/7/2019 at 10:02 AM, stereo hifi said:

System:

Raspberry Pi 3 B+

Allo BOSS HW Rev 1.5

Power source: linear regulated 5V 20A (Acopian 5PT20FHP) using the USB-C connector to the BOSS.

Software: Moode 4.4

 

The RPi  red LED is not steady on, but can be off for several seconds at a time. Voltage reading on the supply is stable. Haven't measured the RPi board voltage.

 

Function is flawless. Sound quality is fantastic. Extremely happy with the system.

The RPi/BOSS is behind the cabinet, can't see it, doesn't bother me, so no problem. Right?

Using a cheap $3 5V 2.5A SWPS and the RPi USB power connector in the same system, the LED is solid on.

 

Thank you Allo for a great sounding product.

 

 

Allo Boss board reverse diode available to protect the power supply , this will protect by mistake connection of RPI & Boss powering same time without removing J25 Jumper.

Single source powering through BOSS USB-C connector :  RPI will get 4.8 to 4.85 voltage  after small voltage drop on reverse Diode. It is in acceptance voltage level and will not affect the functionality.