Apogee Rosetta 800 power supply problem

[Mundox]

Hi guys.
After the holidays I came to studio to power up the Apogee 800 with no luck. The soft power button did kick in in the relay initially but something went wrong and all I hear now is a ticking noise, and the red power led blinking dim. Ticking noise slows down to halt when I take the power cord off.
Anybody else has this unit that had a similar issue?
cheers
Vedat

 

[dasnevestheo]

Hey,
Same issue here, did you find a replacement PSU ?
Thanks

 

[zamproject]

Hello

According to the inside picture I find for this unit, it look like standard OEM SMPS
like this:https://fr.rs-online.com/web/p/alimentations-a-decoupage/1830054/

you'll find various brand and power rating with this exact pcb size, hole spacing, as connector

still it's just a guess... you have to check by yourself, can you open the unit and post pictures ?

Best
Zam

 

[dasnevestheo]

Thanks a lot !
It could be this one or a mean well.. I'll check later.
The issue comes from the SMPSU indeed, 5V rail is shorted.
Thied to quickly find the faulty component but I did not had enough time as this happened during a recording session ...
:-[

 

[Khron]

Is the 5V rail shorted within the power supply, or on the main board?

I seem to recall Ensembles had a few cases where some of the tantalum caps s**t the bed. I revived one myself a few months back, but that "only" had one tant shorted in the ch1/2 input opamp area (and the resistor "upstream" of it, blown).

 

[dasnevestheo]

within the psu, i disconnected it

 

[[silent:arts]]

Have had this problem a few weeks ago. Replaced two or three caps in the PSU and the Rosetta is up and running again.

 

[dasnevestheo]

I've changed nearly all of them in the 5V path but can"t find the lil bastard thanks a lot you guys