PSB SubSonic 5i problems- no go

[Philipkiong]

Hi, my set could not power up dead set. I need the service manual of POSB subsonic 5i. Can someone kindly forward to me a copy. Thks

 

[nmm69]

BASH Psb subsonic 5i ??????

 

[nmm69]

you can get the service manual hereBASH Psb subsonic 5i ??????

 

[AshishJamesh]

PSB Subsonic 6I

At first you should disconnect the power amp from the supplies to check whether it is the smps or a blown amp.
I had to repair some old harman kardon amp with quite similar smps - and I must say these pulse-width modulated veteran circuitry was a nightmare by design.
They blow up during power on and I had to design in some additional circuitry to prevent this from happening.
All in all, quite bad designed smps.😱

I have dead PSB Subsonic 6i with issues in SMPS. Is it possible to change only SMPS with any other SMPS? Do you have its schematics? any idea to repair the smps?

 

[Jeffstona1]

Psb subsonic 5i not working

Hi I also have the same problem with my Psb subsonic 5i not working. Does anyone have a service manual they could send me?

 

[dudaindc]

How about the link in post #22?