SA-9900 Output transistors + Refurb help
- Thread starter sajjad amer
- Start date
Jerry's TV
Active Member
AWR070 revB top view
SA-9900 top view (with hand-made replacement shield between transformer and control amp)
SA-9900 top view (with hand-made replacement shield between transformer and control amp)
sajjad amer
Active Member
Everything dialled exactly as it should be and it is working.
I cannot believe I have managed to do this.
I want to specially thank you @LesE @Jerry's TV @Goldie99 @glen65 @Hipocrates
I would have never ever done this without your help and guidance. 
I cannot believe I have managed to do this.I want to specially thank you @LesE @Jerry's TV @Goldie99 @glen65 @Hipocrates
I would have never ever done this without your help and guidance. 
Jerry's TV
Active Member
Whooo Hoo!!
And... you created a SA-9900 Restoration thread that we didn't have before.
And... you created a SA-9900 Restoration thread that we didn't have before.
Hipocrates
Super Member
Very nice job!! Kudos!
Rsclj
Active Member
hello all...I picked up one of the beauties for $0.00...but it was DOA, massive main filter cap leakage, no other "Obvious" signs of trouble (yet) but it does not power up...Starting with new filter caps and a rebuild of the PS boards and go from there...this thread was a god sent...
Jerry's TV
Active Member
Keep us posted on progress. It's great amp once you get it sorted out,
Rsclj
Active Member
well the initial inspection shows some issues...nothing in the way of blown fuses but the main filter caps are shot and have leaked...the PS (AWR070) has been hacked upon...some transistors have been replaced and the traces have been royally screwed (on leg of several transistors can be moved thru the board and the trace moves with them) parts for this board were ordered and have arrived so I guess its time to dig in for a total board rebuild. repairing those screwed traces could be interesting, I may have to desolder the wire pins to gain proper access to the foil side of this beast...I will try to unbundle some of the wires to see if I can get a bit more slack...pulling the bad main filters will also give me some more room.
