Raul
Active Member
I am finishing the restoration of my Stromberg-Carlson ASR433 (the one that had voltage problems, subject of a thread two weeks ago), I replaced nearly all resistors, coupling caps, all small electrolitycs and also two of the four electrolytics of the can cap (when I was still looking for the cause of the voltage imbalance).
Now the amp works fine and the only original caps remaining are the 20uf electrolytics of the can cap.
Most people say that it's better to replace them all anyway but I am tempted to leave them alone for the following reasons:
- voltages in the amp now are ok and the two capacitors have voltages very close to shematics 312 (315) and 260 (265)
- I measured them with an ESR tester and they measure .99 and 1.1 while two new 20uf 450V measure around 2.2 so worse than the old ones (also the two 10f that I replaced in the PS had very low ESR and probably were still working well)
- the chassis is very shallow, space of work is very limited and to put two new caps there is a bit of a pain in the @ss
What would you do?
Thanks
Now the amp works fine and the only original caps remaining are the 20uf electrolytics of the can cap.
Most people say that it's better to replace them all anyway but I am tempted to leave them alone for the following reasons:
- voltages in the amp now are ok and the two capacitors have voltages very close to shematics 312 (315) and 260 (265)
- I measured them with an ESR tester and they measure .99 and 1.1 while two new 20uf 450V measure around 2.2 so worse than the old ones (also the two 10f that I replaced in the PS had very low ESR and probably were still working well)
- the chassis is very shallow, space of work is very limited and to put two new caps there is a bit of a pain in the @ss
What would you do?
Thanks