Copland CSA-14 and CSA-28 Schematics

[Paul Roper]

@ limono Which caps did you replace ? Those 10000 uF ? Thanks

 

[vintageaxeman]

I had the biggish 10,000uF caps replaced with good Mundorfs when I did mine. It is a beautiful amp.

 

[Paul Roper]

Tks, what about the others electrolitics caps ? I am not sure to recap these too, they seem to be in good shape...

 

[limono]

@ limono Which caps did you replace ? Those 10000 uF ? Thanks

No , I replaced three of the small 220uF/50v decoupling capacitors and a zener diode in the regulator circuit. I would replace them all with 105 degree 63V parts since they have 50v rating on 42V rail but it was a repair and not refurbishment. At least that was the case in the amp I worked on .

 

[Paul Roper]

Another thing: I noted the IC 7806 (regulator for the tubes heating) is missing in mine, pls see the picture. There is a simple bridge but I don't know why, any thoughts ? Tks