sr1200
Well-known member
Schematic: https://files.mycloud.com/home.php?brand=webfiles&seuuid=33161158458ec7f148b52dcfd183719b&name=ga78
This amp had been sitting in my mothers basement for what has to be over 40 or 50 years now. It has no tubes in it, but doesn't look too dried out. I'd like to replace the caps, but not quite sure which ones to replace. There is a large cap that looks like a stick of dynamite in the middle that I had a replacement custom built (it says 20+10+10M on it with 450WVDC (working volts DC, I dont see a VSP rating on it as some of the others have)) but what i received has 3 160vdc ratings for the 3 values. Do i add that together or is the whole thing supposed to be 450 for each value. I can't seem to find it on the schematic, since i can't really tell what its actually connected to (until i drop the chassis).
In addition there are a pair of 20u 25wvdc 40vsp which look like they might be for the heaters... they KIND OF look like electrolytics, but not exactly. I ASSume it wouldn't matter much if this is just to support the heaters if I use an electrolytic.
Thanks
This amp had been sitting in my mothers basement for what has to be over 40 or 50 years now. It has no tubes in it, but doesn't look too dried out. I'd like to replace the caps, but not quite sure which ones to replace. There is a large cap that looks like a stick of dynamite in the middle that I had a replacement custom built (it says 20+10+10M on it with 450WVDC (working volts DC, I dont see a VSP rating on it as some of the others have)) but what i received has 3 160vdc ratings for the 3 values. Do i add that together or is the whole thing supposed to be 450 for each value. I can't seem to find it on the schematic, since i can't really tell what its actually connected to (until i drop the chassis).
In addition there are a pair of 20u 25wvdc 40vsp which look like they might be for the heaters... they KIND OF look like electrolytics, but not exactly. I ASSume it wouldn't matter much if this is just to support the heaters if I use an electrolytic.
Thanks