The ?caps? seem pretty wrinkled, but I have no idea about their ratings, so getting a replacement seems futile.
Their rating will be printed on the sides.
That said if there really is no printing it can be estimated from the size of the capacitor and referencing the size chart of any capacitor datasheet...
But you will need to know voltage, that can of course be measured...
The wrinkles could be completely normal, feel the top and if it is flat they are probably ok.
"The one who says it cannot be done should never interrupt the one who is doing it."
The tops feel flat, I suspect/hope it's *just* the soft starter. I'm currently ordering the parts (22ohm 10w power resistor + 48v 16a relay) and hope that this fixes it
But I've already assembled the amp and put it back in the rack, so I'll make them when I've got the parts and have to remove the starter for soldering anyway (since I've measured the resistor in situ I haven't done so yet).
Thanks, that's humorously close to the design in my first post on eevblog.
Probably with all the caveats I mention in my post at paragraph three there.
So if you want to make it better you can loan some ideas from that thread.
But if the datecode on your capacitors (week 45, 1986) is anything to go by it's good enough already!
"The one who says it cannot be done should never interrupt the one who is doing it."
Check the thread I linked on eevblog, it might have some details for use.
I would use an incandescent light bulb in series with the unit.
The problem on mine was that at a higher voltage the main filter cap was shorted.
If you blow the power resistor it could be something similar...
"The one who says it cannot be done should never interrupt the one who is doing it."
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