As I'm working recently on recapping of all my machines older than 20
years, I'd like to ask more experienced colleagues here few questions:
- In Old Crow's document about repairs of vintage synthesizers it's
recommended to change all tantalum capacitors for standard
electrolytic capacitors of the same value. Why should it be done? I
suppose there had to be some reason why there was used tantalum in the
original spec...
- Should I add capacitor to each IC's between plus and minus power
lines where they are missing? If yes, which type and value should be
used?
- Where I can get big high power can multiple capacitors for old
Hammond organ tube pre-amp and amplifier in Hammond box HR40? I know
suppliers for Hammond and Leslie components but they seem to have not
combinations of value I need.
Thanks for advice.
Daniel Forro
Message
Re: [vintagesynthrepair] Recapping
2013-04-08 by Alexis V. Rogers
Tantalums were used due to size and lower ESR. You can get low ESR electrolytics these days. The problem with tantalums is that they close (short) when they fail. When used in a power supply situation, I've seen tantalums burst into flame and end up looking like burnt marshmallows.
I've never added capacitors to the IC power lines unless I was replacing with a different IC whose datasheet called for it.
On Mon, Apr 8, 2013 at 7:45 AM, Daniel Forró <dan.for@...> wrote: