[sdiy] Tantalums, lytics

[Samppa Tolvanen]

On Thu, Jun 11, 2009 at 3:41 PM, Ingo Debus<igg.debus at t-online.de> wrote:
>
> Am 11.06.2009 um 13:51 schrieb Samppa Tolvanen:
>
>> Regularly used wet-electrolytics gear doesn't "DIE", it starts to hum:
>> "Time to re-cap"
>
> Not necessarily. I recently had to replace some about 40 years old lytics
> that had gone up in capacitance, some of them had become leaky too. See the
> thread "How do old electrolytics go bad?" in February.
>

What might be the reference? The Breaking News - 40 Years old
wet-electrolytics replaced? You found these -10/+50% caps to be Way
outta Specs? Quickly browsing the thread, it seems like there was no
blown caps involved? No collateral damage?

YES, as thee electrolytic dries Your DMM starts to tell lies about the
capacitance values, but a proper ESR meter will show how resistive the
load has become or just scoping around the rails for ripple.

NO, somehow You can't do these tests on 40 Years old tantalums. ;)

Samppa