Re: [midatlanticretro] Re: what is the modern replacement part for a tant cap 47uf 20% 35v
- If a Tant cap is suspect REPLACE IT, unlike modern electrolytics which normally fail OPEN tants become a DEAD SHORT. In the 90's my buddy worked for Prime image, they used tants because they where the smallest caps available for a given voltage and capacitance, he said when they failed they would burn a hole right through the multilayer PCB rendering it entirely unfixable!If it is in the linear power supply any high quality high temp cap like Panasonic would be good. If it is a switcher get a Low ESR cap, might as well go with a 50 or 63 volt one while you are at it!Matt
Sent from my iPhone
On Sep 7, 2012, at 8:29 AM, "B. Degnan" <billdeg@...> wrote:
> I agree it looks good, but when in question it's time to test.
> Does anyone near you have a capacitance meter? or if you have a scope,
check the ripple? If you were near the Toronto area, I'd say come over and
borrow my meter. I also have an ESR meter, but I can't say how well it
works (it's home made).
I agree with you both, I have not tested this component yet and it does not
look damaged. My evidence is circumstantial.
- --- In email@example.com, Matt Patoray <mspatoray@...> wrote:
>Very good point, I've seen them blow up too.
> If a Tant cap is suspect REPLACE IT, unlike modern electrolytics which normally fail OPEN tants become a DEAD SHORT. In the 90's my