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Bottlehead Kits => Eros Phono => Topic started by: najo49 on August 22, 2013, 06:11:16 AM

Title: Help,blew the 10uf tantalum
Post by: najo49 on August 22, 2013, 06:11:16 AM

I got Thur the resistance check ,when I  put power to the eros I blew the 10uf tantalum. I ordered more but I am fear that this was a bad thing to do. What could this involve? And what could have gone down with tantalums?

Title: Re: Help,blew the 10uf tantalum
Post by: 2wo on August 22, 2013, 12:31:34 PM

double check that  you have the polarity correct,  tantalum's do not respond well to reveres voltage...John   

Title: Re: Help,blew the 10uf tantalum
Post by: Paul Joppa on August 22, 2013, 01:21:41 PM

The tantalums are there to prevent instability and oscillation in the regulator chip. It's unlikely that you have damaged anything else, and if you did it should be easy to figure out what and replace it - there's nothing expensive in that circuit.

Title: Re: Help,blew the 10uf tantalum
Post by: najo49 on August 22, 2013, 02:48:56 PM

Thanks Jon,and Paul. I really hoped I would escape without this kind of bone headed mistake. Eileen sent me out some today,so it sounds like it this is not the end of the world. Jann O.

Title: Re: Help,blew the 10uf tantalum
Post by: earwaxxer on August 22, 2013, 05:30:20 PM

Jaan - just a suggestion... Next time, embellish a bit more... you know, how it singed off your eye brows. Made you see god... That generates a lot more interest from the peanut gallery... Just a thought.

Title: Re: Help,blew the 10uf tantalum
Post by: 2wo on August 22, 2013, 06:14:14 PM

I don't know, every time I embellish...OK, Lie.

All it gets me, is scorn and harassment ;)...John 

Title: Re: Help,blew the 10uf tantalum
Post by: najo49 on August 23, 2013, 06:14:29 AM

I will mention that the two Tantalums are now imbeded in my ceiling above my work area.Still red hot.

Title: Re: Help,blew the 10uf tantalum
Post by: pvannest on August 23, 2013, 06:18:47 AM

Now that would be a sight...  Hanging tantalums.

Title: Re: Help,blew the 10uf tantalum
Post by: Grainger49 on August 23, 2013, 11:50:54 AM

(https://forum.bottlehead.com/proxy.php?request=http%3A%2F%2Fi244.photobucket.com%2Falbums%2Fgg7%2FGrainger49%2FSmiles%2FWorthless.gif&hash=9d8ef4862e40664ab4eb2d68fd061c40652dbcd2)

Title: Re: Help,blew the 10uf tantalum
Post by: najo49 on August 25, 2013, 10:35:00 AM

Paul, Can I go ahead with voltage checks w/o the tantalum caps in place?

Title: Re: Help,blew the 10uf tantalum
Post by: Paul Joppa on August 25, 2013, 04:39:35 PM

I would not.