Bottlehead Forum

Bottlehead Kits => Crack => Topic started by: Jimb0 on June 18, 2018, 09:53:05 PM

Title: Do large caps need to be discharged before handling them?
Post by: Jimb0 on June 18, 2018, 09:53:05 PM

Hi. Just curious to know if it would be safe to turn over a modded Crack with extra large caps to look at the circuit after using the amp. Do the large caps need to be discharged before touching them? I installed 3 90UF 250V Dayton Caps and 3 Russian Teflon 4.7uF 250V caps and 2 Russian Teflon .056uF 500V caps. Thanks.

Title: Re: Do large caps need to be discharged before handling them?
Post by: Kitchener on June 19, 2018, 03:39:40 AM

I installed some Mundorf caps in my Crack.
A week or so afterwards I did some other mod, and decided to give the joints on the new caps a do-over.

I did not discharge them.

At around 2 am my fiance was awakened by a loud bang and severe swearing.


Everything was fine, the only damage done was to my nerves and my shorts.
After that I made my custom discharge tool from some wire and one of the resistors I'd replaced with a choke earlier.

Title: Re: Do large caps need to be discharged before handling them?
Post by: Paul Birkeland on June 19, 2018, 04:07:23 AM

The coupling caps discharge very quickly, but the power supply caps take a few minutes.