# Fart Box Builds

**URL:** <https://lookmumnocomputer.discourse.group/t/fart-box-builds/828>\
**Category:** KOSMO MODULES\
**Created:** [May 7, 2020, 9:02am UTC](https://lookmumnocomputer.discourse.group/t/fart-box-builds/828 "2020-05-07T09:02:18Z")\
**Posts on this page:** 1\
**Showing post:** 277

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**Author:** ![Willi359](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/willi359/32/19681_2.png) [@Willi359](https://lookmumnocomputer.discourse.group/u/Willi359)\
**Post date:** [February 10, 2022, 5:54pm UTC](https://lookmumnocomputer.discourse.group/t/fart-box-builds/828/277 "2022-02-10T17:54:21Z")

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Hello again.

while trying to use the power supply of the fartbox for [my next module (1163 mixer)](https://lookmumnocomputer.discourse.group/t/1163-mini-mixer/1890/2) as described [above](https://lookmumnocomputer.discourse.group/t/fart-box-builds/828/24) I damaged my f-box:

- I forgot to add the ground-cable and when i tried to find the right spot to connect ground on the additionaly added outgoing barrel jack i must have fried something pokeing around.
- the regulator D9 got / was unusualy warm after wards
- the LED in the release button is still working but the osc-leds are not and the box is silent
- I desoldered and replaced C4, C5 and the power-cable (J1). the pcb-contact on the positve leg of C4 got lost, can i connect (brideg) the leg of the cap elsewhere to recover?

potentialy stupid question for the uninitiated beginner: the boxs’ power cable has two contacts (+/- @ J1) but to pass on the power to the next module ground gets added where does it come from and where does it go (to ground)?

 ![20220210_182008](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/3X/6/4/64dffd943900134a053fa51113781c12ee5e9094.jpeg)

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