# Buildbotics controller not powering up **URL:** \ **Category:** Original/PRO Series (Buildbotics) (Gen 1)\ **Created:** [August 23, 2024, 4:43pm UTC](https://forum.onefinitycnc.com/t/buildbotics-controller-not-powering-up/28343 "2024-08-23T16:43:04Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![ksw9407](https://avatars.discourse-cdn.com/v4/letter/k/e495f1/32.png) [@ksw9407](https://forum.onefinitycnc.com/u/ksw9407)\ **Post date:** [August 23, 2024, 4:43pm UTC](https://forum.onefinitycnc.com/t/buildbotics-controller-not-powering-up/28343/1 "2024-08-23T16:43:04Z")
My controller will not power up. Worked fine yesterday but today it won’t power up. I have tried pugging in different outlet and checked all connections in back of controller. I have looked on line and found the video on cleaning the switch, but my switch is a push button type. Can’t find a video that talks about that or other instructions of what to check/clean the controller. I don’t have any other step to check. Is there a fuse in box? I do have surge protector on machine. Does anyone have any ideas for cleaning the inside of controller? Can you take the push button apart? Any help would be appreciated. ---
**Author:** ![349iq2345](https://avatars.discourse-cdn.com/v4/letter/3/bb73d2/32.png) [@349iq2345](https://forum.onefinitycnc.com/u/349iq2345)\ **Post date:** [August 23, 2024, 5:24pm UTC](https://forum.onefinitycnc.com/t/buildbotics-controller-not-powering-up/28343/2 "2024-08-23T17:24:58Z")
Hey ksw, you could try to see with a multimeter if the Meanwell power supply has its AC input power. If so, you could check if the power supply delivers 36 V DC power. If it has, you could short J18 on the AVR mainboard, the controller should boot then. If so, the pushbutton is broken. - [Location of fuse](https://forum.onefinitycnc.com/t/location-of-the-inline-fuse-in-the-bb-controller-non-elite/7096) - [Check J18](https://forum.onefinitycnc.com/t/just-bit-the-bullet-question-on-controller-power/18756/2) - [Support // Servicing A Faulty Power Switch](https://forum.onefinitycnc.com/t/support-servicing-a-faulty-power-switch/8586) > [@Screen frozen cant click on anything](https://forum.onefinitycnc.com/t/screen-frozen-cant-click-on-anything/27248/9): > > wood dust on the pcb or overheating can make this. The solution would be sufficient dust extraction, enclosing the controller in an [enclosure with a big fan and a HEPA filter](https://forum.onefinitycnc.com/t/pwr-communication-failed-at-reg-0-i2c-read-word-failed-errno-121-remote-i-o-error/18177/17), and replacing the noisy small fan by a 120 mm fan in the top of the case. If the system freezes it is certainly the smaller upper pcb which is the Raspberry Pi. I don’t think it is much ventilated should the environment be hot. > > Should wood dust be the cause, I would use a [ESD-safe](https://en.wikipedia.org/wiki/Electrostatic-sensitive_device) brush to try to clean the pcb. Or you remove the pcbs and use [CRC KONTAKT LS](https://www.kontaktchemie.com/KOC/KOCproductdetail.csp?product=KONTAKT%20LS) to clean them. > > ([CRC Kontakt promo video](https://www.reichelt.de/leiterplattenspuelung-kontakt-ls-500-ml-kontakt-30169-p109992.html?ACTION=413&VIEW=noframe&INLINE=true&ID=%2Fweb%2Fartikel_ws%2FD800%2FCRCFINALKONTAKT.mp4)) > > Also if you had a problem with the SD card, I would not overwrite the old one but buy one of good quality (Sandisk brand). ---
**Author:** ![ChrisM](https://avatars.discourse-cdn.com/v4/letter/c/47e85d/32.png) [@ChrisM](https://forum.onefinitycnc.com/u/ChrisM)\ **Post date:** [August 23, 2024, 6:08pm UTC](https://forum.onefinitycnc.com/t/buildbotics-controller-not-powering-up/28343/3 "2024-08-23T18:08:03Z")
Check the panic button on the box. The other day mine would not start either. Finally figured out I had hit the panic button accidentally moving stuff around the shop when the machine was off. ---
**Author:** ![GreenButterfly](https://avatars.discourse-cdn.com/v4/letter/g/838e76/32.png) [@GreenButterfly](https://forum.onefinitycnc.com/u/GreenButterfly)\ **Post date:** [October 7, 2024, 3:49pm UTC](https://forum.onefinitycnc.com/t/buildbotics-controller-not-powering-up/28343/4 "2024-10-07T15:49:17Z")
I had the same identical issue with the BB. OF support had me open the box and check for a ‘flashing’ green light on the controller power supply. If not flashing controller was shot and a $500 replacement would be required. I now own a new BB controller. However, the off/on rocker switch was replaced with a green button. Currently, when the green button is pushed, nothing happens. Must the box’s power be controlled at the source? How long should these controllers last - my original was 2021? ---
**Author:** ![OnefinityCNC](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/onefinitycnc/32/7_2.png) [@OnefinityCNC](https://forum.onefinitycnc.com/u/OnefinityCNC)\ **Post date:** [October 7, 2024, 3:59pm UTC](https://forum.onefinitycnc.com/t/buildbotics-controller-not-powering-up/28343/5 "2024-10-07T15:59:49Z")
> [@Proper Shutdown on the Onefinity CNC BB controller (original and pro models)](https://forum.onefinitycnc.com/t/proper-shutdown-on-the-onefinity-cnc-bb-controller-original-and-pro-models/11658): > > [[Proper Shutdown on the Onefinity CNC] ](https://www.youtube.com/watch?v=009t275sTNE) If the screen does not shut down after powering down and flipping the power switch: There are times when the controller will stay on after flipping the rocker switch to off or, in the case of the led push button switch, it won’t power off the controller. This is a rare phenomenon but does happen from time to time. This is due to the screens independent power back feeding through the usb touch cable plugged into the back of the controller. T…