# Dead Taz 5? **URL:** \ **Category:** LulzBot TAZ\ **Created:** [May 28, 2017, 9:11pm UTC](https://forum.lulzbot.com/t/dead-taz-5/4927 "2017-05-28T21:11:52Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![SpaceGhost](https://avatars.discourse-cdn.com/v4/letter/s/ac8455/32.png) [@SpaceGhost](https://forum.lulzbot.com/u/SpaceGhost)\ **Post date:** [May 28, 2017, 9:11pm UTC](https://forum.lulzbot.com/t/dead-taz-5/4927/1 "2017-05-28T21:11:52Z")
After a failed print I realized the cooling fan was not turning on even though it was supposed to be 100%. While trying to probe some pins on the cables going toward the printer head assembly, something might have gotten shorted and the machine turned off. I also heard a short beep and afterwards it won’t turn on. I checked the power supply and it seems to be working correctly so I opened the control box. There is no apparent damage and the fuse is intact. There is a small LED that is occasionally blinking labeled “R” even though the power is disconnected. Is there a way to determine if the control board is damaged, and if so, how can I get a replacement? ---
**Author:** ![piercet](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.lulzbot.com/piercet/32/12_2.png) [@piercet](https://forum.lulzbot.com/u/piercet)\ **Post date:** [May 28, 2017, 9:17pm UTC](https://forum.lulzbot.com/t/dead-taz-5/4927/2 "2017-05-28T21:17:26Z")
There are 3 fuses. The big 15 amp one is just for the heated bed. The two 1 amp ones on the board that look like grains of rice are the ones you most likely blew. Replace those and if it still won’t power on, replace the board. ---
**Author:** ![SpaceGhost](https://avatars.discourse-cdn.com/v4/letter/s/ac8455/32.png) [@SpaceGhost](https://forum.lulzbot.com/u/SpaceGhost)\ **Post date:** [May 28, 2017, 9:49pm UTC](https://forum.lulzbot.com/t/dead-taz-5/4927/3 "2017-05-28T21:49:54Z")
Thanks, I missed those. It does look like one of them is blown so I will try replacing it first. Now I have to figure out how to actually get it out… ---
**Author:** ![kmanley57](https://avatars.discourse-cdn.com/v4/letter/k/13edae/32.png) [@kmanley57](https://forum.lulzbot.com/u/kmanley57)\ **Post date:** [May 28, 2017, 10:56pm UTC](https://forum.lulzbot.com/t/dead-taz-5/4927/4 "2017-05-28T22:56:57Z")
> [@piercet](#): > > The two 1 amp ones on the board that look like grains of rice are the ones you most likely blew. Actually they are 5 amp fuses. 🙂 ---
**Author:** ![piercet](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.lulzbot.com/piercet/32/12_2.png) [@piercet](https://forum.lulzbot.com/u/piercet)\ **Post date:** [May 29, 2017, 2:21am UTC](https://forum.lulzbot.com/t/dead-taz-5/4927/5 "2017-05-29T02:21:53Z")
> [@kmanley57](#): > > > [@piercet](#): > > > > The two 1 amp ones on the board that look like grains of rice are the ones you most likely blew. > > Actually they are 5 amp fuses. 🙂 Well those ones aren’t anymore. They melted. ---
**Author:** ![SpaceGhost](https://avatars.discourse-cdn.com/v4/letter/s/ac8455/32.png) [@SpaceGhost](https://forum.lulzbot.com/u/SpaceGhost)\ **Post date:** [June 10, 2017, 2:34pm UTC](https://forum.lulzbot.com/t/dead-taz-5/4927/6 "2017-06-10T14:34:27Z")
Ok, I got a new board from UltiMachine and got it installed. It looks its mostly working as I can update the firmware and move the head around using Cura. The LED display is turning an the button knob will beep when I press it down but it won’t display anything. I am still working with tech support to see if I can resolve it but was wondering if anyone here has seen something like this. The best I can tell, everything is plugged in correctly. ---
**Author:** ![piercet](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.lulzbot.com/piercet/32/12_2.png) [@piercet](https://forum.lulzbot.com/u/piercet)\ **Post date:** [June 10, 2017, 6:22pm UTC](https://forum.lulzbot.com/t/dead-taz-5/4927/7 "2017-06-10T18:22:01Z")
The LCD leads are unfortunatly interchangable. it is possible you have them swapped. The OHAI kit documentation kind of shows which cable should be where. [https://ohai.lulzbot.com/project/f10f9900-84aa-4cc9-9637-cd226f0a5d8c/a16b1f2d-5c1f-47fe-a83d-9d68cca5d62c/](https://ohai.lulzbot.com/project/f10f9900-84aa-4cc9-9637-cd226f0a5d8c/a16b1f2d-5c1f-47fe-a83d-9d68cca5d62c/) If its not that, it could be melted too. but a new LCD board is only $40 or so.