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Martin Atomic 3000 Fault

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cookiemonster60 View Drop Down
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Joined: 28 August 2012
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Post Options Post Options   Thanks (0) Thanks(0)   Quote cookiemonster60 Quote  Post ReplyReply Direct Link To This Post Posted: 10 October 2012 at 11:06pm
Hi thanks for the help the fuses were duff and its now working.
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johny_mo View Drop Down
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Joined: 10 February 2013
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Post Options Post Options   Thanks (0) Thanks(0)   Quote johny_mo Quote  Post ReplyReply Direct Link To This Post Posted: 10 February 2013 at 5:41pm
Hey, I know this is from 2008. But I just had 1 of my atomics quit working. The "flash" light is just steady when ever it has power and martin says that means the pcb board is bad. But I dont have the funds to replace it. And nothing looks burnt. although r136 doesnt look great it looks like it could be fine. So I cant tell if its bad. Have you had experience with this before?
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Portlandpro View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Portlandpro Quote  Post ReplyReply Direct Link To This Post Posted: 01 October 2017 at 7:03am
I could use that schematic if you still have it. I have an atomic that appears to stop functioning whenever it receives DMX, but still works on standalone mode. 
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simonp1100 View Drop Down
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Post Options Post Options   Thanks (1) Thanks(1)   Quote simonp1100 Quote  Post ReplyReply Direct Link To This Post Posted: 01 October 2017 at 12:22pm
Check you have no problems with connections on the XLR sockets as well as any problems with the pads of the these as well on the PCB board, then check for continuity on each pin of the XLR to R103 & R104 (R103 to pin 2 on XLR & R104 to pin 3 on XLR).

Check R103 & R104 they should be 2.2 Ohms & check D102 & D103 for shorts, if these components are all fine then it maybe IC102 (SN75176B) bus transceiver chip. Clap


Edited by simonp1100 - 01 October 2017 at 12:27pm
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