Lost dmx control

usb to dmx (2009 - 2019)

Lost dmx control

Postby Matt » 01 August 2013, 09:02

Hello,

yesterday during a show one of the moving heads got overheated and caused a power breakdown on the circuit with the dmx controlled lights. After removing the moving head and adjusting the dmx cables I still cannot control any light with Sweetlight. Is my interface burned? I use the D512; Sweetlight version 6.333 on windows 7 professionnel. The pc link still turns green when sweetlight is running (however seems to flicker faster all the time?) Universe is found and I can turn dmx on (green) in editor and live.
I have checked dmx channels and cables on the lights. I also tried building a new light show with just one light but still no reaction?
What could be the cause?

Thanks,

Matt
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Re: Lost dmx control

Postby support » 01 August 2013, 12:31

With some luck, only the "dmx driver" chip is burned.
This chip is socket mounted, so it can easily be changed.
The reference is 75176.
The price is less than one euro.
You can find it here: http://uk.farnell.com/texas-instruments ... dp/1103022

We suggest you to open the casing (4 screws), and change this chip.
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Re: Lost dmx control

Postby Pink LD » 01 August 2013, 12:59

Support,
Would a DMX pti-isolator have prevented this failure. I use them myself and I am wondering what you think?
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Re: Lost dmx control

Postby support » 02 August 2013, 10:51

An optical isolator device is supposed to protect the dmx interface from all troubles coming from the dmx line.

Please note that interfaces Remote and Rack embed their own opto-isolator circuitry.
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Re: Lost dmx control

Postby DJ Trenco » 08 August 2013, 03:45

A few years ago, the same thing happened to me.
To prevent this in the future I would buy a booster / splitter.
Normally it amplifies your signal, however it also puts a numer of fuses between yoor different lights.
Should this ever happen again then the rest of your lights just contineus.
You already have a booster / splitter from € 99.00 and it is worth it I think.
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Re: Lost dmx control

Postby beuzz60 » 06 November 2013, 13:07

Bonjour,
Je viens d'acheter un boitier D512 d'occasion (mon 2ème) à un particulier, mais il ne fonctionne pas.
Mêmes symptômes que "Matt" le D512 est reconnu par sweetlight "1 univers trouvé, Led Power Allumée
la led PCLink clignote 2 fois puis s' éteind
Il est impossible d'activer le DMX dans Editor, et le logiciel ne se ferme que lorsque je débranche l'USB du boitier.
J'ai changé le driver DMX par un TEXAS INSTRUMENTS - SN75176AP neuf, mais j'ai toujours le soucis.
Il y a-t-il une diode de protection du DMX avant ce driver ??
La carte électronique est datée de Mars 2009, dites moi s' il vous faut le numéro de série ?
Sinon pourriez vous m'indiquer une station technique en france qui réparerait vos boitiers ?
Salutations
Beuzz Régisseur Son & Lumière
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