Fixing DMX light after MPX plug in?

[abkas98]

Hi all! First time poster, any help is much appreciated.

I recently started a new job as the lighting designer/technician in a small venue space. They run their whole grid on two big daisy-chains, and when recently hanging a different plot I accidentally plugged into the multiplex option on the bottom of a dimmer pack instead of the DMX option. I'm sure you see where this is going.
It was pretty early on into the start of the daisy-chain, thank god, but I think I fried 4 lights. I didn't even know killing a dmx chip because of multiplex was a thing that could happen, but after some research I think that's my situation.

My question is: can I replace that part inside the light? And how difficult would that be?
I can't figure out exactly what chip it is or where in the light it lives.
The units are two Chauvet SlimPAR QUAD 12s, and two Chauvet Intimidator Spot LED 150s.

It's a very small venue and these units were donated in the first place, so buying replacements isn't really an option. Any experience anyone has with this would be helpful! Thank you!

 

[FMEng]

Follow the traces from DMX input pins 2 and 3 to the chip they go to. That's the receiver chip. If the manufacturer was smart, it is socketed, otherwise it has to be de-soldered. De-soldering without lifting and breaking traces takes some skill and good tools.

 

[Allan]

Please visit www.chauvetparts.com to order and parts you need. If you can't find the part, just give the Parts team a call and they will help you out.
Note that these fixtures were discontinued 7 years ago, so parts may no longer be available.

 

[n1ist]

Most likely a 75176 or MAX485 chip. Should be easy to find.

 

[Mac Hosehead]

Here is a picture from someone selling a used intimidator circuit board on eBay. If there is a separate DMX receiver chip it would be one of the 8-pin surface-mount. As was mentioned, good soldering skills would be needed to replace the chip.