Element 1 - DMX I/O Noisy/Failing - Guide or Tips to Self Repair?

Hello, I work in education in the UK and we have an Element 1 board here and one of the two DMX outputs is very noisy or failing. Sadly because of the age of the Element 1 there is no interest in spending any money on actual repair or service. However it would really benefit me and my team to be able to get the second output working again!

So if anyone has any tips on how to go about this would appreciated! I have found ETC guide on opening the Element up just would appreciate if anyone has any advice or perhaps if there is a cheap DMX splitter that would work just as well to let me know! (Not limited by Universe more by physical cabling)

Hope thats enough to go off thank you in advance!

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