There are tons and TONS of forums and sites with lots of great information already out there for you to search your problem and figure out what could be causing your issue. First and foremost I would point you at the guides section of this very website where I have tutorials broken down by each motherboard type. Beyond that, there are lots of good resources:
Officially dedicated to TX products only, there is a wealth of knowledge in their forum archive. This is great for the nitty gritty of RGH work. Alternate points, repair options, resistor values. You're likely to find someone who had the same or similar issue as you searching through the TX forums. Do be cautious posting for help though, they are hardcore about their support of only TX products so if you ask about a non-TX product be prepared for backlash.
An active community even today in 2018 this is a good stop for getting some quick feedback. There's an active modding community that often has updated guides for new dashboard versions and stealth service updates. There are some pretty active and knowledgeable memebers that can provide installation feedback as well.
Legacy software abounds on this website. Emulator downloads, hard to find original Xbox emulator downloads and more.
Downloads for old FreeStyle Dash, new Aurora releases, and DashLaunch updates are found here first pretty often.