Hairball Audio kits are sold without support. The Common Build Errors and Troubleshooting Techniques article is the best place to start. After, proceed to the Troubleshooting Guide for your specific product. Many other questions are answered in this knowledge base. If you have a question that is not addressed or need clarification, please submit a question by using the link above.
I will do everything I reasonably can to help you should a build issue arises. However, build problems can be simple to isolate or can be VERY tricky, even for an experienced technician. Please note that I cannot provide basic electronics instruction or troubleshoot your unit over email. If you don’t have some basic electronics troubleshooting knowledge, your best option is to send the unit in for flat rate repair.