What are the signs an AC control board is failing?
Identify AC control board warning signs like random shutdowns, understand replacement costs ($150–$700), select exact replacements, and safely source boards from China suppliers.
Why Does PCBA Cost More Than PCB?
Understand why PCBA costs exceed PCB: component sourcing, precise assembly (SMT/THT), and rigorous testing (X-ray, functional checks) add labor, materials, and engineering expenses.
