A useful guide to identify the cause of the PCR failure and troubleshoot the PCR reactions.
New England Biolabs
Common issues in PCR are mainly associated with reaction conditions, sequence accuracy, and amplification yield and specificity. On this page, learn about their possible causes and our recommendations on how to resolve these issues.
Thermo Fisher Scientific
A checklist of ideas for PCR troubleshooting if you get no amplification, non-specific band amplification or weak amplification of your target.
BiteSize Bio