For questions about troubleshooting circuits. Please note that repair questions must involve specific troubleshooting steps and demonstrate a good understanding of the underlying design of the device being repaired.

When asking questions on troubleshooting a circuit try to include a specific circuit and describe the steps you have taken so far to diagnose the problem. Some further information on some of the things that can be problematic with troubleshooting and repair questions can be found in Is asking how to fix a faulty circuit on topic?