Today I was called to troubleshoot no power to two bedrooms. The problem was found in the first outlet I opened. The hot connection was lost due to back stabbed devices. We discussed the back stabbing of devices, the fix being to replace all outlets and switches. I also noticed your smoke detectors should be changed every seven years and that the existing ones look past their life expectancy. Thank you for having me into your home today and giving Mr Sparky the opportunity to earn your business. Tom Leonard