Troubleshooting breaker and checked voltage coming into panel and breakers. found that there was an internally tripped tandem breaker and cut off and back on and everything worked with no issues. The problem happened during a storm. Also found that customer was making code and that 1 leg coming into panel had 130v on it when the coffee maker was running. Explained to customer she will need to have oncore out. Also explained that the breakers are outdated and need to be replaced due to age. If we have to come out for same problem we will automatically charge for a troubleshoot, including troubleshooting the meter base.