On 21 Mar 2018 at 11:40, K5MYJ wrote: > A lot of the older Heathkit scopes had weak power transformers. The winding > for the CRT HV would open. A lot of the early Heathkit transmitters had weak power transformers, in fact. Ken W7EKB --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus