Just purchased a Toshiba 61H71. I am on my 2nd replacement with the same problem. I understand it also existed with the 61H70 and other models. Most of the time you hear a loud pop, then the set turns off for a few seconds, then comes back on. Contacted Toshiba....phone support said they never heard of it, and after a week, no response via email from them. I then found a web site: http://www.keohi.com/keohihdtv/usefu...owerreset.html that described it perfectly. A local service center finally found it on their section of the Toshiba web site. They were told many models may have this same defect. If anyone has these Toshiba symptoms, listed in the above web site, this may be your problem.