: Working on a TV can be difficult and
due to the
circuits inside. Always remember to unplug any TV before trying to service it and if unsure of the proper procedures, seek the service of a trained professional.
I'm sorry to hear that your television will not display an image and I would like to assist you. The issue that you have described appears to be a failure of the high voltage transformer turning on. This is not a circuit that you will want to work on due to the very high current that it carries, and I do not have access to the service manual for this model. The other issue is the availability of parts, complete boards will be difficult to find, if even available. I suggest contacting a local television repair service or following this link:
Sears Home Services
to arrange a repair with a Sears Television Technician.
Please let me know if you would like any further assistance.