The CTC177 chassis (as well as various other CTC's) is notorious for problems. Most of them originate from a solder defect in the tuner. It is not wise to work on any CRT televisions without the proper training because of the dangerous voltages involved. If you are skilled in the area of tv repair, there are many sites with informatation on the CTC177 tuner repair. Just go to your favorite search engine and type:
"CTC177 solder connection".
Jerry Coleman
August 2006
howtomendit.com for free repair help, information and advice.
