Facing TV Problems? Ask a TV Technician.
Welcome! I am an experienced electronics field technician and your satisfaction is my top priority. We are now connected together on this convenient website which saves you time and money vs much higher repair shop diagnostic fees.
To get started, I need to know you are able to reply to me here...
1. Who is your tv channel provider?
2. Do you change channels with the LG tv remote or with the channel provider's remote?
** My replies can take up to 5 minutes to appear **** Do NOT start a new question **
The good news is there is nothing wrong with your tv. This is going to be an issue with the Comcast signal or the box. One quick thing you can try is unplugging the power cord of the comcast box for a few minutes. If that does not help then you need to get comcast tech out to the house and check the signal to this box and/or replace the box (note: performance of other tvs/boxes in the house does not have any bearing on this tv/box).
Remember that I am here to help you. Please reply back if you need clarification on any of the above.
Regardless of what you decide to do next, please take a moment to click the 3 to 5 STARS rating at the top of the page. Keep in mind that I have donated my invaluable time and expertise helping you rather than other customers. My livelihood truly does depend on your positive rating.
Rating now does NOT close the question or prevent us from continuing our conversation here and selecting the "bad/poor" rating does NOT do anything to fix your issue (nor does it issue you a refund).