Return to the Electronics Forum | Post a Follow-Up

 o
Do Plasmas require different signal strength?

Posted by quandary (My Page) on
Sat, Oct 6, 07 at 0:59

We purchased a Panasonic 50" 720p Plasma HDTV 2 weeks ago. We got an HD receiver from our cable company, but the cable company is unable to activate it -- we can't even get it to recognize the time of day. Thinking there was a problem with the receiver, I hooked the coaxial cable directly from the wall to the TV. During the auto channel scan in setup, only a few channels appear (very snowy) and after the scan is complete, no channels are available.

It seems like a problem with signal strength. That could explain the converter box problem, too. When the cable is plugged into the old 20" Sanyo analog TV, it works fine.

I connected a DVD player to the TV and get both sound and picture, so I don't think the new TV is defective.

Is it likely that a signal strength that is adequate for my old TV wouldn't be for a 50" plasma? I've scheduled the cable company, but they can't come until Oct 15!


Follow-Up Postings:

 o
RE: Do Plasmas require different signal strength?

How are you trying to connect the new unit? Are you using HDMI? Don't use Coaxial cable, it's not HD compatible.

You're not using any sort of cable signal booster, correct? That will cause problems.

Try to hook up your old tv to the new cable box. You won't be able to receive any HD channels but you'll see if the box works.

If the box works with the old TV, it's not the signal.

A week signal can cause problems, but not like you're having. It sounds more like a setting is not correct. Make sure your connected with a HDMI cable. You should have to set your cable receiver to output the proper signal to the monitor. For instance, my cable box required me to press 'info' and 'guide' on the box to bring up a setting menu.

Make sure that the Monitor (TV) is also set to the correct input. New monitors usually have multiple HDMI and other inputs.

Good luck.


 o
RE: Do Plasmas require different signal strength?

Thanks for responding, klaa2. I had no luck going from the wall directly to the TV or from the wall to the TV via the cable box using the cable outlet my old TV was hooked to. I ran it to a cable outlet in another room, and now both the cable box and TV are working. The old TV worked fine in that outlet, but I couldn't get the cable box to even register the time and the TV wouldn't pick up any channels (analog or digital) when I went through the setup scan.

I'm using coaxial cable from the wall to the cable box and HD composite cable from the cable box to the TV. The cable box didn't come with an HDMI cable, but that would eliminate some cords. Should I get one? If I understand you correctly, after hooking up the HDMI cable, I'd need to set the cable box to output the HDMI signal and set the TV to receive the HDMI signal. Then, I'd need to go through the auto channel scan again, right?

I'm not using a cable signal booster, unless the cable company has one installed that I don't know about. Maybe there's a signal booster at the outlet that I'm having problems with and the outlet in the other room (that's working) doesn't have a signal booster.

I'm glad to know that the cable box and TV are both in working order, but it's scary having that cable running into another room. I'm kind of a klutz.

Thanks for your help!


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the Electronics Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.


Learn more about in-text links on this page here