Need a little help troubleshooting a tv
in [Repair]
|
Prev: World most advanced SPAM
Next: Sound Technology ST-1700B distortion analyzer measurement pegs meter on low range.
From: Mac Cool on 19 Jun 2010 17:38 I bought a used Sanyo DS27930 television for a 2nd tv and there are faint whitish lines running through the screen when I watch [digital] satellite through the coax, also a steady hum. It doesn't happen on component or composite. The picture on coax also isn't as good as the other two. I never noticed the problem on my old 20" TV. I've had one person suggest it was a bad tuner, while another suggested it's a ground loop. I'm not sure how to fix a ground loop problem on a satellite coax but I suspect that would be the easiest to try first. Rick
From: bill on 21 Jun 2010 09:35
For the HUM: If u have non-polarized AC plugs on any of the pieces, try reversing them. If u have more than 2 pieces it could get confusing. If all are polarized plug them all into the same power strip or verify the house wiring is correct RE grounds and neutrals. Are the whitish lines single traces or bands? Are they horiz or vert? Are they moving or stationary on the screen? Horiz Bands could be cause by the same thing as the hum. Single moving traces (or multiple ones together-but not a band) could be electrical arcing from a nearby motor or other device. Vertical lines could be a defect internal to the TV. On 19 Jun 2010 21:38:46 GMT, Mac Cool <Mac(a)2cool.com> wrote: >I bought a used Sanyo DS27930 television for a 2nd tv and there are faint >whitish lines running through the screen when I watch [digital] satellite >through the coax, also a steady hum. It doesn't happen on component or >composite. The picture on coax also isn't as good as the other two. I >never noticed the problem on my old 20" TV. > >I've had one person suggest it was a bad tuner, while another suggested >it's a ground loop. I'm not sure how to fix a ground loop problem on a >satellite coax but I suspect that would be the easiest to try first. > >Rick |