Video Asylum

RE: Not a noisy environment............

64.136.26.226

In Reply to: RE: Not a noisy environment............ posted by Cut-Throat on July 18, 2007 at 16:48:29

A longer cable certainly doesn't help but I agree that the length doesn't seem to be the culprit in this case. Separate circuits certainly help to cleanup the power but they don't block everything, you still have junk comming in from the main powerline. Also, noise (EMI/RFI) comes from everywhere not just your powerline. Your TV could even be emitting noise. A refrigerator, switching power amps, an air conditioner, any electric motor or generator, etc. You have narrowed the problem down to the cable so why don't you barrow two 25' cables. One with filters and one without and try them both. If both work then your cable was defective. If only the one with the ferrite cores works then you have a noise problem. If neither work then it's something else although I would find that hard to believe after your experiment.

Follow Ups:

OK, I have an answer to the problem now!......... - Cut-Throat 07:52:26 07/19/07 (1)
After some troubleshooting with an electrical supplier here, they figured out why my 25 foot cable would not work right with my TV.

It turns out that the Cable that I had with my DLP projector is wired differently than the 25 foot cable. I think what he told me is that pin 4 is tied to the shield (ground) and all the other pins are tied to ground individually on my 3 foot cable. On my 25 foot cable the pins are not tied to the shield but just wired one to one. This was a common problem of the Monitor not being able to detect laptop computers in general. They do make an adapter so that cables such as my 25 footer will work. They have ordered me an adapter.

Cut-Throat
- RE: OK, I have an answer to the problem now!......... - MDavis 15:36:21 07/19/07 (0)
  Thanks for the info, that's good to know. I guess the shield is used as the common ground. I never thought of something like that but I should have thought of suggesting to buzz out each cable for differences.

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