OT Kind of: DVDs and Such

[Sweeney]

Watching a DVD right now and get noise when it displays bright (white in this case) letters (a la overlays like titles and credits).

Wondering if anybody knows what causes it and how to fix it. I do have a 10 year old TV, which may be a part of it.

 

[Shamus Turlough]

If it is a CRT, it sounds like the tube is going bad. White is the hardest color for a CRT tv to display, as white is all three colors (rgb) firing at once. It appears you may have some crosstalk happening due to a deteriorating shield between the back of the tube and the audio circuitry. Please for christs sake DO NOT TRY TO FIX THIS YOURSELF. Cathodes in TV's like that can hold upwards of 40,000 volts for up to a few days.

 

[Wulf2k]

I'd ask if the same thing happens if you view a pure white image.

Does the sound come from the speakers, the monitor, or elsewhere?

 

[Harlequin]

If it is a CRT, it sounds like the tube is going bad. White is the hardest color for a CRT tv to display, as white is all three colors (rgb) firing at once. It appears you may have some crosstalk happening due to a deteriorating shield between the back of the tube and the audio circuitry.

I'm impressed! :bowdown: Someone that grew up with CRTs

@Sweeney: Can you describe what do you mean when you say noise? Noise as in
1) snowing/fuzzy display or
2) noise as in audible zzzz from the speakers
3) noise as in audible crackling sounds that you hear even when you turn the volume off?

Please for christs sake DO NOT TRY TO FIX THIS YOURSELF. Cathodes in TV's like that can hold upwards of 40,000 volts for up to a few days.

Bolding the important part and repeating again:

DO NOT TRY TO FIX THIS YOURSELF

ST is correct, the CRT's capacitors can hold the electrical charge for a very long time, never open up a CRT TV.

 

[aarons6]

yep id bet on it being becuase of an older tv.
i used to have an old tv and when i watched dvds on pure white screen it would lose v-hold.. a new tv doesnt do that.