Laser Rot: I am seeing things?

Archived from groups: alt.video.laserdisc (More info?)

On Fri, 18 Mar 2005 07:12:50 GMT, Michael <salomesdance@earthlink.net> wrote:
>I am new to this news group, so a quick hello to all.

>The other night, I started up my Alien THX CLV disc from the place where I
>stopped it the night before-- I had placed it back in its sleeve and on the
>shelf-- and there were red and blue dots (rot?) flickering across a chapter
>that, I swear, were not there the night before. Was I just too engrossed to
>notice. Can rot appear overnight in the middle of a disc? Am I right in
>identifying it as rot?

1) rot is gradual
2) rot usually starts at the beginning of the disk
3) did ya put a fingerprint on it?

Archived from groups: alt.video.laserdisc (More info?)

Rot can start from either edge, inside or outside. Some LD's are poorly
pressed and can have dots in the middle but they are repeatable and never
change.

Kurtis

"TCS" <The-Central-Scrutinizer@p.o.b.o.x.com> wrote in message
news:slrnd3lqb0.lrl.The-Central-Scrutinizer@linux.client.comcast.net...
> On Fri, 18 Mar 2005 07:12:50 GMT, Michael <salomesdance@earthlink.net>
> wrote:
>>I am new to this news group, so a quick hello to all.
>
>>The other night, I started up my Alien THX CLV disc from the place where I
>>stopped it the night before-- I had placed it back in its sleeve and on
>>the
>>shelf-- and there were red and blue dots (rot?) flickering across a
>>chapter
>>that, I swear, were not there the night before. Was I just too engrossed
>>to
>>notice. Can rot appear overnight in the middle of a disc? Am I right in
>>identifying it as rot?
>
> 1) rot is gradual
> 2) rot usually starts at the beginning of the disk
> 3) did ya put a fingerprint on it?

Archived from groups: alt.video.laserdisc (More info?)

In article <E8WdnafnqoXq0qbfRVn-iw@comcast.com>, Kurtis Bahr
<kbahr@comcast.net> wrote:

>Rot can start from either edge, inside or outside. Some LD's
>are poorly pressed and can have dots in the middle but they are
>repeatable and never change.

And I have one bizarre case where the rot was caused by
contamination.

The Curse Of The Demon. I started seeing a couple of white lines
at a few spots. Later the noise got worse. As time continued
it increased.

When I'd look at the disk I could see black circles - not filled in
black - but like you had just drawn a circle with a pen - and they
slowly grew larger over time. I susupect some drops of
contamination - maybe drops of sweat - before the sides were sealed
together and the fungus|bacteria were just slowly eating things
away.

That film was really good when I saw it in it's first week or so of
release in a theatre. The overall darkness in the theatre and the
size of demon are much more effective in an environment like that.

Now if only had the money for a 50 foot screen :-)


>
>"TCS" <The-Central-Scrutinizer@p.o.b.o.x.com> wrote in message
>news:slrnd3lqb0.lrl.The-Central-Scrutinizer@linux.client.comcast.net...
>> On Fri, 18 Mar 2005 07:12:50 GMT, Michael <salomesdance@earthlink.net>
>> wrote:
>>>I am new to this news group, so a quick hello to all.
>>
>>>The other night, I started up my Alien THX CLV disc from the place where I
>>>stopped it the night before-- I had placed it back in its sleeve and on
>>>the
>>>shelf-- and there were red and blue dots (rot?) flickering across a
>>>chapter
>>>that, I swear, were not there the night before. Was I just too engrossed
>>>to
>>>notice. Can rot appear overnight in the middle of a disc? Am I right in
>>>identifying it as rot?
>>
>> 1) rot is gradual
>> 2) rot usually starts at the beginning of the disk
>> 3) did ya put a fingerprint on it?
>
>


--
Bill Vermillion - bv @ wjv . com

Archived from groups: alt.video.laserdisc (More info?)

Thank you all for the input.

Kurtis, I gather you are saying that "repeatable and never change" means
that the dots will always be there but won't spread?

In regard to rot, is there a particular time window that it will show up?
Meaning over a few years.

Michael


in article E8WdnafnqoXq0qbfRVn-iw@comcast.com, Kurtis Bahr at
kbahr@comcast.net wrote on 3/18/05 2:00 PM:

> Rot can start from either edge, inside or outside. Some LD's are poorly
> pressed and can have dots in the middle but they are repeatable and never
> change.
>
> Kurtis
>
> "TCS" <The-Central-Scrutinizer@p.o.b.o.x.com> wrote in message
> news:slrnd3lqb0.lrl.The-Central-Scrutinizer@linux.client.comcast.net...
>> On Fri, 18 Mar 2005 07:12:50 GMT, Michael <salomesdance@earthlink.net>
>> wrote:
>>> I am new to this news group, so a quick hello to all.
>>
>>> The other night, I started up my Alien THX CLV disc from the place where I
>>> stopped it the night before-- I had placed it back in its sleeve and on
>>> the
>>> shelf-- and there were red and blue dots (rot?) flickering across a
>>> chapter
>>> that, I swear, were not there the night before. Was I just too engrossed
>>> to
>>> notice. Can rot appear overnight in the middle of a disc? Am I right in
>>> identifying it as rot?
>>
>> 1) rot is gradual
>> 2) rot usually starts at the beginning of the disk
>> 3) did ya put a fingerprint on it?
>
>

Archived from groups: alt.video.laserdisc (More info?)

On Sat, 26 Mar 2005 05:52:20 GMT, Michael <salomesdance@earthlink.net> wrote:
>Thank you all for the input.

>Kurtis, I gather you are saying that "repeatable and never change" means
>that the dots will always be there but won't spread?
I dunno what kurtis meant, but IME, rot will only get worse.


>In regard to rot, is there a particular time window that it will show up?
>Meaning over a few years.
I haven't seen any regularity. Seems like if a disk has it then it'll
show up mildly at first, then get worse randomly.

Archived from groups: alt.video.laserdisc (More info?)

"Michael" <salomesdance@earthlink.net> wrote in message
news:BE6A38CB.6B1%salomesdance@earthlink.net...
> Kurtis, I gather you are saying that "repeatable and never change"
> means
> that the dots will always be there but won't spread?

No, he means that it will never show up one time and go away later. Rot
can and does get worse over time.

> In regard to rot, is there a particular time window that it will show
> up?
> Meaning over a few years.

Generally, if a disc is going to rot it will show signs within 2 years
of manufacture. The last laserdisc was produced longer ago than that.

Archived from groups: alt.video.laserdisc (More info?)

On Sat, 26 Mar 2005 15:59:28 GMT, Joshua Zyber <jzyber@SPAMMERS-BITE-ME.mindspring.com> wrote:
>"Michael" <salomesdance@earthlink.net> wrote in message
>news:BE6A38CB.6B1%salomesdance@earthlink.net...
>> Kurtis, I gather you are saying that "repeatable and never change"
>> means
>> that the dots will always be there but won't spread?

>No, he means that it will never show up one time and go away later. Rot
>can and does get worse over time.

>> In regard to rot, is there a particular time window that it will show
>> up?
>> Meaning over a few years.

>Generally, if a disc is going to rot it will show signs within 2 years
>of manufacture. The last laserdisc was produced longer ago than that.


I've got some that are still getting worse. One I bought four years ago was 6
years old at the time and had just slight rot effects; now it's rather bad.
I suspect they degrade quicker if they're in use.