Conference clt::laserdisc

Discs should be stored vertically, in jackets that have had the shrink-wrap
removed.

It sounds like electrical interference to me.

			Steve

>> there was a group of vertical video noise lines scrolling from the left 
>> to the right across the screen repeatedly.

> It sounds like electrical interference to me.

	Me, too.  

	Try a freeze-frame.  Report back on what happens:

		1) The noise is still present and keeps moving 
		   across the picture.

		2) The noise is still present but is NOT moving
		   across the picture and:

			A) noise is still sparkling randomly

			B) noise is frozen.


		3) The noise goes away.

    re: .0
    
    Also report on the make and model of the player.  It is quite possible
    that there is a problem with the grating adjustment of the player
    itself.  When was the last time the unit was serviced?  A quick
    cleaning of the lens and an alignment check would be in order.
    
    Dan

Model: Panasonic LX-K670EN.  Brought back from Hong Kong in 1991 hasn't been
       serviced since opened.  Has a problem playing CDs reported in earlier
       note.

I checked some more discs last night.  As far as I can see, this problem is
not visable on CAV discs.  Since my player does not have digital effects
I can not still-frame the CLV discs this problem appears on.  After watching
a several discs I was sure that it was a problem with all of my CLV discs and
therefore a problem with my player, however when I put in True Lies (CLV 
letterbox) there was no scrolling lines/noise.  It was completely clean of
those artifacts!  I haven't played all of my discs so I don't exactly know if
TL is the exception or the rule but it is very confusing.  I don't know what 
to think now.

Any ideas?
Brian

PS:  There were some pulsing horizontal lines/noise on my Close Encounters:SE
disc (CLV, most nociable near the end of the disc) are those a problem with 
the disc itself?

PPS:  If I decide to have my disc player serviced, are there any recommendations
for shops around Nashua?  I live in Brighton, MA but work in ZKO.

Thanks again.

RE: -.1
No ideas guys?

OK, how about a reliable place I can get my Panasonic disc player serviced?
So I can rule out a flaky player.  How much should something like
a routine serivce (ie. cleaning and alignment) cost?

anyone?
Brian

then it's probably a hardware issue. EVMS is in ZKO so your not "that" far away
from Salem NH. I use Electronic Repair Specialists on RT38 about 1 mile north of
RT97 on the left hand side. They are fair, they do the warrenty work for
Lechmere and have been around a while. They also do good work.

roger.

> Since my player does not have digital effects I can not still-frame the 
> CLV discs this problem appears on.

	Almost as telling would be to note when the noise passes some
	landmark on the picture and then skip back a bit and see if
	the noise always reaches the same point at the same time.

	If the noise always hits the same part of the picture, stop
	the machine and rotate the disk some (about 45 degrees) relative
	to the motor spindle. Start it up again an look at the same scene
	to see where the noise is.

	If the noise is still in the same place it is more likely to
	be a problem in the disk.  If the noise has moved, it is
	more likely caused in the spindle motor driver.

Just to update:

Thanks for all of the advice.  I moved the player to another tv set.
Why? Because I had just finished the room that I am setting up all
of my home theatre stuff and I bought a 27XBR45 just for that purpose.
I played Video Essentials and some of the movies I had problems with
the previous setup.  Although the horizontal scrolling is not visable,
I am still getting some crosstalk on the movies, even on new ones!
I assume that my player is flaking out.  So today I went looking
for a repair shop that would do "an alignment and cleaning" just to
rule out a misaligned player.  I called the Panasonic service center 
in Westwood MA and they told me that since my player wasn't sold in 
the U.S. and they didn't have a technical manual for it, that they 
wouldn't even touch it.  So it looks like I'm SOL trying to fix
any hardware problems.  And since the vote is still out on DVD and the 
DTS vs. AC3 wars I don't think I should buy another player right now.
I guess I'll have to live with all of this noise.

Really Bummbed,
Brian   :(

Panasonic may not touch it or warrenty it, but any 3rd party outfit that is
verse in LD would love your money. A clean/align should be straight forward.

>>Panasonic may not touch it or warrenty it, but any 3rd party outfit that is
>>verse in LD would love your money. A clean/align should be straight forward.

I called them this morning. The lady that answered the phone (probably not
the technician) said "If we don't have the technical schematics for the
machine we won't attempt to fix it",  "Even for a cleaning and alignment?"
"Yes."  {or words to that effect}

Are you saying that I should call them back and ask for someone else's opinion?
-Brian

    
    You did not mention that in your previous note. ;^}
    
    Did you tell her it was an unusual model? I would play dumb and swing
    by in person. "Geee I didn't know it was not a US model?, can you still
    clean it?" ;^)
    
    roger.
    
    
    

>>You did not mention that in your previous note. ;^}
You are right, I didn't, I apologize.  I reread my last note and
I might have sounded a bit harsh, I didn't indend that.  I was very
frustrated, sorry.

I could try the "stupid" thing, but my past experience shows that
it only works 50% of the time and I fear that even if I could convince
them to take it I might get a call back saying "This is not a model
our technician is familiar with so please pick it up...for $50"  And
then then I'd be in the same situation and $50 lighter.

Argh,
Brian

    
    Good point.
    
    The other option is replace the deck with a used one if it gets any
    worse. I see Pioneer LD/CD decks in the want-ads for $100+. 
    
    Roger.
    

    RE: all
    
    I just checked with my "Laser disk guy" and was told that the correct
    term for this problem is "cross-talk".  Effectively what is happening
    is that the optics are not purpendicular to the disk.  This causes the
    reading of more than one "track" of the disk, hence the distortion.
    
    The same is true when playing the audio CD, only here there are
    portions of two tracks being played at the same time.
    
    Solution:
    	1) Relatively minor adjustment of the optics assembly (there is a
    		specific procedure for this - don't try it on your own.)
    
    	2) Bad optics - In this case, one or more of the receiver diodes
    		has weakened enough to not provide enough signal to be
    		processed.  This is the expensive case where the repair is
    		probably not worth the money.
    
    Dan