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  #16  
Old 21-05-2002, 05:33
surtees surtees is offline
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Quote:
Originally posted by ihaveanosebleed



So you don't think that a CDR Rip of GTA3 that causes non stop
laser noise during the game will wear out a laser any faster than
the DVD original that has hardly any noise at all? Interesting.
all i can say is mate you must have a serious malfunction with your machine,mine runs the same as an original,and iv'e only a usb mod
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  #17  
Old 21-05-2002, 07:44
Justice Justice is offline
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man, some of you guys are just noobs.

how does a laser that doesnt move make noise? it isnt the laser your hearing making noise, its the motor thats turning the cd. the laser inside the console doesnt ever move. i dont see how your laser can be damaged at all no matter what you try to boot. the motor that turns the disc however can be. if its trying to send mass info, such as a dvd, then its going to spin up very fast. but the laser doesnt have anything to do with that.
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  #18  
Old 21-05-2002, 09:58
ihaveanosebleed ihaveanosebleed is offline
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Quote:
Originally posted by Justice
man, some of you guys are just noobs.

how does a laser that doesnt move make noise?
No, the laser CHIP itself does not make any noise. Please
excuse all of us for generalizing! The LASER sled DOES move
across the radius of the CD. This Can be heard, especially
when it resets to the start. How can you call people noobs
and tell us the laser does not move!!??

And the sled's not the only other thing that moves. The
lens that the laser is reflected through moves up and down.
This can also be heard, especially when it hits it's limits
(sometimes the CD surface itself!).

So what do we have for distinctive sounds:
-Lens clicking
-Sled seeking
-motor spinning, can also cause CD slippage, yet another
sound.
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  #19  
Old 21-05-2002, 12:20
Justice Justice is offline
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right so explain to me how this can damage your laser?
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  #20  
Old 22-05-2002, 05:22
ihaveanosebleed ihaveanosebleed is offline
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Quote:
Originally posted by Justice
right so explain to me how this can damage your laser?
I guess you have never heard of lasers wearing out!!
Where have you been??

Again, most of us generalize here, any part of the SLED
including the track wears out we say the laser is
gone bad or worn out. If any part goes, you replace the
whole unit. Laser units are very precise microscopic
devices, it does not take much at all to throw one off.

Lightbulbs don't move and they wear out! Take one and
shake it and flick it on and off and see how long it
lasts! All electronics have a limited lifespan and the
lifespan depends on how much stress (heat,vibration,
voltage fluctuation,current interference,humidity...)

I know using DVD Rips must be bad on my laser, just
how bad is what I'd like to know. Exactly how much
laser life will I loose from playing rips. One hour
of playing my GTA3 Rip could be equal to 20 hours of
normal DVD play. Or Maybe it 200 hours or only 2. I
don't know!!
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  #21  
Old 22-05-2002, 05:34
Justice Justice is offline
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of course they go bad you knurd, he specifically said IT CAN DAMAGE YOUR LASER. the sled and the laser are two separate components. hes talking about going and spending a shitload of money because his laser was damaged and im trying to inform people that it CANNOT damage your LASER. if you mean the sled, say the sled. its guided by a motor that costs around 2 dollars at any radio shack. he said nothing about the laser wearing out. he said it damaged his laser even though his box was only a couple months old. and im saying its BS. so get your facts straight and stick to the topic instead of spending your time trying to flame me. you NOOB.
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  #22  
Old 22-05-2002, 09:39
ihaveanosebleed ihaveanosebleed is offline
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When and where did I flame you? You don't know that a CD lasers moves, you don't know what
a flame is... Who is the NOOB here!!! The laser IC chip and lens are built into the sled
assembly, you need to replace the whole thing if any part breaks, YOU are just being a
difficult kurd, as you put it. This thread is about DVD Rips causing DRIVE Damage and
that's what I'm talking about so get you act together, contribute something useful or
get lost!!

Last edited by ihaveanosebleed; 22-05-2002 at 09:45.
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  #23  
Old 22-05-2002, 22:06
surtees surtees is offline
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Quote:
Originally posted by Justice
of course they go bad you knurd, he specifically said IT CAN DAMAGE YOUR LASER. the sled and the laser are two separate components. hes talking about going and spending a shitload of money because his laser was damaged and im trying to inform people that it CANNOT damage your LASER. if you mean the sled, say the sled. its guided by a motor that costs around 2 dollars at any radio shack. he said nothing about the laser wearing out. he said it damaged his laser even though his box was only a couple months old. and im saying its BS. so get your facts straight and stick to the topic instead of spending your time trying to flame me. you NOOB.
OK...OK no need to blast someone fer nothing,why the name calling? the only thing that can damage your laser is the mod chip,not a rip,after all its data thats stored on a disc,correct??when the chips first came out you had to adjust laser pots etc,how old is your chip? the newer chips does not require any adjustments.there fore quiter running...correct??.like ihaveanosebleed explained to you,just like everything else they are prone to wearing out,much like the psx,they had the same problem with earlier chips.
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  #24  
Old 23-05-2002, 05:09
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PJClark and Arakon come closest to answering the point which has now focussed on laser damage. So here's the full skinny.

The Laser means the Laser Diode, the semiconductor that lases to produce coherent light. This diode is a sandgrain in size reaching 70 deg Centigrade. A very small increase in current (like pushed through by 5v or by over-reducing the resistance using the recalibration pots) will take the temperature through the breakdown barrier so that it lases dark light or weakly lases at the right wavelength. So yes, like a light bulb, the Laser will eventually wear out according to use.

A cheapish DVD-R has about/less than half the reflectivity of a pressed DVD and the laser power required to avoid re-reads is higher on poor media, achieved by re-calibration. A more expensive DVD-R (e.g. Verbatim) has about 60% ideal reflectivity which, with a clean lens, is sufficient to work with the standard laser power, esp. on a v5.

So now we come to the CD/DVD decision. Gamegizmo is talking bollocks - the TOC is irrelevant and relates only to the used portion. You can have less than 650MB on a DVD; what would the PS2 think then? When the disk is inserted, you can here something akin to a mouse squeeking very rapidly. That's the lens moving up and down to focus and side-to-side to locate the groove that it follows to obtain the data. This lens movement is activated by magneto through tiny wires, current and magnets. Then the sled traverses the disk to measure its diameter (there are mini sized CDs).

When focusing, it tries first in red light; if there is reflectivity, the disk is a DVD/DVD-R and it can boot; if it is not a PS2 disk, the red screen appears.

If there is no reflectivity, it tries infra-red light and if there is then reflectivity, the disk is a CD/CD-R. if it is not a PS2 disk, the red screen appears.

If there is still no reflectivity, it goes to the broiwser. Either the lens is dirty or the laser cannot muster enough power and needs recalibration and eventual replacement.

There is an outside chance that the laser needs adjusting for the lens being parallel to the disk (azimuth) or the sled being parallel )the white cog).

So, who's up for a challenge on this lot?
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  #25  
Old 23-05-2002, 05:20
The_Real_TEK The_Real_TEK is offline
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LMAO
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  #26  
Old 23-05-2002, 05:27
Justice Justice is offline
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Wow!

very nicely put

*waves white flag*
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  #27  
Old 23-05-2002, 11:57
Mr Slippy Mr Slippy is offline
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Thanks for the information, this answers my later question. You know your stuff, cheers!
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  #28  
Old 23-05-2002, 13:20
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God i just love it when Charlie gets technical lol
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  #29  
Old 23-05-2002, 14:40
JT Productions JT Productions is offline
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damn elkayps2, always there wit the info I need. I'm stayin the hell away from dvd rips now, it may be pricey but im stickin wit dvd games to dvd-r's..thanks guy
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  #30  
Old 23-05-2002, 15:39
elkayps2 elkayps2 is offline
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JT, respect man ...

I have just realised that My RMOD has the very fast eject speed problem, I think that this might be the reason for the dvd-drive damage.

it makes a hell of a thud, and i know that this issue has been fixed on the new model PNP key, ect

any thoughts???
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