Disc type X kills drives

Discussion in 'Wii - Hacking' started by thesund0g, Sep 24, 2010.

Sep 24, 2010

Disc type X kills drives by thesund0g at 4:55 AM (1,061 Views / 0 Likes) 5 replies

  1. thesund0g
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    Member thesund0g GBAtemp Fan

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    Does anyone know where the rumors that a particular disc type (+DL, +RW, -R etc.) "kills" the Wii's disc drive over time? Is there any evidence to actually support this?

    I'm inclined to call BS on the whole thing. A laser is a solid state device; unless it's horribly engineered, it shouldn't output at a power level that will actually cause damage to the diode itself within a reasonable operating lifetime (thousands of hours, at least). Now, if a type of disc is hard to read, causing excessive seeking, then yeah...I could see the stepper motor wearing out over time. But unless someone can prove me wrong, I don't believe this. Either a drive can read a disc, maybe barely, or it can't -- either its laser can read a disc with a certain reflectivity, or it can't. Right?

    I've got a couple of 10+ year old discmans that are still going strong, and a couple of PS1s that only needed a drop of lubricant on the stepper motor screw to bring them back to life. Has anyone tried lubricating a dead drive?
     
  2. trumpet-205

    Member trumpet-205 Embrace the darkness within

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    In simpler sense (non-technical), DVD drive shoots out laser. Laser is to hit the disc and reflects back. DVD drive is then to capture this reflection and interpret the data. Thing with rewritable DVDs (-RW, +RW) are that they have special reflective properties involved (in order to make them rewritable). Without going into detail (unless you are really good with Physics and Optics), it means that it is harder for laser to reflect. This reflective properties places a strain on DVD drives that don't support them. Wii's DVD drive is designed to support Wii Optical Disc only (essentially a modified DVD-ROM). As such it does not take into account of this "special reflective properties". So Wii's DVD drive is constantly having difficulties capturing the laser. In the short run, you will barely notice the effect. In the long run, your DVD drive is more likely to be damaged.

    Thing with dual (double) layer disc is improper layer breaks. People burns these discs often forgot (or don't know) when to break the layer. Again this imposes strains on DVD drive in the long run.
     
  3. thesund0g
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    Member thesund0g GBAtemp Fan

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    Thanks, but the receiver is a solid state component, too...it isn't going to wear out if the signal is weak. It's not like it's squinting. [​IMG] The drive controller isn't going to run an excessive amount of current to it just because it can't interpret the signal. That's what I meant by "it can read the disc or it can't." Either it reads fine, with or without ECC, or it doesn't, but it uses the same amount of power and experiences as much wear (negligible) as it would with a legit disc. Obviously it can read most discs, at least until the latest drives -- and those are supposedly a controller command-set issue, not a laser issue.
     
  4. Tagg7

    Member Tagg7 GBAtemp Fan

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    It is a fact that DVD+R discs and DVD-/+RW discs cause more strain to the laser as it makes it work harder because the laser diode is set at a voltage (700mW) that is not ideal for these types of discs. The reflectivity is also a concern with rewritable discs in particular.

    You keep using the term "solid state component". It's not the receiver that is going to wear out, it is the laser that is going to become weaker and weaker.
     
  5. thesund0g
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    A diode, like the one used in the Wii's drive, is a solid state component. The laser itself isn't a mechanical part. Though they differentiate between diode lasers and solid-state lasers, they're both solid-state components in the sense that they're electronic, not mechanical components.

    A laser will become weaker over its lifespan, but no more with one disc type than it would under use with a legit disc.
     
  6. sorgelig

    Member sorgelig GBAtemp Regular

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    Even tough, Wii drive is not designed to read R/RW media, laser circuit still have auto-adjusting of power. It's designed to compensate tollerance of laser diode and its wearing (to prolong drive's life).
    This circuit will rise power to its maximum allowed if drive cannot read media. Although it won't rise power hagher than allowed, it eventually will shorten laser life comparing to normal power.
     

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