Topic: Dvd Drive Grinding Noise (Read 84 times)

solid13138 · « **Reply #15 on:** October 08, 2007, 02:26:00 PM »

OK guys I think I found out what the problem is. I disassembled the DVD drive and kept it's top off and put my PGR4 disc in with the white plastic thing on top. It booted up and I started a a race and during the loading screen the grinding ensued! So I looked at the location of the laser at the time of the grinding and it was on the outermost part of the disc making small movements back and forth. I took out the disc and started looking everywhere inside the drive and just then I noticed on both tracks which the laser unit runs on there was some greasy substance. I cleaned it off and loaded the game again and boom no more grinding! So it looks like that grease was preventing the laser from moving properly when it was at the outer rim of the disc. I hope this finally fixes it and much thanks to all who helped me.

solid13138 · « **Reply #16 on:** October 10, 2007, 07:27:00 AM »

Oh one last thing. I discovered today that the scratch on the disc wasn't from the DVD drive but was there before burning. Apparently the whole batch of DVDs I got was scratched with the same scratch.

TrailPimp UK · « **Reply #17 on:** October 10, 2007, 10:47:00 AM »

Nice one solid, much appreciated, i will look into it and keep you posted through this thread if you dont mind,

Cheers Tp Uk

oh, you on xbox live? add me if you are man, Trailpimp UK

InterestedHacker · « **Reply #18 on:** October 11, 2007, 06:24:00 AM »

Sounds like you need to carry out the llamma mod. Some drive revisions did not have the foam pads at the top of the drive casing. When the disc is spinning / changes spin rate instabilities occur and the disc can flip up or down on one side or the other, this results in partial scratches - normally in the middle of the disc, and you can hear it appearing to 'grind'.

I have solved this problem on a few 360s now. Incidentally, I noticed that cleaning the discs using all known methods seemed to make no difference. I finally found a method that appears to work well - use one of those polishing cloths you get with LCD panels, press fairly firmly and move in circular motions over the 'scratch', most of them just come straight off (I guess they are plastic marks from the DVD laser carriage).

solid13138 · « **Reply #19 on:** October 12, 2007, 01:24:00 PM »

QUOTE(InterestedHacker @ Oct 11 2007, 04:00 PM)

Sounds like you need to carry out the llamma mod. Some drive revisions did not have the foam pads at the top of the drive casing. When the disc is spinning / changes spin rate instabilities occur and the disc can flip up or down on one side or the other, this results in partial scratches - normally in the middle of the disc, and you can hear it appearing to 'grind'.

I have solved this problem on a few 360s now. Incidentally, I noticed that cleaning the discs using all known methods seemed to make no difference. I finally found a method that appears to work well - use one of those polishing cloths you get with LCD panels, press fairly firmly and move in circular motions over the 'scratch', most of them just come straight off (I guess they are plastic marks from the DVD laser carriage).

What is the Llama mod exactly?

Author Topic: Dvd Drive Grinding Noise (Read 84 times)