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I have repaired my open tray error by messing with the calibration screws inside my disc drive. About 2 months later it started not reading discs again and kept saying open tray. I opened it back up and tried again accept this time i turned the screws both a few full revolutions thinking that i would find where it stops and use that as a start point for calibrating. Open tray persisted and i started reading more online only to find out these screws are very sensitive and shouldnt be over turned. The x box acts the same as before put disc in … reading…. open tray. So my question is would turning those screws a few full revolutions ruin the drive? Can i still repair this without buying new parts? And is it gonna be !$&# to find out the position for these screws now that i moved them so much… also i did not take a reading so where they started at is unknown. Stupid right? Thanks for any help in advance.
Cal, still not quite sure which ones you “adjusted” from your description I go out on a limb here and thing you tried to adjust your pot’s. One of the things with the adjustment is, you need to only adjust the DVD pot for that particular error. You will need a multimeter to hopefully get them back to a somewhat proper value. Set your multimeter to 20K (ohms). Connect it to the two connections points marked on the image. Polarity does not matter to measure the resistance. Your original setting should have been around 3.4k ohms > 4.2k ohms. The reason for adjusting the pot is to reduce the resistance which increases the power of the laser, which should (not always) eliminate the disc errors and “open tray” errors. Using a small screw driver, rotate the pot clockwise a very small amount at a time. To much turning will decrease resistance to much and can burn out the laser. Do not go below 2.8K. Of course you have to keep an I on your meter when adjusting it. From what I have been reading about it, the best value is in the range of 3.0k-3.4k ohms. This is for a Hitachi and Samsung drive. The Lite-on and Ben-Q drives will have pots that look different, but the procedure is the same. The reason why your DVD drive may have failed, could be due to an excessive power to the laser. You may have to replace it if the adjustment does not work. More info about that, on here and here as well as multiple others. Hope this helps, good luck.
How do u adjust the cd pot? I can’t get mine to go above 218 when I have multimeter set to 20k ohms
Update (11/08/2016) you only ruined it if you did something stupid and did not follow the directions
