Anyone care to list their experiences with tweaking pots on the DVD laser?
I have done so on a few drives. You know when you get the dirty disc errors or screen freezing? I usually check resistance before and usually end up successful by lowering no more 150 ohms from where I started, depending on the drive. I have had some that needed much more tweaking, such as 350 ohms or more from the starting point but those ones burn up in a few hours.
Could some of you describe the lifespan and reliability of the drives you have tweaked so I can trend success rates? If available please list pre and post resistance readings and what type of multimeter you used to measure it, i.e Fluke, Greenlee, CentTech, etc. And of course the manufacturer and model number of your drive.
i have actually had good success with this. i adjusted that setting on a hitachi drive about 8 months ago, and its still owrking just fine. i had issues with the drive giving dirty disc errors and this solved the problem. unfortunately i dont remember the firmware version, and dont have it available to look at right now, as its with a friend. i actually didnt use a meter to measure the ohms. i know it sounds careless, but as i am very familiar with that sorta of stuff, i adjusted it as i saw fit and never had another problem with it. i can say that the adjustment was very minor. a quarter of a turn from its original spot, maybe. it didnt take much to solve the problem. sorry i cant give you more info.
I did this a couple of weeks ago on a Hitachi a46 running iExtreme 1.4 at the time. I didn't use a multi meter, just turn the Variable Resistor a fraction at a time until it worked.
