Hi,
I'm not an expert, but I do replace drives quiet often. For replacing drives on phat consoles (except hitachi, too many ROM versions) I dump fw from broken drive and flash it to new drive. One thing I make sure to do is update dash on original console before dumping dvd fw, thus to make sure everything is up to date. I noticed a mis-match on your JF log
Code:
Loading firmware file C:\Users\robert\Desktop\360 hack files\Lite-OFW.bin
MD5 hash: d94e86c51771bded5f3655db0599b8ec
Drive key @ n/a C99A98789550590D945AEDB89B491CDB
Firmware Osig: [B][PLDS DG-16D2S 8385][/B]
Firmware is: Stock
Loading firmware file C:\Users\robert\Desktop\360 hack files\LTPlus-0251-v3.0.bin
MD5 hash: d14fe82b96741b7a18e5c1e7adbf0a98
Genuine LT plus v3.0
Drive key @ n/a FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
Firmware Osig: [B][PLDS DG-16D2S 0251][/B]
Firmware is: LT-Plus 3.0
Spoofing Target
DVD Key copied to target
Target is LT - ID strings not copied to Target
I'm not sure if that is causing the issue, but I'm pretty sure there is a mismatch going on there, which could cause issues, I think.
Maybe you could try to move the original PCB in the place of the one in the new drive and see how it works out.
With that said, I doubt it will work now, you have adjusted the pot, so the laser is probably dead anyway now.
When I get a new replacement laser or drive, I NEVER touch the pot, pot adjustments do not FIX issues, pot adjustment will only increase the life of a dying laser, in my experience anyway, it will always fail in a short time.
I suggest you change the PCB from old drive to new drive, then try again with an original disc, see if it works, if not you will likely need a new laser, if you do, buy a new laser, remove static point and install it and do NOT touch pot and see how it works out.
EDIT:
About pot tweaking, simply turning them and hoping for the best will almost always result in a few minutes of working then a completely dead laser.
You're supposed to actually measure the reduction using a multi meter, by the way the left one is for DVD and the right for CD, turning counter clockwise would reduce, clockwise to increase, but since you have adjusted it without a multi meter, you probably fried it already, so buy a new laser or seek a replacement from another drive.