Question about LG DR787T DVD Recorder
SOURCE: Permenant "Unknown Disk"
Try cleaning the player with a DVD lens cleaner.
If you're adventurous enough, and the player is out of warranty, you might want to open up the player exposing the lens part. Then, try to eject and close the disk tray and see if the laser diode lits up (avoid staring at the laser light, it will ruin your eyesight! View it from the side not directly into your eye.)
Also check if the spindle spins a little. Or, with the top cover open (this magnetized cover serves to hold the disc firmly as it spins), insert a disc into the tray and close it. See if the spindle spins with the disc.
This problem points most of the time with either a bad laser or misalignment. If misalignment is the case, this could be fixed by carefully turning (very slowly...) a tiny potentiometer located near the laser diode (experiment with the best setting, mark each turn and try any disc with each turn. Be patient)
This fix is not for the faint of heart, and at your own risk. If you're not sure of what you will be doing, leave the servicing to a qualified technician.
Posted on Mar 12, 2008
I have had the same problem a few times. All I do is eject and re-insert the disk until it recognises it, this seemed to work for me
Posted on Jun 05, 2008
FIRST UNPLUG THE UNIT FROM POWER !!!!! The problem is dirt/dust/****/crud/stuff on the tiny, little ***** laser lens. Remove the case screws ( 2 on each side, some in the back) with a correct size driver. The cover must be pulled open at the bottom, side to side a tiny bit ( use a hand on each side) to allow the cover to lift up at the rear, it must come up quite a bit as if it is hinged at the front and THEN pulled back out of the front panel. Set the cover to the side. The DVD reader/Burner is covered with a small black cover, it is held on with two TINY screws, STOP!!!! Get yourself the CORRECT size driver at Fry's or Radio Shack, DO NOT get cheap here!!! Remove the two screws and find the two plastic grip tabs, push them to release and lift the cover. There is the laser! It is a tiny blue lens about the same diameter as the tiny screws. find a very, very well washed CLEAN 100% cotton T-shirt. The softer the better, get 70% or higher rubbing alcohol, pull the fabric over the tip of the finger and wet with the alcohol. VERY GENTLY wipe the lens 4 to 5 wipes and the 3 wipes with a dry spot. That should clean the lens. USE NOTHING ELSE!!!!!! The lens tracks back and forth on two tiny bars. The stuff I use is WD-40 wet on a Q-tip swab. Go to a safe place to spray the WD-40 on the Q-tip. The lube should drip. With the Q-tip apply the lube to the tiny bars at the ponts of rider contacts and wipe the bars too. Put the top of the burner back> BE CAREFUL!! Use a magnet driver and then repower and try to read a known good dvd. You will have to do this more in the future, you understand, dist dirt etc in the air. Put the top back on. Enjoy.
Posted on Sep 26, 2008
When you have had a dvd_rw in your computer; your LG won't except them anymore.In the next steps I'll show you how to solve that problem
first take a new (unused dvd_rw)
Initalize the new dvd_rw in your LG.
write " LG master dvd_rw" on it and put it in a safe place.
when you've a dvd'_rw used in your computer but you want to burn something from your LG on it take next steps
take the master LG and put it in your computer
start Nero or an other burning program
choose disc copy and copy the master to the used dvd_rw.
when done , take the copy and put it in the LG.
this time the LG will exept the copy.
Put the master LG again away
Posted on Aug 27, 2009
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