Originally Posted by michidragon
The 2910 procedure should be identical to the 3910 -- I can send you the pictures, or, pretty soon i can trim them / annotate them / put them up here (if they'll stay up). It's not very difficult.
However: Good news...
The $15 method *DOES WORK*. I replaced a bad HOP-1200R in the second DVD-3910 with a HOP-1120, and tried a HOP-1200S, as well. Both worked.
Total procedure time was fifteen minutes. Simply:
-Remove the unit cover
-Eject the disc tray and turn power off
-Remove the top of the transport box
-Undo the rail securing plate (two screws) at the rear of the laser slide mechanism
-Lift the lock for the ribbon cable to the laser head and remove it from the laser head.
-Lift both rails (tilting them upwards) and slide the laser head (including the white gear rack) off - DO NOT LOSE ANY SPRINGS!
-While holding the white gear rack - DO NOT LOSE THE SPRING! - to the NEW laser head, slide the laser head back on the rails.
-Screw down the rails under the rail securing plate again,
-Plug the ribbon cable back into the laser mechanism and lock it
-Using solder wick, and a 15w soldering iron, desolder the two (or one in the case of HOP-1200W) solder blobs towards the rear right of the laser head (a gentle touch works fine)
-Screw the top of the transport box back on
-Put the cover of the 3910 back on
-Plug in, power on, go.
-DO NOT LOSE ANY SPRINGS!!!! There are three of them: One under each rail under the rail securing plate, and one under the laser head itself, between the laser head and the white gear rack. Just be careful.
-If you have a HOP-1120/1200R/1200S traverse mechanism, you can't use a HOP-1200W laser head. The reason is, there's a little white tab of plastic that gets in the way. (Electrically they're the same. If you're replacing the entire traverse mechanism, it does NOT matter if your old traverse CONTAINED a 1120/1200R/1200S and the new one has a 1200W) - This is purely a physical 'will it fit' issue.
Pictures as soon as I get things more organized.
Note: The traverse mechanism is simply: the rails, the metal frame, the gear motor, and the spindle motor. I don't feel that replacing the entire traverse is neccessary. You can go your own way on this, $115 or $15, but at least its not a choice of $500 to get repaired or $1500 for a new/equivalent unit anymore.
SO: Denon DVD-3910 with 00h00m00s problem FIXED, for $15, in 15 minutes.
... Now, does anyone have a non-working DVD-3930 they're willing to part with?