Samsung... • Answered on May 07, 2020
Samsung... • Answered on Nov 20, 2019
Samsung... • Posted on Nov 21, 2013
The built in dvd drive of the Hr-720 is very useful to be able to copy videos from the hdd to dvds. After a few months, my dvd rw refused to format rw disks and gave system error messages.
Managed to fix the problem by doing the following:
Remove the top pvr cover. Then the dvd drive cover is very easy to remove, only 5 screws and it is off.
Cleaned lens with cotton bud + cd cleaner fluid
Sprayed lens assembly traversing rod with wd40
Adjusted dvd potentiometer (circled in red) - turned +540 degrees clockwise = 1.5 turns
The significant tweak here is the pot adjustment. The idea is to reduce the diode resistance to get more current through the dvd laser = more power. I noticed a difference straight away with the first tweaks of 180 deg at a time, the dvd would load more quickly and several formatted successfully. The pot should be set to between 4k-6k ohms, but there is no obvious way of measuring this.
So Im hoping this should be ok now. It is worth trying as the dvd drive in its previous state was useless electronic junk anyway, although the hdd has always been fine.
Samsung... • Answered on Feb 22, 2013
Samsung... • Answered on Oct 31, 2012
Samsung... • Posted on Jan 08, 2012
Samsung... • Posted on Apr 06, 2011
Samsung... • Answered on Mar 11, 2011
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