Question about GoVideo DV1030 DVD Player/VCR
I have a Go Video model DV1030 VHS/DVD combo unit that I have played only 3 or 4 DVD's on. Then unit is a little over 3 months out of warranty. When you load a DVD; 99% of the time I get the "bad disc" message displayed on the screen. As I have technical background on some electronics; I opened the unit, on my bench, to see what I could observe happening. I can tell that the laser is functioning. When the DVD loads I can see the laser assembly attempt to track on its guide rails to find the starting position. It looks like it finds the start position; but, again, most of the time it states I have a bad disc. I disassembled the unit far enough to remove the DVD sub assembly from the chassis. I reseated all the ribbon connections and re-lubricated the laser assembly guide rails. At first I thought this had resolved the fault; but after testing a few DVD's the problem started happening again. It appears that the movement of the laser assembly is inconsistent when loading a DVD. Sometimes it seeks the start position; and other times it doesn't move at all when a DVD is loaded. It looks like it helps sometimes if I physically move the laser assembly off of home position; forcing it to really have to try and find out where it is. The only other thing I haven't tried is a careful cleaning of the laser lens. As I have had "some very limited success" at getting a movie to play; it doesn't seem that there is a contamination issue on the lens. However; never say never. I will attempt blowing off the lens with compressed air and see if it helps. I'm still leaning towards a logic or other hardware fault as the "root" cause. I am also going to attempt to contact the Go Video people for feed back; but from other message boards I've read I give that about a 0% chance of being any help. Any thoughts or suggestions?
I assume you claned the laser lens.
It may be an alignment problem, or the laser is on the edge of proper specs, or there is an electronics fault in the reading of the laser, or the servo control that is on the edge.
You cannot test the laser by assumption. To know if it is up to proper emission, you need the laser emission tester for DVD and CD lasers.
If you are experienced at aligning CD and DVD players, to check the alignment you will need the factory alignment disks, a 100 mHz digital scope, DVM, and the service manual.
Posted on May 14, 2008
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