My ZV427MG9 plays DVDs fine until about 1 hr 15 minutes into the movie and then freezes up with the image showing last frame.

SOURCE: Freezing

Probably needs either a cleaning or a new laser picup assembly

SOURCE: DVD freezing

I have had the freezing problem on Sony, Insignia, Cyberhome, HP computer DVD drives, etc.
Based upon very numerous incidents (believe me, I mean hundreds) the problem occurs most frequently after about the first hour as the track moves outward from the hub (and velocity per 360 degree turning increases).(Recording is from the hub out, not from the outer edge in towards the hub). An engineer suggested that the increasing velocity creates the greater possibility of the reader "missing" a data fragment which, in turn, "freezes" the image presently in the buffer. It may "recover"
and move data along again but will probably "freeze" again.
The following definitely helps but does not always work:: Keep the track "tight" by recording actual
running time NOT longer than 30% of the maximum capacity
permitted by the selected speed. Example: On a Sony RDR GX7, I record not more than 60 mins actual time at LP speed
which, on this machine, permits a maximum capacity of 180 minutes using LP. Based on literally hundreds of DVD recordings, I can say positively that the above approach HELPS
limit the problem but it DOES NOT totally eliminate it.
I REALLY WOULD LIKE TO HEAR FROM OTHERS, PARTICULARLY PROS, WHO HAVE INFORMATION ON THIS SUBJECT. Even reduced, the problem is irritting.
[email protected]

from my personal MiniDV travel tapes

SOURCE: movie skips and freezes during play

This is a common problem on CD and DVD players.

Altini is correct to a point. You can try taking the top case off, removing the DVD drive and taking the top off of the drive. Then use a q-tip on the laser lense. I use a little squirt of windex on the q-tip. Gently clean the lense even if it doesn't look dirty. Make sure you very gently work the lense up and down through it's travel. This will make sure no dust or dirt is interfering with the lense focusing.
Reassemble and try your movies again. This is a 50 50 proposition. If you still have the same problem, the mechanism has likely gone bad. Time for a new DVD player.

SOURCE: DVD player won't work for Panasonic SC-HT680

la tarjeta de elcctricidad se me quemo y no encuentro respuesto

SOURCE: Shows "Loading" but won't play

You can try cleaning the laser head and drive carriage. Clean the laser head with cotton swabs and small amount of isopropyl alcohol.Rub the swab back and forth across the head of the laser, do not apply to much pressure or you knock the laser out of alignment.Check the carriage, clean the the guide rails and check the belts and gears. All should be cleaned and checked to see if still in functional condition. if all this does not help you with your problem ,then the laser unit has probably weaken through age and can no longer function properly. Hope this helps you with your problem.