Problem when playing after a while.

Hi to all,

When it is playing a DVD (burned at home or from the shop), after a while it begins to show "big square pixels" in the screen, and the image is stopping, similar to reading problem, but the same section of the film can be read well in another time, and other track well read before becomes "difficult". I know sometimes DVDs from video shops are rather scratched, but I burn some using Elaborate Bytes software and they are well read in other players but mine.

I had disassembled the unit and cleaned the lens whith pressured air and lubricated the rods where lense moves. Sometimes it helped.

I think it is a heat problem of some component. The unit is not covered, but its own cover has not any area to dissipate heat properly.

Thanks in advance.