On my jd tv1300 it worked for about 10 hrs of DVD viewing. Now it stops and/or stutters the video image. I sometimes need to stop the dvd and restart it after it freezes. It also gets a snowy or distorted spotty image.
I have seen this problem a few times and is likely to be caused by one of three things:
1) The optical pickup lens has accumulated some dust/dirt/other crap and needs to be cleaned. The best way to clean the lens is with a cue tip. You may be able to do this yourself if you are very careful and can recognize what you are looking for. Lightly dampen the cue tip with WATER and very gently rub it across the surface of the lens a few times, then repeat with the dry end. Do NOT use any cleaning agents on the lens!
2) The spindle motor is not spinning the disc at a constant correct speed and may need replaced.
3) The optical pickup itself is bad and may need replaced.
If cleaning the pickup fails you would need to take the unit to a pro for an estimate.
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I had a problem similar to this and eventually traced it to the wrong mode setting on the DVD drive's transfer mode.
To check the setting, open Device Manager and then double click on the IDE controllers item. Double click on IDE channel (if there's more than one you'll need to check each one) and then select the Advanced Settings tab. On this tab should be up to two devices and each should show under "Current Transfer Mode" soemthing including the word "DMA".
If any device shows "PIO", then this is probably the problem.
If you Google "PIO versus DMA", one of the top results has a really good article on why this happens and how to force Windows to revert to DMA.
The engine stuttering sounds more likely to be an air leak on your brake servo system, weakening the mixture, and this will give you a lumpy tick over.
As for the stop lights, No 1 check its not the fuse.
You need to confirm you are getting a live feed to the brake switch with a 12v test light.
If OK, bridge this connection and recheck your feeds at the stop light bulbs.