Samsung DVD-R4000 not recognizing DVD-R discs

SOURCE: DVD recoder not recording

I had this problem with my R120, it first wouldn't record and eventually wouldn't play, just gave either an error message or "wrong disc.' Then, another DVD player I own did the same thing.

What worked? I opened them both up and swabbed the laser lens with alcohol and then the clean end of the cotton swab. Now both work like a charm. I figure that all the dirty rental DVDs lowly drop dust and gunk and over a few months the build-up caused failure.

Just to be safe, I also used canned air to remove from inside the unit, around the circuit board and on the lens.

I'd advise leaving the unit unplugged for a day or more to let any stored energy drain and if you're not familiar with safety procedures, take it to someone who is.

SOURCE: Recording on Samsung VR375

Sony is not a good brand for buying DVD's. One option for you with the sony discs will be to try it in a computer and see whether it reads the disc. Also you can try using formatting using a software program like nero and see whether the samsung can recognize the disc.
Next time buy good quality discs...look up some reviews on the net.

SOURCE: dvd will not record

Hi and welcome to FixYa,

Initially, try to clean the lens using a CD disc cleaner. Additionally, verify that your blanks are either DVD-R or DVD-RW.

Pls post back result(s). Good luck and Thank you for using FixYa.

SOURCE: I have a problem with Samsung DVD HR735.

I have had his problem several times. The fan pulls in dust at a rate of knots. The optics are so sensitive that a speck will cause the proble. What I do when this happens is to get a can of air cleaner and blow out the dust from the optics. Now look, most of you people are savvy. However, here are a few caveats for the uninitiated.

1. Ensure you have unplugged it first before removing the cover and don't touch the power board.
2. Dont hold these air cans upside down or sideways because if you do then you will squirt sub zero degrees liquid 'whatever' onto the lens (very bad).

After unplugging, just undo the 5 screws and take off the lid. The optics section is in the very middle of the dvd transport component (there's a ribbon attached to it). Blow this out with the air can a.k.a 'air duster' (available at most electronics shops or online). Replace the lid and try a dvd that didn't work before. If it fails, redo the job.

Hope this helps,

Batpuppy

SOURCE: Will not read blank media so that I can record.

i have this model and the problem was the speed of disc you need itcant be any faster then 2x. the 4x is to fast for it i guess. I was doing ok with the "memorex DVD-RW reritables 2x ,4.7gb,120min.