Horrible issues with this model, Lets start off with the faults:
1. Sound randomly starts to stutter and drops out. Then randomly stutters and comes back in. Sony repaired 3 times each time it came back the same way it was sent off..with random audio drop outs.
2. HD picture quality is ok. SD picture quality is flat our horrible.
3. Blacks are almost grays and where you should see a gradual change in colors such as in a evening sunset there is obvious banding.
4.
prices went down some,
So happy to have bought this., I originally purchased a 32 inch Sony Bravia HDTV, and then I saw this one on sale here... so I purchased it without hesitation. $50 more and I could get a 40 inch! Great TV... can't believe it was so inexpensive. No freeze frames, good color. Very happy.
Sony = terrible customer service, I bought this TV just before Christmas 2009 and it has has not worked properly since day 1. First of all, The HDMI inputs didn't work all the time. Periodically when turning the TV on, there is a picture but no sound, or sound and no picture. Reseating the HDMI cable fixes it temporarily. The TV also pops loudly and reboots itself 3 or 4 times a week. Sony farms out repair to a local company and the local guy said Sony has had problems with direcTV DVR's. He called Sony and they authorized replacing the main board and power supply. This did fix the HDMI problems but not the loud popping and reboooting. Another repair call required replacement of the LCD panel. After waiting another 2 weeks for this, the replacement panel wouldn't even turn on so he had to put the old panel back in. Sony then said they would replace the TV and I'd be called within 3 days. This is when the real trouble started. I got a garbled message requesting I fax my original purchase receipt to a toll number in Florida. I couldn't make out the number and the rep left no call back. The next day, I had another garbled message but managed to get the phone number and some of my "reference number" out of the message. The next day I got a third call saying the information was incomplete - now they want the retailer's name and address even though the first 2 messages didn't ask for that. Again, no call back number was given. Sony's website doesn't list any toll free numbers, either, so I had to pay to talk to them. That's when I found out the Florida number just bouces to a call center in the Phillipines. Eventually, they got the information (that they already had) and called a week later, leaving another toll number for me to call. This time, they offered to sell me the latest Sony TV at a cost of 300 dollars more OR a refurbished TV. Considering I bought a NEW TV and it didn't work from the beginning, I wasn't too happy. Sony only offers new replacement within the first 30 days, even though any intermittent problem will NEVER be resolved within that time, so everybody gets a used one for replacement.
I will never buy another Sony Product, We literally bought four (4) of these pieces of junk starting Super Bowl Sunday, Feb. 7, 2010 through Feb. 28, 2010. Each one had issues within 2-5 days. We took all four (4) back based upon the advice of Sony Technicians, and I tried to call Sony to seek help. I spent a total of 4 1/2 hours over 5 days on the phone, mostly on hold, waiting to talk to a person. I finally was told "that is beyond our control, you need to talk to someone in Customer Relations." FYI, if you try to call Customer Relations at 1-239-768-7547, which by the way is the number that is listed on Sony's web-site, the first thing you will notice is it is a "long distance call." The second thing you will notice is you will be on hold for a minimum of 30 minutes waiting to talk to someone. The third thing you will find is that you aren't calling Sony Customer Relations at all.
You are calling Product Support, who will ask you dozens of the same question, until you have wasted more of your day and money on the long distance call. Only after you get so angry you are ready to spit nails do they say "you need to talk to someone in Sony Customer Relations." Then the fun really begins as Sony Customer Relations is only open on Monday through Friday.
Perfect tv does everything perfectly, I decided to rate this TV after I saw another Sony widescreen model at my friend's and realized how mine is SO much better.
First, if offers plenty of HDMI outlets (for my DirecTV, Roku/Netflix, and Blu-Ray DVD) on both the back and side.
The image quality hardly needed any tweaks out of the box.
The remote (only used when switching outputs) is so ridiculously easy that even my mother can figure it out.
All in all, the best darn TV I've seen and the perfect size for my large living room. You really can't go wrong.
Junk, This is the 2nd Sony I've purchased. I guess I can be criticizd for making a mistake twice, as the other Sony we had went completely out after 3 years. Worked fine for about 13 months, then approximately 1/5th of the screen started going out and it's now just a black band along the right side. Repair man is on the way - again. I won't buy another Sony TV and I can't recommend any Sony.
Pretty good value while it works, I had my KDL40S4100 for a little over 2 years and the LCD panel is going. Thankfully I purchased a warranty from the store instead of SONY(Soounds like they are a nightmare to deal with). I always tried to purchase SONY products because I've had some great luck with them but, this TV only lasting 2 years wasn't so good. I would still use their other products but, am going with Samsung after this. I have a Samsung in my Bedroom that I picked up on the cheap and have been very happy with it. Also, they get great reviews. Sorry to those who only have a SONY warranty. Next time, go with the stores warranty. You may pay a little more but, you know where to go if you get a run-around.
Serious Audio Flaws, The picture of this TV is OK. The audio is really bad. 1. random crackling static 2. tinny speakers 3. rca audio jacks will not work while using hdmi for video only, even though manual says it should work.
DO NOT BUY!! BEWARE!, I bought this tv 15 months ago and I started to have problems with it right after the 12 month. I did not buy extended warranty trusting a name like SONY. I have researched a lot and apparently all the motherboards in this model can and go wrong eventually. My tv just won't turn on out of sudden. Please read for yourself on this problem on other reputable sites. DO NOT BUY it. As far as customer service SONY has lost me FOREVER. I gave it one star because the option of zero stars is not available.

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