Just purchased the SMP-N200 at Target (after noticing it's sold there for the same price as on Amazon and SonyStore)..am having trouble with it. Won't be using as a streaming device for online content (at least not right now), due to my low data cap and slow internet connection..it will be a video player for my attached mkv library (720p and 1080p)..the audio is connected from the Sony SMP-N200 to a Pioneer VSX-921K with red/white audio cable. Video is connected via HDMI (with DVI adapter) to Acer 20" monitor and/or composite cables to older Sony tv (for setup purposes).
The story is a bit long, but maybe it will shed some light on issues and resolutions..
(sorry for this, i understand if you TL;DR me)
Initially, had to connect the Sony SMP-N200 directly to my older Sony tv via composite cables (red/white/yellow) in the front panel, in order to perform setup and download/install firmware upgrade (the SMP-N200 located and connected to wifi modem/router with no issues).
I have several external USB drives (USB 2.0 & 3.0) connected via powered USB hub to an older Acer AMD laptop..which can play videos decently, using VLC, PowerDVD or ArcSoft..however, because the laptop is older, the shared CPU/GPU bogs down quickly and I need an alternate solution. Along comes the Sony SMP-N200..had seen it on sale or refurb several times over the last year or two, but ignored it b/c of the bad reviews..then I saw it again at the Sony Store and on Amazon..after reading some of the reviews, I thought it would be good to pull the trigger..
Once setup, I connected a Seagate USB 3.0 drive into the Sony SMP-N200..device not recognized..oh well..Sony SMP-N200 menu showed USB logo with line through it..(almost forgot to mention the whole time I'd been using the Sony remote and although the menu options are a little clunky, I was able to decipher the layout.)
Then connected a Rosewill external USB 3.0 enclosure to the SMP-N200..it recognized the device and added it. It also saw the directories clearly, but no files..so i disconnected and tried a different USB 2 drive..that one connected just fine and the Sony SMP-N200 saw all the video files too. I figured maybe the Rosewill USB 3 might work after all..so..
When I reconnected the Rosewill USB 3 drive, the Sony saw the directories and files just fine..very strange, but good to know. I started watching Notorious (720p) and it was amazing! No stutters, no lag..just amazing. Well, I had to keep going..stopped the movie, disconnected the drive and added some ethernet..
I followed some advice and installed Serviio media streaming server on the laptop, since it was supposed to stream vids via ethernet instead of USB (i have TB's of files on several external drives --too many to fit on one drive)..well, the install went great and after manually adding drive folders in the Serviio console, I connecting laptop and sony smp-n200 to an ethernet hub. The SMP-N200 saw the Serviio as a device (wow!) and i figured i could now play 1080p files, not just 720p..the Serviio software takes a few mins to find all the videos and add them..at first I thought it wasn't working, but it works just fine (if you have patience!)..i played the first minute or two of the original Casino Royale (1967) mkv in 1080p, but noticed the display was set to 720p instead of 1080p..
Well, the Sony SMP-N200 video settings offer HDMI, Component and RCA..I chose HDMI..the sub-menu offers AUTO or manual settings from 480i all the way up to 1080p..for some reason, AUTO would at first display 480i even when watching a 720p movie..so i manually set the video for 720p, which worked fine in the first scenario.
Since I now had the Serviio working and access to 1080p files, I decided to modify the settings..BIG MISTAKE..as soon as I chose 1080p in the HDMI manual settings, the monitor screen went black and there was a floating box that said INPUT NOT SUPPORTED..I tried manual reset of the Sony SMP-N200 via the reset button on the bottom, to no avail..
Removing the ethernet and connecting the USB had no effect..disconnecting all cables and leaving the set off for several minutes didn't work either..the video setting prevents me from seeing anything but a black screen nor can I access any menu items

I don't have a set of Component (red/blue/green) cables to fix this and my tv doesn't take red/blue/green anyway..i fear I will have to exchange it and try again, but must remember NOT to choose 1080p..what a pain in the neck! Should I get some component cables to see if that helps?
You'd think Sony's firmware would have simply showed "invalid selection" and allowed me to choose another option, rather than locking the whole box.
Perhaps there's another solution? Before I go wasting more time and gas out there..
Any help is much appreciated..thanks!
-=K=-
ps: this thing gets HOT underneath..best to keep it vertical to dissipate heat..