Just an update to the above for anyone want to know about getting the tv connection to work:
bought the desktop dock from ebay/amazon (OEM) about 25 bucks & a cheap min hdmi cable to work.
1 thing to notice though, charging cable to tab plus must be plug in to work or no signal will generate.
Also when running tv shows from plus, streaming Tv will be slower than usual when connected to TV somehow...
When disconnected, streaming is normal, when connected, streaming is slower but will still get to show on TV connection.
Also, when running certain program in portait mode, tv still show landscape even though auto-rotating is enabled (or disable), tried both ways,
so it shows that it only support landscape mode.
not sure on HDTV adapater though...only experienced with desktop dock of galaxy tab 7.0 (this work for my plus 7.0)