Y:U know condensation prediction from psychrometrics chart?
L:Yap...
Y:Give u a scenario, a room with an aircond direct above the tv, how do we check if condensation will occur?
L:Measure the air DB and WB temperature from the blower using sling thermo, measure the same thing ard the tv and oso four corners of the room...take average....Plot on the chart...
Y:U got the chart?
L:Yap..
Y: say the room design temp is 72F and 50%RH...
L:Then the dewpoint is abt 53F *plotting from the chart*
Y: Wait, I got two charts.....both showing different value...u using which brand?
L: I using carrier one....ignore it bah....we assume now (I tawt all the charts are the same-brand or no brand)
Y: so regret....see lar...last time din learn it properly in Uni and from my boss...now only know is important
L: yah....psychro chart very useful in problem solving
Y: ok so wat...53F
L: Any object in this space with a temp of less than 53F will cool the moisture below it's saturation temp and condensation will occur...is just like u put a ice water in a room..without air cond...u get droplets...on the cup...cus the air temp surround the cup is cooler.....ur tv got heat...so should not be any problem...jus need to make sure ur off coil temp. is above 53F when the tv no turn on..then guarantee no conden n since the unit above...check the temperature of the diffuser....not more than 12C..later condense on the fins...then drop water on tv...bomb...jialat....then blah blah blah

Y: I getting confused, not sure whether is abover 53F or below....53F is abt 12C ...so low...not possible leh....my colic oso kanna blur blur by mi liaw...
L: erm let us go through again....

blah blah blah.....tok tok tok... explain explain...for few minutes....
L: correctlah..u confuse mi....is below not above...as long as ur leaving temperature from the blower is not less than 12C, sure when the temp of the cool air reached the tv is more 12C.
Y: ok ok...i later go study again...call u if got any question..

Sometimes, it only takes a sentence from another fella to turn something which is what we believe is right in the beginning into a wrong one. The chances of the original gut feeling is right are normally high.....This theory, I believe applies to many many zillion godzillion things in our daily lives.