Yes, there is a good chance that your tv has issues with the ballast. When this happen the ballast will not send the voltage needed for the new lamp, since it might still think there is an old lamp even though if we already reset timer to 0's ballast might still send voltage for an old lamp.
I couldn't found the ballast from our sponsor's but I found it with a vendor in Europe:http://www.chsinteractive.co.uk/electri ... 00027a.htm
which according to them it uses a part # BP47-00027A
which samsungparts.com do not list it under their compatibility list for this part #:http://www.samsungparts.com/Products/Pa ... 0027A.aspx
But for your information ballast's are not very different from one to another, Samsung ballast's use the same lamp connector, cable length will be different the one on samsungparts.com is a 130mm and 120W....
just confirm that your ballast says the same, you will find a sticker with a number like EUC 120 DP31....