Sylvania tripler

[Keefla]

its me again, more questions on the sylvania. its would seem that my tripler has developed a problem with arching. over the past few days is been hissing occasionally (its been very humid), and today I went to turn the set on and its started popping (like an arc) 3 times within 3 seconds and i shut it right off. it did this before a while back and it seemed the tripler was replaced with an nec unit, however i dont think it was a new unit. ill post pix of it here in a sec, but my question is do you think it in infact the tripler? if so where can i get a new (not used) unit for this? price is not a concern really. its been working perfect since the last repair you all helped me with (vid detector ic), this has put it out of commission again thow and id like to get it back in action. thanks guys.