I opened up the top of my black doublewide case. Here are the Model# of the two power blocks up there. Going to replace both since one look like it has electrical burn damage and the other just is flat dead. The white looks like there was some moisture at one point causing a issue. So better safe then sorry to replace both. White Ballast block # EBU40-1 (F18t8) Black Power Block # TRLVT-01X2 I found the white power block on several sites for around $13 to 15. No problem there, just choosing a reputable site. Finding the black power block is proving to be harder, all listed in China, none for sale only inquiry. Should I be looking somewhere else I might have overlooked? Any help is appreciated. Thanks for looking fellow members. Enjoy your weekend.