Whirlwind Fan Blower Tech

wxforecaster

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After doing extensive repairs on a project WW, all work has been completed except the fan blower no longer works (in test or game play). All other aspects of the game function correctly. I suspect the problem is on the triac board, but am having some trouble with the voltage readings on the board (complicated by having both DC and AC inputs/outputs there).

Rather than potentially fry myself (doubtful) or parts, could anyone lend a hand as to what leads should be placed where and what I should be seeing if I leave on #24 (blower) in the coil test mode?

Thanks in advance,
Evan
 
You should read ~24AC on that rail to the fan motor.
Triac board - most likely the issue.
Check all triac fuse holders, reflow solder on headers and if that all checks out ok then I "guess" replace the 6 legged triac chip.
 
Disregard. The fan is working fine after reseating all the connectors on the triac. I didn't notice any bad traces and the board looks pretty pristine considering the remainder of the game. Oddly, I am only getting ~18V AC to the fan which I thought was unusually low (assuming I'm measuring it correctly), but after hooking it back up, it appears to be functioning correctly with strong velocity coming out of the fan.
 
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