Fan won't turn on in a argus 300 projector
Steps :
1) W/the power cord UN-pugged, remove the 6 screws holding the 'metal projector portion' to its lower wood case.
2) If you find loads of old dirt, spider webs, etc present on the underside then vacuum them all off well, _especially_ around the fan motor.
3) Position the 'metal projector portion' on it side, on it's lower wood case, such that you can both see the fan blade _AND_ the bulb (in my case = Sylvania CLS, 300W, 120V) is not touching the wood case.
4) Manually try to spin the fan blade.
5) If the fan blade spins freely and the wires connecting it to the AC power are sound then you might have a bad fan. The orig fan (at least in my 300) was marked as follows
{ The Alliance Mfg. Co, Alliance O (letter 'O' or number '0', not sure), Alliance No. 2261890, winding ohms ~35 ohms, and on 115V the fan draws~ 2.5A AC current once it warms up }
So in this case, w/the AC connector unplugged from power and w/bulb switched OFF, you're looking for a stable 30<->40ohms across the AC cord connector. If you're not seeing that then might try tightening the only wire nut present that goes to the fan and re-CK ohms. Otherwise, unless the other soldered connection looks bad, then you likely need a new fan motor.
6) However, if the fan blade seems bound, resistant to spinning (ie: a flick of your finger should normally yield 5-7 revolutions) then there may be a solvable issue in the area of the rear bearing assy.
To verify ::
6.1) Remove the fans rear bearing cap (you may need an ice pick or small screw driver shoved in sideways to hold the machine screw's Philips head while removing each nut).
6.2) Grasping the exposed shaft, if the fan can now be rotated much easier by twisting the shaft in your fingers then the issue is in the area of the rear bearing assy area. Clean the bearing cup well and add a few drops of 3-in-1 oil to the oil matt in the rear bearing's cup that surrounds the bearing. Clean the shaft area well. And pay attention to a small fibrous washer on the shaft {it's height & it's OD -vs- ID might be a bit more than ~1/16-in } and if you see some fibers ( ? fiberglass ? ) flaying outward toward the rear bearing area (when latter is installed) then try to brush them off. Then add one drop of 3-in-1 oil to the shaft where it mates to the bearing. Then re-install the rear bearing's cup via its pair of machine screws previously removed. If the fan now spins freely then it's very likely you've fixed the problem. Making sure the lamp switch is OFF, and no one (especially children) will be touching the exposed AC connections, you can quickly test by plugging in the 300's AC cord (as the fan is wired to always come ON).
6.3) Otherwise, still NoGo then you're likely back to '5)'s need of a new fan motor.
