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fuse has blown. Check that the current is actually reaching the point at which your mains cable is connected, and if necessary test it with a voltmeter or by using an ordinary electric lamp. Make sure that the meter governing the supply is not of the coin-in-the-slot variety.
If the current is definitely reaching the power-point you must next test your mains cable and its connections, and also any fuse which may be built-in in your own equipment. Fuses may also be found in the transformer (or power-unit), in the base or rear of the projector, or actually within the plug-connector. If your projector is fitted with an inching-knob use it to turn the motor over by hand, but on no account must you touch the motor itself.
When you are positive that the current is reaching your projector but still without any results, look for one of the following : — Motor wiring partly or completely burnt out. Brushes not making proper contact, either through wear or loose springs. Mechanism "seized up," due to lack of lubrication. Faulty motor switch, or switch circuit-wiring. Grit or dirt clogging gearwheels of main drive — try putting the motor in reverse if the projector is so fitted. Motor requires new windings. Check for any smell of burning, and also examine grease-caps of motor bearings.
Projector Running Slow
First check the sound /silent switch, and then see that the voltage is correct. If the pressure is sufficient the trouble may be due to lack of lubrication — examine grease points (if grease is used) of the intermittent movement and motor bearings. Other possible causes may be any of the above, plus poor contact points in the automatic speed-governor, or partial contacts in the wiring. If the projector is fitted with a clutch disengage it and let the motor run for a few minutes.
It the motor slows up every time you switch the lamp on, it is probably because the voltage is too low — check the resistance or transformer tappings.
Projector-speed Varies
Faulty transmission; lack of grease in mechanism or motorbearings; faulty speed governor. After checking the grease
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