Kodak Carousel Slide Projector Chattering Buzzing Noise Fix

If you have a Kodak Carousel projector and it is giving a buzzing noise, especially when the slide button is pressed, here is the fix.

It is generally caused by a faulty diode bridge located on the board next to the transformer. 

The faulty bridge can sometimes cause the fuse to blow but this in the extreme case.  Any way, if one of the diodes fails in the bridge rectifier, then there will be a AC component on the DC power rail.  This will mean that the solenoids will buzz, chatter and will be actuating very weakly.

The bridge rectifier in my Carousel was a B125C 1500.  I used a W04 as a substitute.  The secondary rail is about 24v so it is within the 50v rating of the W04.

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Projector Lamp Explosion

Here are some pics from a projector lamp that exploded.

The owner was a 'expert', never cleaning the filters and constantly reset the lamp hours when the warning came on screen.

As a result powdered glass has been sucked through the unit covering the optics.

The model is a Sony VPL-PX21.

Pictures of a Projector Bulb about to die

This arc lamp has a cracked, cloudy appearance, it is caused by too often switching the lamp on and off too often without letting the unit cool down.  People think that it is important to use the lamp the least amount of hours -true, but this is the other extreme.