I lost the power cord to my "vintage fiber optic light" and would really like to use it. I don't know the voltage, so I can't even try to use another cord. Any ideas I what I can do?

Question edited for clarity. It looks like it is made by Gemmy.
Question moved to Gemmy category.

Is it this one?


The problem with Gemmy is that 12 months after a release they cease all support as though it never existed!

Please don't just replace items, "because you might as well and it MIGHT fix it".

There is very little practical help, but a few observations and guesses. Does it really have a battery pack? If so they will likely be rechargeable batteries, or you can add a set of Lithium Energizer. However in my experience they are not battery powered but have a mains adapter and a lead. I can guess the lighting, would guess there is a bulb and a motorised colour wheel and a bunch of fibre optic cables going from the base up the pole to the sign. If the 'bulb' is an LED Module, that will be harder, but an incandescent bulb can be tested with a multimeter.

Or take it to a local model shop, they will know a Gemmy repairer.

https://www.google.com/search?q=Gemmy+5ft+fiber+optic+north+pole+sign

..

Fibre Optic Cable transmit data fast-traveling pluses of light. Another layer of glass, called "cladding" is wrapped around the central fibre and causes light to repeatedly bounce off the walls of the cable rather than leak. Optical fibers are very thin glass or plastic less than 1/10 the thickness of a human hair. Fiber-optic technology is now easily available to businesses in cities and states throughout the country, making Internet access via fiber-optic cables a powerful alternative to satellite.

The crucial difference between copper cable and fiber optics is that copper cable transmits signal in the form of electrical pulses while fiber optics possess signal transmission in the form of light pulses. ... As against fiber optics is formed by single or multiple strands of glass fiber.

You have probably blown a tube. This amp has one 12ax7 and one 12au7 in the vintage preamp. You can try replacing the preamp tubes, but it can be quite dangerous if you don't know what you're doing!

I ezpect there will be less attenuation with the laser Iight going from the smaller fiber to the larger fiber as all the light bundle will impinge within the radius of the larger fiber - on the other hand going the other way some light from the larger fiber to the smaller will be lost. I actually once had to match 9 micron fiber to 62.5 micron and found a company who could stretch the larger fiber down to the 9 micron giving me a light "funnel" which worked fine for the 800 foot distance I had to cover. Because lasers are powerful and the excess gain is high I expect you have a great chance of it working if your distances are not "miles". If you can get a hold of a laser emitter and receiver cable tester that would let you know your losses quickly. Reliable fiber communication with good cable is all about getting enough light thru to carry a signal. Perfection is not necessarily required as in my example.

Hi,
The Fiber optic sloution requires cost of new equipmets ( Coper to Fiber converters) , Fiber cables , Fiber patch cords and labor cost as well.

Check the following.
Power switch on the back of mqchine ON.
Power cord firmly in place at both ends.
If there is a fuse or circuit breaker next to the power in connection, confirm it is good or reset.
All covers properly closed.
All internal units in correct position.

Hope this is of some help.
ed

Either Pulse Code Modulation or Phase Change Memory, depending on the application, for a radio, most likely Pulse Code Modulation

If you don't have any indicators working, you have probably lost your power supply. With no picture and no sound the chances are you have either lost the power supply or blown a fuse. If you remove the cover and look at the circuit board there is a fuse located near the rear of the chassis near where the power cord connects to the chassis. If the fuse is blown, it is advisable to replace your damaged power cord before replacing the fuse. The cord could have a short and this could create a fire. Be very careful when working on any television. Be sure it is unplugged for more than one day to allow the high voltage to decay from the picture tube. Do not touch the picture tube, it still may have some residual voltage and could shock you. If you replace the cord and fuse and still have the same problem, you will probably find that the high voltage transistor is bad and needs to be replaced.

Jerry

It is likely that the optical fiber inside the cable is broken, it is really sensible and gets damaged easily. I'd try changing the cable before even opening the home theater.