I had a new power cable made up abs when connected to the camera all if the indicator lights were flashing on and off. It’s possible that the DIN connector was wrongly wired or maybe even set with the 12V power reversed. I connected it to an old SBIG power supply and now the fans run very loudly and the FW7 rotates continuously at an alarming speed. It sounds like some DC -DC converters maybe be blown so we have an over voltage situation. Any thoughts Is it possible to get circuit diagrams for trouble shooting? Many thanks in advance
Those are not symptoms I would expect from a voltage reversal. As long as you didn't have a USB cable connected to a computer with a common ground, nothing would happen. There is an input protection diode. If you did have a USB cable connected to a computer with a common ground, the USB interface at both ends would go up in smoke - 12V shorted directly to ground will do that. The reported symptoms don't make a lot of sense to me. The FW7 uses a stepper motor so it shouldn't even be possible to run at higher speed. The fan power doesn't go through a converter. If you connected a higher voltage to the camera then the fans would run faster... unless they burned out. But they would not continue doing that with a properly working SBIG power supply connected. I recommend sending in the camera, filter wheel, and SBIG power supply for service. If you wish to do so, please fill in this form: https://diffractionlimited.com/request-rma/
Hi Doug Thanks for your expert advice. I’ll test the camera alone to see if we have a working system. I’ll then checkout the filter wheel and then look at returning the kit if it is faulty. Thanks Ken
