Question about Audio Players & Recorders
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Posted on Jan 02, 2017
This unit has detected a problem in the output section and the protection circuit is preventing the output relay from turning on. In most cases this is due to shorted output transistors which will need to be replaced. If you have a multimeter, set it to read DC volts and measure the voltage on the three legs of one of the output transistors. You should read .6V, 40V or so and 0.0. I suspect that you will read 40V on two fo the three legs. If so, that is your problem. Please note that the actual reading for the higher voltage may be something other than 40. I don't have the service manual for this model, so I don't know the exact voltage. It will be anywhere from 35V-75V depending upon the actual design and output transistors.
I am not aware of the availability of schematics for this unit, but any shop that works on audio gear should be able to repair this without them.
Posted on Mar 09, 2009
most of infocus parts are oem and made by a company in taiwan that no longer makes power supplies, and many of the parts have their stock numbers and not neccesarily a common stock. the power supply, however, is in stock at infocus for about $65.
Posted on Jul 17, 2009
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