Question about Yamaha RX-770
I am trying to set up my system of various components, JVC TV,AV-2660S, Sony CD player, CDP-CE405, and Aspire Digital DVD player,AD-900 and my Yamaha Receiver RX-770 with a Harmony Remote,670. Most components are working with exception of the TV and DVD player not automatically switching to LD/TV and VCR/TAPE 2 respectively. I can get off the couch if I have to, but in the midst of all this, the display on the Yamaha quit, is this coincidental or is there some specific thing I can do to remedy this? Daryl
There is a bulb inside the backlight on the lcd display.it is 12 volt and alot of manufacturers run it from the +- 15 volt preamp power supply,on the plus rail.when the bulb burns out it can activate the dc speaker protect,or some other 12 or 15 volt circuit..if it is a flourescent display that is a different problem.those run on 5 12 18 and -32 volts.there is also a 6 volt ac filament voltage.you need the schematic.
Posted on Jun 14, 2009
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Posted on Jan 02, 2017
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