Question about Yamaha RX-797 Receiver
I have the very same issue. I am the original owner of a RX-730 receiver with a non-functioning display. I am not sure when it went out, but the unit has been sitting on a shelf in my basement for at least 16 years. Ipulled it out, and can't believe how much better the tuner works than a couple of Sony's that I have had in the interim. Therefore I am motivated to get it fully functional again because it's kind of hard to tune without a display!
It doesn't look like a cheap fix though. It will probably need both a display controller board and the display itself. I think that the display is ok, but it has about 50-60 solder joints to the board that would have to be undone. It seems like it will be easier to just solder up a couple of new parts which will cost $$$.
I'm searching for a service manual right now and I'll update the post when I get it figured out.
The display is backlit with an incandescent bulb an easy fix. Two wires from power supply to a white plastic hollow reflector assy, similar to the back of an auto headlight assy. unplug at pwer supply and remove bulb from reflector insert new bulb and your done. Be careful not to damage pc board above reflector it's the controller for the LCD dislplay.
Posted on Nov 18, 2009
Cd snit is right, it's really easy to do just plugs in like a car headlight. i have the same problem with mine. backlight bulb burns out. (no setting to turn display off on this old unit). i replaced the backlight once with a small light bulb from radio shack but it quickly burned out the new one too. i'm pretty sure the the circuit feeding the bulb is hinky & it surges on power up & blows the bulbs. we've just gotton along without the display as we only use the old thing for occasional listening.
Posted on Dec 19, 2009
Have you checked the settings on the receiver? You can turn the display "off" on many Yamaha receivers. If you don't have the manual, post a comment and I will PDF one to you. Hope this helps
Posted on Jul 26, 2009
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Posted on Jan 02, 2017
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