Question about Audio & Video Receivers
Sansui 8700 db Receiver in safe mode all else lights up no sound from speakers. All fuses are good. What is the problem?
SOURCE: No Sound in DTV/CBL mode
Ok... I'm still new to the HDMI input. But I'm going to take a shot in the dark on this one.
Please don't rate me poorly for this, by the way. I'd rather you don't rate me at all as I am not proposing a solution.
This is a guess. I'll be honest about that. So here goes... :P
I read through the manual a bit. (Click HERE for the manual.) I started thinking to myself about your situation...and noticed that you seem to be focused primarily on the receiver itself.
What about the Satellite receiver? Have you checked it to see if you might have to manually switch the audio output to your HDMI output? I know you have video and all, but many devices won't assume that you're switching BOTH the video AND the audio outputs. Sometimes you have to manually switch one or the other, depending on how you're connected.
I would check the SAT receiver to see if you have to switch the audio output to go out from the HDMI output on the SAT receiver.
It has always been my experience that when the speaker icons flash on the audio receiver and you're sending a digital signal to it, the receiver is in fact NOT receiving a signal...
...which obviously means that one is not being sent to it.
Please let me know what you come up with. Again, this was just a shot in the dark. But I am curious either way. :)
Let me know!
Posted on Nov 10, 2007
I cannot seem to find any useful information for so I'll just say this from personal experiences repairing amps/receivers. Unfortuneatley there is no good news for you.
The only reason a fuse would keep blowing is if a upstream component is bad or there is a short to ground on the circuit card. If g5500 is a tube set you may get lucky as tubes either open circuit or short circuit. My suggestion, if tube, would be to power up the unit after taking the cover off and notice if there are any tubes that light up at all, will be a quick look and a number of fuses.
BUT FIRST. BEFORE YOU TAKE THE COVER OFF ANY UNIT, UNPLUG FROM WALL AND LET IT SIT FOR 2 HOURS. This gives the unit time to discharge the large capacitors in the power supply. After you wait, then take cover off being very carefull. Notice where there are capacitors (look like miniature coke cans) or any other component, you really want to avoid touching anything, And talking about touchingif you touch a tube wash your hand real well or preferably wear gloves. The oil from our skin will cause the tube to bust because of the interaction.
Another thing you can do is follow the above procedure to remove the cover but don't turn on the power.Carefully remove all the tubes. The unit might "power on" but can't be used. This would indicate one of the tubes is bad. If it does shut-down immediately, shop time.
Pure new-age component only amps/receivers are a lot harder to diagnose as there is solder work involved to test the individual part. So this need to be done in a shop as well.
I would love to help but can't, I can only guide you a bit.
Posted on Jan 27, 2008
If the only thing not working is the optical input, it is possible that the optical converter is defective. Without seeing the actual unit and testing the IC, I can't say for sure. If you have test equipment, let me know and we will attempt to track this down.
Posted on Mar 03, 2009
The problem seems to be the left transistor part of the unit. Try this:change A versus B speakers, asuming speaker A was working properly. If still speaker A, now connected to left output does not work, you will probably have transistor malfunction on the left channel of the receiver. Any electronic store will substitute the left transistors.
Posted on Jul 27, 2010
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