Buying an Onkyo a-rv410 amp. Current owner says that the output seems low after a quick test. Unit has been sitting (dry and safe) for 2 years. Owner states it is similar to when the loudness button would be off - just not as strong.
Something internal, or a button switched on or off?
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Re: onkyo a-rv410 amplifier output problem
Hi pm, Hard to make an assertion without firing it up yourself. It may be that be has faulty speakers, speakers out of phase, faulty earthing of line out from the source he tested it with. Good chance that it is ok. Take advantage of his concerns, and buy it extra cheap. Good luck
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First of all, did you test the primary and secondary leads for resistance? They all should be from 2-30 ohms max. If they are, the transformer is fine. If they are open, you will need a service manual which may be on-line. If you need more assistance or would like to inquire about repairing your unit, please visit my website at audoserviceclinic.com. Thank you.
It is possible
that the amplifier had encountered a fault with a higher current drain which
had triggered it to a protection fault condition. The fault can be with your
output drivers. Please check for short on the outputs fitted for both the channels.
Use a meter after disconnecting to check for short in the drivers. Disconnect
the positive and negative voltages to the output and see if the protect
changes. Even a fault in the preamp stages that drives in high current into the
output can shut the Amplifier. Sometimes this can be a noise which can be a HUM
or HISS before the protect works. Faulty capacitors in these circuits also can
cause similar issues and needs close observation.You need to confirm and
replace the specific stages or outputs. If not there can be issues in the
mother board. Maybe the protect circuit by itself is shutting off due to a
faulty bias or there is a leak in any voltage/current sensing circuit. Also
disconnect the speakers and test, if the amplifier comes out of the protect
mode then check for short on the speakers.
Do you mean you want to connect 2 pairs of speakers, or just 2 speakers like you say in your question? There are 4 pairs of screws on the back of your amplifier on the upper right side of the rear panel near the fuse cap and the AC outlets. Each pair of screws will be connected to one speaker. Your Onkyo can be connected to 4 speakers. If you want to connect only 2 speakers, use the screws labeled "SPEAKER A" and connect the speakers to the left and right channels, and make sure you connect the + speaker wire to the screw with the red marking around it. Connect your other speakers the same way, one speaker per pair of screws.
check your amplifier output speaker impedance requirements.. example: 8 ohms...build a speaker 8 ohms in parallel or series connection.. check the impedance using ohmeter ..you must reach the required impedance..
use 1 cell battery to check if you speakers are in-phase...if one speaker did not ..reverse connection and check again ...to give the good sound...hope you understand my english..:)
Unfortunately can't connect it that way. The pre out is only meant to go directly into an amplifier that has all of the same inputs (front/rear, center and surround), not a standard receiver. (Pre amp to amp only, not pre amp to receiver) If your Onkyo doesn't have all the same inputs as your Kenwood preamp has outputs you will just use your standard left/right outputs from the Kenwood to your Onkyo input (CD, Tape, Phono,DVD etc) then use the outputs (front/rear, center and surround) from your Onkyo receiver and connect directly to your speakers..
It could be that you lost the power supply to the surround amp IC or the Ic is defective. It should be mounted on a circuit board attached to the heatsink. Look for poor solder connections first. I don't recall the specifics of this model, but the surround amp IC should be easily located.
Update this with your progress and I'll try to locate the service manual in the meantime.
It's probably salvagable but I doubt it will be cheap or easy. Most likely you have one or more ruined output transistors. If you're into taking things apart and soldering, it might be easy for you. Just look for abnormalities on the transistors, usually a little hole in the center of them or blistering. Replace those and you'll either have it back to sounding good or much closer to it. Most output transistors do not fail without showing visual evidence of it.
With onkyo amps with hdmi up scaleing you have to tell the amp to let the signal through.To do this first press the setup button and you will see input assign,press enter,monitor out appers,press enter you will see hdmi out NO,flick enter button to the right this will change to yes,you should have a picture now.