Question about Audio Players & Recorders
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?
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
Posted on Mar 08, 2008
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Posted on Jan 02, 2017
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Aug 27, 2014 | Audio Players & Recorders
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.
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