Question about Onkyo TX-SR605 Receiver

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Onkio TX-SR500 don't leave stand-by

My amplificator leave on "stand-by" mode. Even if a try to close or open it, it stay "stand-by".

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Re: Onkio TX-SR500 don't leave stand-by

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Posted on May 07, 2009

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Good luck and thanks for using FixYa

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My Onkyo TX-SR500 receiver stays in standy/on mode.

It may be your amplifier protection circuitry is being activated and shutting down automatically. This is usually caused by a faulty output transistor in one or more of the channels. I recently repaired my Onkyo TX-SR500 which had this problem.
Using a multimeter on ohms check between C and E on each of the ten output transistors. I found Q6051 and Q6061 to be short cct on all pins. Once you have located the faulty channels check the adjacent components for open or short cct.

I replaced the following components,
Q6051 (2SD1047)
Q6061 (2SB817)
R6091 (2.2ohm fusible)
R6081 (2.2ohm fusible)
R6101 2x 0.22ohm 2W
Q6031 (2SD2061)

The amplifier now works perfectly, cost of the parts is about $15-$20.
If you don't feel confident doing this yourself just find a friend or tech who can do it for you.

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Turning any receiver off will erase the settings - there is no backup battery (Onkyo uses Battery Free Memory Backup) and the length of time depends on the capacitor charge. Why not just leave the receiver plugged in? Stand-by mode uses a negligible amount of power - enough to keep the capacitors charged and the LED on the front panel on.

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you most likely fried a circuit board trace on the power supply

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I just read over the problem you were having with your Onkyo TX-SR500 receiver. It sound like the unit needs to be setup for all five channels.Sence your symptom says the diplay shows Dolby D3/2.1. According to the owners manual with the remote control look for speaker setup whin the button is pressed the current speaker setup will be shown in the display. Press the preset/adjustment<> to change the current setting to five speakers. the listening mode will automatically change according to the number of channels you selected. Hope this helps. Radiotech

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