Question about Onkyo TX-SR702 Receiver
I shorted speaker wires I was hooking up. Now the receiver turns on only for long enough to display "PROTECT" before turning off.
the red "standy" light is lit when it is off.
How can I reset it?
SOURCE: problem with onkyo tx 919 unit
If you've had it "fixed" 3 times and the problem comes back either you have the wrong impedance (ohms) speakers connected or the power supply in the unit is the actual problem.
Happy new years,
Posted on Jan 01, 2009
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,
R6091 (2.2ohm fusible)
R6081 (2.2ohm fusible)
R6101 2x 0.22ohm 2W
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.
Posted on Sep 03, 2009
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