Question about Onkyo TX-SR502 Receiver

2 Answers

Onkyo SR502 Shuts off by itself

My Receiver shuts off by itself. It will stay on for a couple of seconds and shut off. I was able to get it to stay on but it sounded awful and it got uncontrolanbly loud. I went to turn the volume knob and it shut off immediatly. What is wrong with my baby? How much will it cost to fix? A friend of mine thinks it's a blown fuse, is that true? Thank you in advance!

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  • 36 Answers

It will stay on for a couple of seconds and shut off. How long did your amp stay On?
3 seconds (DC protect) OR immediately shut down (Over Current protect)? How to confirm?
1.Unplug the amp.
2.Remove the metal cover.
3.You will see a long vertically installed pre-amp board mounted next to those large power transistors fixed by 12 screws on a large aluminium heat sink.
4.Remove this long vertically installed board mounted by 2 screws.
5.With 2 screws removed, just pulling this board out and hold it with one hand.
6.Plug the amp and switch it on.
7.If your amp stays ON forever, the problem is from this long board.
8.If switch off at once, the problem is from power amp board.
Try the above-mentioned steps. I will tell you what to do next.

I went to turn the volume knob and it shut off immediatly. Of course, VOLH is too high.

Posted on Sep 18, 2017

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  • Onkyo Master
  • 12,962 Answers

It is not a blown fuse. Your baby is in its ***** throes! It is fubar. You have either a damaged power supply or blown output stages (since sounds horrible it is probably this).

Posted on Sep 17, 2017

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Posted on Jan 02, 2017

SOURCE: Onkyo TX-SR502 - o Sound!

pls make it reset at factory level ,but pls note that you have to keep it in aauto mode

Posted on Mar 13, 2007

  • 2 Answers

SOURCE: Blown Fuse, needs fix'n

Regarding the last answe, how do you know if it is slow blow or fast blow?

Posted on Jan 21, 2008

  • 142 Answers

SOURCE: Onkyo TX-SR502 protection mode

Hello! One of the channels in your unit has shorted output transistors and is sending about 60 volts towards your speakers. If your unit has an output chip ( I don't ever remember seeing an Onkyo with a chip though...all discrete transistors ) it is shorted. Your unit is well worth repair. Onkyo is an execellent unit. Please rate this solution! Thankyou!

barneyluc

Posted on Oct 08, 2008

  • 2 Answers

SOURCE: onkyo TX-SR502 AV receiver

L7002

Posted on Dec 08, 2008

hi-fi
  • 25 Answers

SOURCE: My Onkyo Receiver TX 601 is turning itself off

Adjust bass control to half position then feed loud signal,if it shut off adjust the bass contol to zero position,if it shut off again the defect is in the over load protection circuit it is already sensetive to loud signal.you may call the nearest audio amplifier technician on you.

Hope it may help you,

Posted on Dec 29, 2008

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