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Post by bigshane90 on Jul 15, 2018 18:41:34 GMT -5
This will be my first post here so I hope this is ok. I've got the onkyo txsr444, I rearranged my living room and got it all set back up. Upon power on it went into the protect mode. It kept saying ng:c I did some searching and found the reset procedures. I attempted multiple times and removed power, to no avail. During my attempts the error message changed from the ng:c to the ng:lr message. I feel as though it's an internal issue. I'm an auto technician by trade and I'm good with electrical and general measuring. But I don't have the slightest idea where or what to test on this unit. I'm not sure if anybody could help me out or walk me through fixing this but I would really appreciate it.
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Post by mastertech on Jul 16, 2018 9:24:53 GMT -5
Try testing with everything disconnected. No speaker wires and no input connections and see if you still get the error.
What procedure did you use to reset?
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Post by tibimakai on Jul 16, 2018 10:02:48 GMT -5
That sounds weird, to switch from C to LR.
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Post by bigshane90 on Jul 18, 2018 17:10:36 GMT -5
I tested with everything unplugged. Even did the reset with it unplugged. It was in the owners manual. I used the on/standby and cable sat buttons to clear. It said clear on the screen. It goes back through and does the same error. Yeah I'm not really sure why it changed? I can get it back out tonight and see if it's still giving the LR code
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Post by tibimakai on Jul 18, 2018 17:24:28 GMT -5
If it shows any of these errors, that means that that channel is most likely shorted.
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Post by bigshane90 on Jul 18, 2018 22:07:27 GMT -5
Can it be shorted on the circuit board? I have nothing plugged into the back of the unit and still receive the error. Where do I go from here?
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Post by tibimakai on Jul 19, 2018 10:22:26 GMT -5
When I have an issue like this, I measure the final transistors first, I'm looking for short, between the terminals. Diode mode on the meter and receiver unplugged. If I find shorted transistor(s). There are two per channel. I take everything apart and start measuring each(!) component at that channel, for short, or odd values. I'm not familiar with that receiver, but if it is like the TX-NR series, which has a vertical pre amp board, than every component on the bad channel has to be verified as well. Usually, the most bad components are on that board.
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Post by bigshane90 on Jul 20, 2018 5:56:47 GMT -5
Do I need to take the case apart to test these? Or is this a test through the speaker terminals?
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Post by tibimakai on Jul 20, 2018 10:05:12 GMT -5
You will have to take the cover off. Eventually, if you find shorted transistors, the whole thing has to be taken apart.
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