Question about Panasonic SA-XR25 Receiver
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Posted on Jan 02, 2017
SOURCE: SA HE200 ~ Overload at power up
First of, be sure volume is turned all the way down before or as you are powering it it.
Second if that does not work disconnect all speaker, and input/outputs. Power the device on and see if it says overload.
If it does skip the rest of these steps, your capacitors are bad or the power supply is no longer functioning correctly.
If it doesnt, start with testing each speaker at power up. Match the speaker to the output it goes on, power the device see if it says it.
If it does on any speaker test it is a speaker issue or a terminal issue. To test for terminal or speaker issue plug a different/ known to work speaker in that same terminal, if it doesnt say overload it is a speaker issue, if it does say overload it is a terminal issue.
Once you have made sure all speakers and terminals work correctly start plugging input and outputs in and test individually.
Posted on Jan 09, 2009
SOURCE: the receiver says
This is a variant of the "protect" mode for receivers. This indicates that a problem was detected in the final stage of the output amplifier and the unit has shutdown to prevent further damage. The "fix" for this is to replace either the output transistors or the amp-pac. I don't know which variant is used in your specific model. If it is the output transistors, expect a parts cost in the $15-$30 range. If an amp-pac, the parts will run in the $75-$100 range. Dan
Posted on Jun 09, 2009
SOURCE: overload, switch off
I had the same problem, in that the receiver would automatically shut down displaying the "overload" message. I checked the 5 fuses inside, as well as ensured that the fan was working. I was using six 4ohm speakers + subwoofer. All the speakers other than the rear center channel and subwoofer were ceiling mounted in the room.
However, I decided to check the overall impediences of each speaker line to ensure that there wasn't an issue with the speakers. It turns out that the net imediances of the four corner speakers and the front center speaker were 5.7ohms because of resistance in the long lengths of speaker wire I had. However, the impediance of the rear center speaker was only 4.7ohm -- because the speaker line was much shorter.
Thus, the quick solution: ensure that all the speaker line lenghts are the same, (to ensure that the overall imediances of all the speakers are the same). Once I did that, the receiver started working beautifully -- full loudness surround sound working fantastic.
Posted on Dec 27, 2009
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