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I have an identical national tc 300 sp 3-in-1 unit. The power input for this set will automatically accept 120-220-240 VOLTS AC. The ac power pins in the 6-pin socket are the two horizontal pins immediately underneath the locating spiggot in the socket.
The reciever is telling you that their is a problem with the speaker cable. I sugges pinpointing which speaker cable it is by turning the system off then unplug all the speaker cables and then plug one in at a time, waiting inbetween allowing enough time for the system to pick up the bad sp cable. Then once you find the correct cable check it from the reciever to the speaker for any signs of breakage, shorts, or damage. Check the speaker connections from wire to speaker and from the wire to the reciever. If all that fails then check the speaker itself, try swaping another one in the position to see if the problem is solved. Hope this works.
Hi, sp stands for Speaker. What it is asking you to do is check for any type of short circuit on the connections to the speakers. This could be at either end. It is, in effect telling you that there is a wiring fault in that area and it has detected it because there is not enough electrical resistance in the circuit. hence, a short circuit. Wires touching each other. Examine the back of the receiver with a good flashlight and examine the connectors on each speaker. Note: it may also be responding to a broken cable. I hope this helps, Good Luck, Mark
Hey bro, if your looking for the "system cord" that says on the back of the unit TO: SP-PWC5. Look no further your part number is 6200044901 just type this into google or hand it over to you local electronics stores and they might be ablet order it for you! God Bless!!
The speaker cables are the ones that clamp or tighen down on the back of the reciever. All the spkr wires have to have the positive and negative leads correct. Also not aven one little strand of wire can be touching another conductor or you will have this problem. Make sure all leads are correctly ran and hooked up positive to positive and negative to negative from the back of the reciever all the way to the speakers. This should solv your problem.
It has nothing to do with the input you choose. A speaker wire is shorted. Disconnect each one in turn and try it. The last one disconnected before it stops failing is the one.
That is a check the speaker wire error, caused by a short or perceived short. If you look at the back of the receiver you may see 1 strand of the wire loose, they are very hard to see sometimes. You may use banana plugs as it is painful to get everything hooked up without a few loose strands.
If there is still the issue check your speaker connections for the same issue. If they are in ceiling/wall speakers disconnect them all then plug them in one at a time to narrow it down.
If the issue persists perhaps one of your speaker wires has a short somewhere, could be a misplaced drywall screw from hanging a picture, or a carpet tack strip, or a pet deciding it was a nice chew toy.
If you are completely sure it is none of those then I would say it is a bad speaker or receiver. Try changing in and out known good speakers/receivers if you have access to them to see which one it is.
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