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Sony Master
1,114 Answers
- Posted on Feb 28, 2010
Re: GOES TO PROTECT WHEN WE TRY TO PLAY THE CD, TAPE OR...
Receiver say's "Protect" or turns on then off
posted on Dec 13, 2009
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smarthome2
Rank: Guru
Rating: 88%, 432 votes
The most common problem found on FixYa for Audio Video Receiver's is:
My receiver say's "Protect" or turns on then off. What's wrong? Seven times out of ten it is a shorted speaker or speaker wire.
To determine your exact problem, the first step is to disconnect all
speaker wires "at your receiver" Next: Turn the receiver back on. If
your receiver still says "protect" or turns off, it needs to be
serviced. If your receiver stays on; reconnect your speakers
one at a time and power back up after each speaker. You may find that
after reconnecting all speaker wires it works! Most commonly the small
braids of wire from the + to the - have touched and have caused the
problem. In some instances, you noticed the problem only when turning
the volume up. either way, make sure the exposed wires to your receiver
are no longer than 1/2" long and are completely under the
screw down terminal or slide in. When you've found the wire or speaker
with the problem, your receiver will go back into "protect" At this
point, disconnect the wire from the speaker at the speaker that may be
causing the problem then test again.* Note* Make sure speaker wires do
Not touch each other as this Will cause a short! If you turn the
receiver back on and it stays on, you now know the problem is in your
speaker itself. To test your speaker, you will need a multimeter. Set
it to ohms resistance and touch the speaker terminals, if there is a
short internally the meter will read "1......" If it's an analog meter,
it will peg to the right. There's your problem. Now, within any speaker
there are quite a few possibilities as to what could be causing the
problem. Most common is a blown coil and the speaker needs to be
replaced. Some speakers have internaGOES TO PROTECT WHEN WE TRY TO PLAY - 2_bing.gifrs (usually floor standing speakers)
and may have a shorted or burnt board (usually very visible brown burn
marks on the board) and can possibly be repaired if your handy with a
soldering iron. Now, if you disconnect the speaker wire at the speaker
and it still says "protect" Check your wire for the obvious cut or nail
thru the wire if possible. If your system has wiring
that runs behind walls, you may need to use your meter again.
Disconnect the wire at both ends, keep the ends separated, put your
meter on ohms resistance and touch probes to the + and - wires at one
side. If the meter pegs to the right or reads "1...." the wire is
shorted and needs to be replaced or repaired at the short. Hope this
helps.
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