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I got Sony XMZR604 4 Channel Amplifier in my car and it is not working any more. The red power protector indicator is on. I have checked all the connections but it is still not working. Can u plz give me some assistance in wat I should do ?

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This usually means that the speaker outputs are being shorted out or ground is not secure. My suggestion is to turn it off and recheck your ground and speaker wires to check the are secure.

Posted on Nov 17, 2008

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I have a Sony receiver model Str - de 435 it constantly flash Protector and I tried everything to fix this any ideas


The protector indicator usually indicates that one of your amplifiers has shorted output transistors. This is not a user repairable problem and the amp will have to be taken into the shop for service.

Mar 21, 2015 | Sony Audio & Video Receivers

1 Answer

The word protector starts flashing a few seconds after the receiver it powered on


It indicates you have an output short circuit.First check if all the speaker cables are all right with no shorting of the wires.Next disconnect all the speakers and try turning it on, if you still get the protect display you have to repair the output stage of the Amplifier.You will have to get professional help for that if you have no experience in electronics.

Aug 23, 2011 | Sony STR-D1015

1 Answer

I have vestax 05pro2. Left channel works but out of one speaker. The turntable input is good. Im thinking Its either the channel fader, or the rca inputs for that side. Has anyone had this problem?


Hi,
Here's a solution to see if you have a problem with either your receiver or turntable.
The turntable has 2 RCA's one red for right channel, and one white or black for left channel, which plug into the back of the amplifier.

  • Unplug both RCA from rear of amplifier.
  • Plug in a cd or dvd player into those inputs on the amplifier, the sound will be lower but it will give you an indication if the amplifier is ok or not.
  • If you have sound on both channels left and right then the amplifier is good
  • If you still only have sound on left channel, then there is a problem with the right channel input on the amp.
  • If your amp, is good, unplug the cd /dvd player.
  • Put a record on and start playing the record
  • Plug the white or black RCA from the turntable into the rear of the amplifier marked left, you should have sound.
  • now unplug it from the left and plug in into the right red RCA socket, if you have sound the amplifier is working fine.
  • if there is no sound there may be a problem with the stylus cartridge on the turntable
  • now lets reverse the test
  • unplug both RCA from amp.
  • Plug the red RCA into the left socket on amplifier, if there is sound, turntable is working fine, if no sound there is a problem with either the stylus cartridge or that red RCA cable.
  • now unplug the red RCA from the left side and plug it into the right side socket
  • if there is no sound there may be a problem with the stylus cartridge or RCA cable.
I hope this helps

MobileJB

Jul 15, 2011 | Audio & Video Receivers

1 Answer

I have a sony str de-475 amplifier and the centre speaker stops working after about a minute. leave amp powered down for a while and it works again but only for about a minute


Try replacing the center speaker with one of the left or right speaker and run it for sometime ( do not connect the center speaker to any other channel ). If the system does not cut off the center speaker connection this way indicates a short in your center speaker.
But with the L/R speaker if the system still stops working you have a hardware problem and will need professional help to fix. 5.1 amps are complicated and difficult to access even for an experienced technician.

Jun 22, 2011 | Sony STR-DE475 Receiver

1 Answer

My sony receiver STR-DE135 is showing a protector message


Check for shorted speaker cables, or even a bad speaker. I'd start by disconnecting all speakers, see if the indicator goes out. If so, try one speaker at a time until you find which channel is bad, and then examine the cables carefully for things like a stray wire strand. Less likely, but possible is a shorted speaker. If you disconnect them all, and still have the protector circuit on, it's an internal issue, and you're going to need a technician.

May 30, 2011 | Sony STR-DE135 Receiver

1 Answer

MY MHC-GNZ7D MUSIC SYSTEM ONLY SHIWING PLEASE WAIT , ITS NOT WORKING PLEASEGIVE ME SUJETION


One possibility is that the power-on speaker protection delay is stuck on. The most common cause of this is a shorted transistor in one of the power amplifier channels. In that case, you will need to replace the speaker driver transistors in that channel. I don't have service information on your particular model; it may use power amplifier modules rather than individual transistors.

The tricky part is identifying the amplifier power and speaker output terminals to test for this problem. To find a shorted output transistor, you need to measure the resistance between the output of each channel and the plus, then the minus power supply connections. There is a relay between the amplifier output and each speaker terminal on the back; this relay is turned off by the speaker protection circuit, so you can't measure from the speaker terminals. If you have a fried transistor, one of the tests will show a resistance of a fraction of an ohm. A good transistor will have a very high resistance or read open. This will be the case whether you have modular amplifiers or discrete transistors.

If you see a blown fuse, that is a strong indication that you do have a fried transistor. Sometimes the speaker protector circuit shuts down fast enough to save the fuse, but not always.

Apr 27, 2011 | Sony Audio & Video Receivers

1 Answer

My reciverer says the word protector


The Word "Protecter" is you have a shorted Speaker or Wire to Speaker, or the Sony has a blown Power Amplifier

Oct 08, 2010 | Sony STR-DA80ES Receiver

1 Answer

When the protect lite comes on and the sound cuts out , what is it protecting ? the speakers or itself? thank you.


"Protect" is saving both really - but primarily the amplifier. The protector guards against shorted speaker wires, damaged and mismatched speakers, etc. If the amp is allowed to operate for a long enough time in this condition, permanent damage may result.

Usually, the lower the volume the amp is operated at will allow it to be played longer before the protect indicator comes on again. If played at a high level of volume, the protector will likely activate very quickly. Sometimes, damage to one or more output transistors seems to prevent the balance control from working correctly. You may find that you can only play the right channel at normal volume and the left is significantly softer - or not audible at all. This can be a fairly expensive repair - depending on the number of transistors to be replaced. Some factory service centers offer a flat rate repairs for this indication. Shipping these devices can be fairly costly however.

I hope this helps.

Jun 11, 2010 | Yamaha RX-V663 Receiver

2 Answers

Protector mode..


Cambiale los IC de audio que esten dañados.

Oct 13, 2007 | Sony STR-DE825 Receiver

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