Sony dvd receiver displaying protect even when am useing it made speaker
SOURCE: code for sony receiver model str d565 protect mode
If you need support you can log into:
http://esupport.sony.com/US/perl/support-contacts.pl?mdl=STRDG510
for free tech support on sony chat line
SOURCE: Onkyo Tx-v940 Receiver/Amplifier Protection Mode
Audio amplifier IC's damaged you need to change it.Good luck
SOURCE: STR-DE475 receiver flashes "PROTECT" when turned on
Protection is usually a sign of overheating or something is wrong at the power amplifier's output.
Theory: Protection is a delay and sometimes an internal test to allow the electronics to stabilize during power up before they are allowed to interact with the speakers. The most common cause of it remaining ON is that a speaker cable pair is shorted. Some isolation is required...
1. Turn the Power OFF.
2. Disconnect each set of the speaker wires that are directly attached to the receiver. Mark them so you remember where each one went. pay special attention to which conductor is on "+" or "POS" and which is on "-", "COM" or "Ground". You may elect to disconnect them one pair at a time if your sytem is complex and you don't want to lose track of where things were.
Turn the Power ON. Is the "Protect" indication gone from the display?
--------------------
If YES, you have a shorted speaker wire or speaker. To isolate the specific cause:
1. Turn the Power OFF.
2. Attach ONE speaker wire pair at a time and test it by turning the Receiver ON. When the "Protect" light returns you have isolated at least one of the cause(s). Disconnect the defective speaker cable and continue isolation of all speaker cables. Visually examine the cable at both ends for frayed wires that could touch each other or contact metal on the receiver or other objects.
To isolate further within the cable/speaker pair - disconnect the speaker end of the cable on the failing path. Try another cable that you know works, or at least one that doesn't cause Protection to stay on.
If you're electrically savvy and have a Digital Volt/Ohm Meter you can troubleshoot the short(s) with it.
-------------------------
If NO, there is probably an internal problem.
Is it solid or does it come on after the Receiver has been ON awhile.
It could be overheating.
Is the unit hot to the touch?
Is there a cooling device (fan)?
Is it stopped or clogged with dust?
Is there adequate ventilation around the unit for air to flow?
Clean any ventilation slots on the top and bottom of the unit.
Avoid stacking components that produce heat under an amplifier or receiver. Their heat rises. Also keep them away from other heat sources like like home heating vents and radiators.
Problem solid and NOT related to the speakers or heat: internal malfunction.
Let me know.
SOURCE: Sony's STR-DE675 5.1 Channel Receiver - Speaker OFF problem
There's a button that turns the speakers OFF right above the headphone jack.
Get the manual: retrevo.com
Testimonial: "@dunnbiker Very true on assumptions! I've tried everything the manual suggests. Right now, nothing is connected to the unit, but upon power up, I get the SP:OFF display (which is not seen in the DEMO mode). I will try the headphone jiggling idea and see what happens."
SOURCE: Sony STR-GX800ES receiver "protector" blinking - no sound
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
internal crossovers (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.
It is possible that the amplifier had encountered a fault with a higher current drain which had triggered it to a protection fault condition. The fault can be with your output drivers. Please check for short on the outputs fitted for both the channels. Use a meter after disconnecting to check for short in the drivers. Disconnect the positive and negative voltages to the output and see if the protect changes. Even a fault in the preamp stages that drives in high current into the output can shut the Amplifier. Sometimes this can be a noise which can be a HUM or HISS before the protect works. Faulty capacitors in these circuits also can cause similar issues and needs close observation.You need to confirm and replace the specific stages or outputs. If not there can be issues in the mother board. Maybe the protect circuit by itself is shutting off due to a faulty bias or there is a leak in any voltage/current sensing circuit. Also disconnect the speakers and test, if the amplifier comes out of the protect mode then check for short on the speakers.
93 views
Usually answered in minutes!
×