Question about Onkyo Audio Players & Recorders

Hi! my name is Arthur. I have Onkyo nr 545 . Problem is Det.Protect: I I probaly connect speaker after circuit +and- speaker cabel beetween . Can you help me

1 Answer

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130 Answers

You have already pointed out the problem:
Problem is Det.Protect: I.
How to fix :
(1)download 545/535/525 service manual.
(2)check all power transistors CE & BE resistances
if theyy are very low ,0 ohm, or infinity.
(3)check all 0.22 ohm resistors if they are open
or turning greater.
(4)Check the biasing circuit with a small rating
transistor and an orange color variable resistor.
(5)Check all channels.

Posted on Oct 17, 2019

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2 Answers

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Posted on Jan 02, 2017

Anonymous

1 Answer

SOURCE: onkyo ht-r500 no speakers attached goes directly

I have a HT-R520 - First thing stated in the manual is 'Do Not Apply Power to the System Until All the Speakers Are Connected to the Receiver.' This practice avoids any hot connects to the speakers. As with any high-outpiut system connecting spreaker wires to the system while in operation can spike the speakers as well as the amplifier curcuits. Hook up your speakers first and give it a try. Good Luck!

Posted on Aug 20, 2009

Anonymous

132 Answers

SOURCE: I have a new house that had speakers built into

you can check them with a ohm meter, hook it to the wires that you hook to the reciever and if you get a reading it is good if no reading it is bad wires

Posted on Nov 22, 2009

Mical Caterina

3400 Answers

SOURCE: I have four Bose 161 speakers and an Acoutismass 5

you're going to need a ohm meter (good electrical testers have them) and make sure ohm ratings from speakers match the ratings for your receivers. Sounds like to much resistance for receiver(s)

Posted on Jan 06, 2011

Rommel Cana

5807 Answers

SOURCE: Onkyo 545 one channel don't work

Use headphones or Computer Speakers
and plug in to your headphones jack.

If the audio is present on both channel , check your speaker system

or the jack circuits.

If symptoms are the same, follow the troubleshooting on the link

above.

Posted on Oct 10, 2012

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Every time I turn on my Onkyo receiver it goes in to protect mode.

Please check your speaker cables. Make sure that all of them are seated properly, none is touching each other or to the body of receiver.

Are you using banana plugs for connecting speaker or just directly. Some times even a little tiny frayed speaker cable touching the receiver could trigger the protect mode. Be careful, since protect mode is sometimes not fast enough to activate and it could blow a few trasistors in the power output circuit.

Please take out all the speaker cables, unplug your receiver from the mains and try to restart without any cables plugged. If it powers on then you are lucky.

If not and the receiver still goes into protect mode or wont turn on then it possible that there are bad connections on the main board or have some blown transistors. How old is your system? if its still under warranty then you should contact Onkyo immidiately.

Let me know if I can be of any further help. Please do rate this solution and thanks for using FixYa!

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