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Because each of these steps represents a possible solution to this issue, check the A/V receiver status after completing each step. The audio device is not displayed as a cast device in the 360 Reality Audio compatible music streaming service app. A time ago I read a repair blog when the repair-man said that a diode with two reads, must have similar two reads values. He measured an on-board diode with a forward read of 0.43 V and a reverse read of 0.83 V and say that it don't worry him becouse the reversed read was much high than forward read.

If a cord is frayed or in contact with another terminal, an error will occur. Fix the connection to prevent a short circuit. To be sure if the I.C.3100 was causing the problem I removed it out of the circuit and replaced the zener diode. I re-assembled again and applied the power but this time without much expectation and after booting up this is what I saw.
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To be sure I lifted one pin from the circuit and re-tested again and still got the same reading . Since this diode was at the output of the amplifier circuit I was very sure this was the cause of the problem. The diode of labelled D3101, to be sure the exact diode type I had to google this model and I got the service manual from the internet effortlessly. I have a Sony Hometheatre D340 which has same problem I put it on plays for like 20 minutes then goes off and displays push power protect on the LCD screen.

Actually it's voltages to amplifier that will be missing. These voltàges they switch amplifier of the DVd. These voltàges are created on the secondary power supply. These are my fault findings Thurs far. Pro job with hopefully a safe ending as soon as the ordered chip has arrived and is added to the circuit board.
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See the above link for more info on testing diodes. Focus mind and suspection are two of the keys to electronic repairs.Good job. Next I removed the motherboard from the system and scanned the bottom side and again nothing seemed suspect.

After testing the machine, the client was happy and I left it at that, now it is over one month and customer has not called with any complaint and therefore I hope he is still enjoying. From the circuit diagram I was able to see the diode was actually a 39 volts Zener diode, having no smd 39 volts Zener diode I bought an ordinary 39 Zener diode and replaced it. I tested the power supply and found it was okay and all the output were within the expected range. Volume is set to maximum and cannot be adjusted on the Apple AirPods when connected to the home audio device.
PUSH POWER / PROTECT / PROTECTOR is flashing in the display of the home audio device.
Refer to the video below for how to remove "Protect Error" on a Sony receiver . To get the full experience on Sony.co.uk, please change your settings to allow JavaScript.
If the issue is still unresolved, service may be required.Go to Product Repair. DEMO appears on the display window of the unit and the Power or HOME buttons do not work. If the issue is still unresolved, service may be required. This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
The machine no longer goes into protection mode, I connected the speaker for testing purposes and I love what I heard. Nice, soft and soothing music coming out of the machine. Since this I.C was not in my market, I ordered it online from China and because of the outbreak of Covid-19 there was a lot of delay in shipping the part to Kenya. This lead me to suspect that maybe the reading I am getting both ways when the diode is in circuit could point to an internal short on the digital power I.C which in my case was CXD9981TN.
Replace low impedance speakers with the correct impedance to prevent this from occurring. Yes, the diode had same reading both in circuit and out of circuit both ways, actually had a beep. Always testing suspected components off the board is good practice else it is very time consuming process specially in laptops. Please give a support by clicking on the social buttons below. Your feedback on the post is welcome. If you have electronic repair articles to share with us, please contact usHERE.
From experience, it is always good to check for related components when finding a questionable parts on board other wise it is time consuming and tiring. Have a blessed day and thanks for sharing. Check the speaker wires and speakers for proper connections.

If the speakers are within the recommended impedance range, check the connections. If the speakers being used are within the suitable impedance range and they are still not working, there may be a malfunction or some other flaw within the speakers. So I applied the power and the machine came up beautifully and then displayed “push power protects” on the screen and with that I confirmed the customer complaints. I took the machine with me to my workshop, opened it and did visual scanning and nothing seemed suspect. Sony home theater receiver model HBD-DZ810 came in with “push power protects” error now repaired.