Hi!
I have a problem with my Onkyo receiver. After connecting the plug, the power automatically wakes up from stand-by mode. The main transformer is turned on and even the speaker output relays turn on. The default input source is "BD/DVD". When I put an audio signal into this input and connect the speakers, it plays and that's where the good news ends. No buttons on the front panel work, not even the volume encoder.
Combining the reset buttons does not work, but once I somehow managed to reset the device (the appropriate message "Clear" appeared on the display). Unfortunately, this did not bring any result.
Sometimes when I press the power on button, the software version probably appears on the display.
All voltages from the stabilizers are present.
I am wondering about the high state on pin 69 (SYS_PROTECT) 3,3V of the main R5F364AKA microcontroller (IC7001). I scoured the Internet looking for some advice and most Onkyo receivers with similar symptoms had problems with EPROM, or at least that's what they suggested on the forums.
Previously, the receiver did not respond at all and I decided to short pin 9 (RESET) on the P7004 socket to ground and since then the equipment has been starting as I described above.
I could try to upload a new batch to the EPROM, but I couldn't find it anywhere.
This is where my skills end.
Thank you in advance for all your tips
.
I have a problem with my Onkyo receiver. After connecting the plug, the power automatically wakes up from stand-by mode. The main transformer is turned on and even the speaker output relays turn on. The default input source is "BD/DVD". When I put an audio signal into this input and connect the speakers, it plays and that's where the good news ends. No buttons on the front panel work, not even the volume encoder.
Combining the reset buttons does not work, but once I somehow managed to reset the device (the appropriate message "Clear" appeared on the display). Unfortunately, this did not bring any result.
Sometimes when I press the power on button, the software version probably appears on the display.
All voltages from the stabilizers are present.
I am wondering about the high state on pin 69 (SYS_PROTECT) 3,3V of the main R5F364AKA microcontroller (IC7001). I scoured the Internet looking for some advice and most Onkyo receivers with similar symptoms had problems with EPROM, or at least that's what they suggested on the forums.
Previously, the receiver did not respond at all and I decided to short pin 9 (RESET) on the P7004 socket to ground and since then the equipment has been starting as I described above.
I could try to upload a new batch to the EPROM, but I couldn't find it anywhere.
This is where my skills end.
Thank you in advance for all your tips
Hi. Can't help you with processor reprogramming, if that's possible at all. I think at first check the reset sequence, try to replace external eeprom chip to new empty (if exists at all), and also check if communication is ok with other devices , like i2c communication with tuner . Power button not damaged and not shorted ? Processors maybe are good and reliable devices, but sometimes internal eeprom fails , and cpu misbehaves. If you are good programmer, can try to play with another type processor , to reprogram same functions and control devices like tuner ic, but that's hard way. Maybe donor available ? If you have a scope , check power supply voltages, if there's no excessive ripple or other anomaly. What's story of this receiver? Did you get it in this state as is,.or it worked well and suddenly stopped working?
I received it in the condition I described. Unfortunately, I don't know anything about programming, but I can copy the input from a working EPROM. It wasn't much of a problem. At least that was the case with the subwoofer from the LG soundbar. The subwoofer would not turn on. After programming the EPROM for which I found the software on the Internet, the subwoofer works.
I'm not sure if it will be that simple here too. If I know life, probably not. I checked the power button and even soldered another one and it didn't change anything. I mostly repair old analog amplifiers and there are no such problems. Sometimes you have to step outside your comfort zone. 🙂
Will the new empty EPROM program itself? I'm new to this topic of EPROMs.
Regarding communication of the main microcontroller with the rest of the modules. While turning on the receiver several times, I unplugged the plug from the radio module. The display shows a message that the radio module is being reset.
I'm not sure if it will be that simple here too. If I know life, probably not. I checked the power button and even soldered another one and it didn't change anything. I mostly repair old analog amplifiers and there are no such problems. Sometimes you have to step outside your comfort zone. 🙂
Will the new empty EPROM program itself? I'm new to this topic of EPROMs.
Regarding communication of the main microcontroller with the rest of the modules. While turning on the receiver several times, I unplugged the plug from the radio module. The display shows a message that the radio module is being reset.