Re: Marantz NR1504 No sound

madan1: the weird thing is it doesn't matter that there is sound or not, the service menu always shows the correct fw version of each component. Also, when there is sound, I can switch through all DSP sound modes, so the internet radio should go through the DSP chip.
The BGA heating would be my next step, but first I'm going to check all connections/grounds and audio traces on PCB, because it looks and sounds like a cracked solder joint or PCB trace.

mmartell: thx!I'll definietly check it out.

Re: Marantz NR1504 No sound

15V, +/-7V,5V main lines are ok(clean, straight line) measured on the board connectors.

Checked the four EX4AV DC-DC converter, 1.1-1.2-1.8-3.3V good, measured on the "output" caps. I checked the voltage on the few big electrolytic caps on the DAC's power lines, the supplies were ok.
But...there are a few caps near the DAC(on the VCC1/VCC2 and VDD lines) and I cannot reach them, because it's under the HDMI board along with the DAC chip

So for now, at least I know that the source where the voltages are created...

Re: Marantz NR1504 No sound

Ok, now I'm a bit of confused.(and sad, because looks like there is another problem than R2A)

After a few days I had time to measure the up/downstreams. The receiver was unplugged from the power outlet for days.
So, first I switched to an internet radio and there was sound on the speakers also on the headphone. (First a little distorted, but after a few minutes it became OK)
Switched thru the dsp sound modes, checked each channel downstreams, and there was signal on the lines and sound from the speakers.

Then I tried...

Re: Marantz NR1504 No sound

Thanks, this is a good idea with the up/downstreams, i'll check it.

The +/- 7V is present (~±7.2V) and testing with pure/direct audio on, there is no analog signal coming from the R2A (at least measuring on the connector which goes to the amp board).

Hi all.

I got a used Marantz NR1504 AVR with a firmware problem. The amp was stuck in a "update failed-retry" loop, possibly failed when the owner tried to update the fw over the internet.(Marantz/Denon well known issue)

I managed to break the loop and updated the firmware from usb.
The problem is that no sound coming from the speaker nor the headphone output. I tried different versions of FWs from usb also updated over net with the latest fw. Nothing changed.

Everything works fine btw: front display menus, web GUI, relays switching...

Re: New Members - please post your introductions here

Hi all, I'm nyogo from Hungary. Mainly dealing with software engineering(mobile platform) and repairing electronic gears just for fun.