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Messages - dch53

#1
Thanks David. If the problem recurs I'll do that. I'll see if I can get a hockey-stick bit for my soldering iron.
#2
Thanks to David for giving me debugging directions. Problem is probably a dodgy connection of pin 112 of the DSP chip to the main PCB. Prodding the pin with a very fine probe seems to have fixed it for now.

I use a company in Perth to solder very large surface mount ICs for me when I have projects that require them. If the problem recurs I'll take my UP to them and get them to resolder that joint.
#3
Here you go.
#4
Hi David,

The version I updated to was from the link you provided above: https://analog-precision.com/forum/firmware-updates/firmware-update-210513-1335/. I've reinstalled 181009-1539.

Sorry, the code field on the display had never registered before. I've attached an updated table. The code for DSD256 is red but very faint.

Thanks, Dave.



#5
Hi David,

I downloaded and installed firmware-update-210513-1335.

I've attached a table of the sample rates that I have. I don't have many 88.2kHz files but that sample rate could always be mapped to something else in JRiver.

With this firmware version that my UP makes clicking noises when in standby model.

Thanks and regards, Dave.
#6
The Preamp is an early UP I purchased in October 2017. I updated the firmware recently. I couldn't work out how to get the firmware version from the menu so I used UPCP.

Version images attached.

So, to summarise, when playing any sample rate DSD the DAC Mute LED is always on. The correct sample rate is displayed but while the Amanero Status screen shows DSD Enabled, it also shows Sample Rate as "Unsupported". I've had the problem intermittently since 2017 but now I've had it for a couple of months. I've no idea what triggers the problem or why in the past the problem has gone away.

I'm happy to pay freight both ways and for your time if you're happy to look at it. Or, if you can suggested a particular module, I could send you that.
#7
Hi. I removed the 26-way IDC cable connected from the Amanero isolation board to the main DSP board. All prongs on the USB and main board sockets are spotless.

So, I made up my own cable. The result is the same; PCM is fine (even 176.4kHz and 192kHz) but no ability to play DSD of any bitrate.

I originally though the problem was related to the bitrate but now I realise that the problem is with DSD.

I've tried 2 different computers and Foobar2000 set up for DSD as well as JRiver.

Any more suggestions please?
#8
I installed JRiver and Combo384 Amanero drivers for Windows 10 1067 in the new Windows 11 home theatre computer I built recently and copied across all my music.

On playback the result is the same as from my custom-built Music Server: DAC Mute is on for any bitrate > standard CD.

I'll try opening up my UP sometime in the next couple of weeks.
#9
Thanks. I'll give those a try too.
#10
Thanks for the link. I hadn't seen that before.

I don't have any higher bitrate PCM so the sample rate changes aren't relevant. It appears that my problem is with DSD files. I have a lot of DSD64 ripped from my large collection of SACDs. The display shows

DAC Source    Preamp(Multi-Ch)
Input Source  USB
Sample Rate  2.822 MHz

DAC Lock is ON but DAC Mute is ON also.

The Amanero Status screen shows DSD Enabled as "Yes" but Sample Rate as "Unsupported".

Today I don't even seem to be able to get intermittent audio.

I put this dedicated music computer together in 2017. Relatively old now but DSD64 has been fine most of the time as have the few files I have of DSD128 and DSD256. I just checked to make sure no unwanted processes are running. When playing DSD64, CPU utilisation sits at 2% most of the time.

When I get time, I'll try a different computer.
#11
Thanks for the reply.

I don't think this is a problem with the bitrates not being supported because they've all played before and DAC Mute is ON for files that are supported.

For example, the first 2 images show the display on a track of a Willie Nelson album I purchased 4 of months ago and have played successfully a few times. JRiver shows a sample rate of DSD64 (1x), Bitrate 5644, file type dsf.

Strangely, I was messing around with the  Bitstreaming and Prebuffering settings in JRiver, and after returning them to "Yes (DSD)" and "6 seconds" respectively, the first track played for a few seconds and stopped. I left it playing while I was writing this and the sound started dropping in and out with DAC Mute flickering all the time. Sample rate flickers between DSD-64 and Unsupported. Playing around with the JRiver settings could be irrelevant.

Same with another DSD64 track I ripped from an SACD a while ago.

Earlier when I tried an 11289 dsf track, DSD128 (2x), DAC Mute was on permanently. Now I'm getting sporadic sound. DAC Mute is flickering and the sample rate is flickering between DSD-128 and Unsupported. Eric Bibb images.

Maybe the problem is something JRiver or the PC is doing.

Hopefully the problem will go away as it has done before.

#12
Hi.

I have this problem from time to time since I received my UPP in late 2017 (Wow! Was it THAT long ago?). I don't know what causes it and I don't know what fixes it. While I have the problem, I can't play high bitrate files.

I have the latest firmware. Source is a dedicated music PC with an Amanero card. Software source is regularly-updated JRiver. Output Format Sample rates are all set to Output "No change".

Standard 44.1kHz CD files play fine. 9219 flac plays fine and the UPP display shows a sample rate of 192.0kHz. Other lower bitrates play fine too.

For any higher bitrates the DAC Mute LED is on:

2259 dsf shows a sample rate of 11.289 MHz. Amanero Status Sample Rate is shown as "Unsupported".
16934 wav shows a sample rate of 352.8 kHz. Amanero Status looks OK. DAC Mute still on though.
16934 dsf shows a sample rate of 2.822 MHz but Amanero status Sample Rate is shown as "Unsupported". Pictures 5 and 6.
11289 dsf shows a sample rate of 5.645 MHz but Amanero status Sample Rate is shown as "Unsupported". Pictures 7 and 8.

I'd really like to get to the bottom of this problem!

Thanks!