View Full Version : Caiman seg doesn’t remember filter settings?
As per title, had set the dac to the 3 flash setting for both cd and Spotify via google chrome audio. Played Spotify yesterday and it sounded dull. Checked this evening, and the settings had gone back to filter 0, I.e. no flashes. Any answers?
Hello Mr Neds,
Mine forgets the filter setting also and I prefer to have it on dimmed leads, this setting can also be forgotten.
I've got two Caiman SEGs, one is stock with no updates and it has no problems (excellent kit), the other has the Seg30 with the above problems.
Do you have a SEG30 in yours?
Hi meBob. Thanks for the reply. I don’t know if mine was upgraded, as I bought it from anAOS member vie the forum. He didn’t mention it, but I’ve got a feeling that he was the second owner. I only noticed because Spotify sounded terrible. I’d had a week of only playing cds, without any issue, but the cd filter setting had dropped to 0 when I checked. How often does it happen to yours?
Mine is happening about 1 in 3 power ups.
If you want to check whether you've got a modified version, have a look at the sides of the dac, there should be a white circular sticker covering one of the four screws that secure the top cover, if this sticker been torn and you can see the screw underneath then it's been opened up and might have been modified.
Thanks for the sticker tip! Mine is still there. It looks like it’s been picked at, as there’s a small crescent missing at the top edge, though I can’t see why someone would try to pick it off, then give up? I also haven’t found any other threads about this issue. Stan strikes me as the sort of guy that would be mortified if he sold dacs with this kind of failing
Theadmans
14-11-2019, 18:54
I may be wrong on this - but I think I had this "forgetting" settings thing on one of my many Beresford Dacs over the years...
I think Stan replaced the firmware chip and then all was well...
...As I say I cannot be a 100% on this as it was a few years ago.
The settings I think get written to the chip - if you get a duff chip then it stops being written to.
Hopefully Stan can confirm if this likely to be the issue.
Thanks Adam. I think it’s settled down now, but I might message Stan to see what he says- it would be a major pain to have to reset it every time I turn it on!
To check if the chip is SEG 30 take the cover off and look at the chip it should have it written on it.
Thanks Tim. I’ll have a look
As a thought keep it powered on then there would be no problems?
Very sensible Andy. I used to leave my gear on permanently, until I read a post years back that said it was a waste of time and electricity. I’m now thinking of going back to that. I guess I thought that the SEG would overheat or fail in some way. Do most people leave them on?
Stryder5
25-11-2019, 09:52
I never turn my hi fi stuff off (except valve stuff). Found out long ago while working for major computer companies that failures generally arose after switch off, switch on. I know others will disagree but this is experience of hundreds of thousands of electronic components, worst being routers.
I do switch everything off if I’m going away for weeks at a time.
One company went to the extreme of using “burnt in” chips........they failed in just the same way.
Components due age and fail prematurely but I guess it’s swings and roundabouts.
My TAGmclaren F3 cd transport has been on since 2000.
Gary
StanleyB
27-11-2019, 21:30
As per title, had set the dac to the 3 flash setting for both cd and Spotify via google chrome audio. Played Spotify yesterday and it sounded dull. Checked this evening, and the settings had gone back to filter 0, I.e. no flashes. Any answers?
Sorry for the late reply. I had a funeral to deal with, and then also found out that the AoS website is being blocked by my browser suddenly.
I have had a look at the issue and ran it through my code emulator to see what could be the problem. It turns out that it is somehow linked to the reset code in the firmware. If the DAC is not shut down and then restarted properly (i.e. it isn't given 20 seconds or more between switch off and switch on), the firmware doesn't get enough time to back up the stored functions into its EEPROM. It is instead interrupted, and asked to restart the DAC instead. But if on restart the firmware detects a possible inconsistency between what it expects to find in the EEPROM, and what is actually there, the firmware will automatically do a soft reset to the DAC in order to recover into a correct start up sequence.
I am trying out a code rewrite of the reset function so that it is split between a hard reset, which will reset all the EEPROM data, and the soft reset that will leave the sound signature settings unaffected.
I am going to need some time to give this a proper test and see if there are any side effects to this.
Best email me for now if you got an issue, until I can figure out why I am having problems with getting my browser to bring up the AoS page.
Sorry for the late reply. I had a funeral to deal with, and then also found out that the AoS website is being blocked by my browser suddenly.
I have had a look at the issue and ran it through my code emulator to see what could be the problem. It turns out that it is somehow linked to the reset code in the firmware. If the DAC is not shut down and then restarted properly (i.e. it isn't given 20 seconds or more between switch off and switch on), the firmware doesn't get enough time to back up the stored functions into its EEPROM. It is instead interrupted, and asked to restart the DAC instead. But if on restart the firmware detects a possible inconsistency between what it expects to find in the EEPROM, and what is actually there, the firmware will automatically do a soft reset to the DAC in order to recover into a correct start up sequence.
I am trying out a code rewrite of the reset function so that it is split between a hard reset, which will reset all the EEPROM data, and the soft reset that will leave the sound signature settings unaffected.
I am going to need some time to give this a proper test and see if there are any side effects to this.
Best email me for now if you got an issue, until I can figure out why I am having problems with getting my browser to bring up the AoS page.Clear your browser. It should then be fine.
There was an issue which has been sorted but the browser memory might still have it flagged
Hi Stan. I knew about your funeral, so this wasn't aimed at you right now, but thank you most kindly for replying. I think I'll go with leaving it powered up for the moment, unless there's any reason not to?
Many thanks and here's to happier times
Neds
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