Hi all!
I'm having trouble with an Audio synthesis DA-X. It's not locking on anything. There is an,,,? error light that comes on when there is no signal and after that goes out it's supposed to lock but the 44.1khz led keeps blinking and there is no sound. I traced the digital signal all the way through the cs8412 input decoder and to the input of the pmd100 but there is nothing on left and right outputs. As soon as I turn the dac on both outputs measure at about 5ohms to ground but both soft and hard mute pins are low. I was wondering if it was somehow possible it was accidentally switched to the maximum attenuation.
I'm having trouble with an Audio synthesis DA-X. It's not locking on anything. There is an,,,? error light that comes on when there is no signal and after that goes out it's supposed to lock but the 44.1khz led keeps blinking and there is no sound. I traced the digital signal all the way through the cs8412 input decoder and to the input of the pmd100 but there is nothing on left and right outputs. As soon as I turn the dac on both outputs measure at about 5ohms to ground but both soft and hard mute pins are low. I was wondering if it was somehow possible it was accidentally switched to the maximum attenuation.
Sounds like the incoming digital signal is not 'locked' by the CS8412....Connect the DA-X to another digital source to verify where exactly the issue originated from.
Would it still pass the selected input through the cs8412 to the digital filter if this were the case ?
I scoped the output of the cs8412 an the input of the pmd100 and the signal was present but nothing on the outputs.
I scoped the output of the cs8412 an the input of the pmd100 and the signal was present but nothing on the outputs.
Are all the necessary signals present on both chips and what is the state of pin25 on the cs8412?
I checked all the pins of the pmd100 and they seemed OK according to the manual for this chip (I don't have one for the dac itself).
I will check the cs8412 on Monday.
I will check the cs8412 on Monday.
Pin 25 on CS8412 is low. But I do have Error 0, 1 and 2 high which indicates "No lock"...
I'm not sure what RXP and RXN (receive positive and negative) are for but I only have data on RXP and nothing on the RXN pin.
I'm not sure what RXP and RXN (receive positive and negative) are for but I only have data on RXP and nothing on the RXN pin.
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I do manage to get a lock from my streamer although it takes some time. What is strange is that the 3 error pins are still high indicating "no lock" and also it the frequency pins indicate 32KHz (even if it is still the 44.1K led that is lit) against 44.1Khz when connecting a cd player.
Locking and frequency indicator issues strongly point to CS8412 being faulty. Downstream ICs (PMD100 or DAC) are not involved in locking or frequency indication.
Yes that's what I was starting to suspect as well. It would be an upgrade anyway to replace it with the cs-8414.
I completely forgot I had another cs-8412-cp in stock. I swapped it out but unfortunately the problem is exactly the same with the second chip... Must be something else wrong.
Then it may be something wrong with the SPDIF/optical input circuit. But without schematic I'm just guessing. Is the problem with both coax and optical?
I got a Krell KAV-300cd out that has some trouble but works on the digital outputs and tried optical and coax and both lock just fine with the da-x but nothing with the coax outputs from either a cec tl2, tl5100z or rega planet...
Ok, just to be clear with Krell KAV-300cd as source (either coax or optical) you get sound output from DA-X but not with other sources? If this is the case then there quite likely is something wrong with receiver circuit (SPDIF/optical input). Without schematic a photo of the receiver circuit would be useful.
Yes I managed to get sound with the krell on both optical and coax and also with my steamer but not with two other cd players.
What is the voltage at pin 23 (M0) on the CS8412?
If it's +5V, please lift this pin from the socket and connect to Gnd.
Lift pin 11 and pin 12 from the socket and leave these 2 pins unconnected.
Check and report back the status of the 3 error pins and if there is audio signal.
If it's +5V, please lift this pin from the socket and connect to Gnd.
Lift pin 11 and pin 12 from the socket and leave these 2 pins unconnected.
Check and report back the status of the 3 error pins and if there is audio signal.
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