Dear community, I have come for some sound advice.
I have a Sonic Frontiers CD1 with the left channel creating a wooshing noise heard mostly through the tweeter because of the higher frequency. The noise only happens when music is playing and is volume dependent, gets louder as the volume is increased/decreased. The music is playing flawlessly, with overlaying sound rushing or whooshing, only way I can describe it. Several months ago I did a clean and lube of the infamous Philips CDM12.4 tray/pickup as the grease was dried up. Has been working flawlessly since and this issue just happened out of nowhere. I thought it could be a dirty connection in the left channel output relay. I replaced this and still have the issue. Could this be the DAC. If it is I am kinda screwed as that is DAC is no longer available. Any help troubleshooting this stunning sounding player and keeping it out of landfill would be much appreciated.
I have a Sonic Frontiers CD1 with the left channel creating a wooshing noise heard mostly through the tweeter because of the higher frequency. The noise only happens when music is playing and is volume dependent, gets louder as the volume is increased/decreased. The music is playing flawlessly, with overlaying sound rushing or whooshing, only way I can describe it. Several months ago I did a clean and lube of the infamous Philips CDM12.4 tray/pickup as the grease was dried up. Has been working flawlessly since and this issue just happened out of nowhere. I thought it could be a dirty connection in the left channel output relay. I replaced this and still have the issue. Could this be the DAC. If it is I am kinda screwed as that is DAC is no longer available. Any help troubleshooting this stunning sounding player and keeping it out of landfill would be much appreciated.
Could be a D/A converter chip or its power supply. Check solder joints.
https://www.diyaudio.com/community/threads/ultra-analog-d20400-datasheet.59868/
https://www.diyaudio.com/community/...s-pcb-fix-for-ultra-analog-dac-d20400.377627/
https://www.diyaudio.com/community/threads/ultra-analog-d20400-datasheet.59868/
https://www.diyaudio.com/community/...s-pcb-fix-for-ultra-analog-dac-d20400.377627/
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Thanks for responding Lampie519! I am concerned that it could be the Ultra Analogue D20400A chip that is failing. The solder joints look good, but I will check power supply. If it is the D20400A chip then I probably am screwed. My next option will be to hit Partsconnexion, near where I live, who are the designers of this unit. Even if they had the chip, which I seriously doubt, the cost could be off putting. How much do I sink into a unit that parts have become obsolete.
One thing that could be just a coincidence... When this failure occurred is when I played an HDCD disk. I hardly ever play HDCD's (the unit has that capability) since not many of those exist in my collection. Coincidence or not?
One thing that could be just a coincidence... When this failure occurred is when I played an HDCD disk. I hardly ever play HDCD's (the unit has that capability) since not many of those exist in my collection. Coincidence or not?
I don’t think it is 1 chip but a board with multiple components, look at the images in the threads.. maybe here is a joint issue
BTW in case s HDCD is plyed there is a switch activated to lower/increase the gain of the buffer stage following the converter chip. This switch could be defective and introduce noise. Do you have equipment to measure this ?
You will need something to measure in order to trouble shoot properly.
Not likely that the relay is the cause. But it looks that this is the switch i was talking about, i just thought it could be a transistor or fet switch instead causing the error. Now you better check the hidden board in the box called d20400a
Not likely that the relay is the cause. But it looks that this is the switch i was talking about, i just thought it could be a transistor or fet switch instead causing the error. Now you better check the hidden board in the box called d20400a
Checking that d20400a is getting above my pay grade. So you are saying the relay is not the issue, but a transistor or get?
I was not sure if the switch was mechanical or solid state. A relay can go bad but could be checked easily by just tapping on it lightly with a screwdriver or pencil (handle not the metal metal part)
I sprayed freeze on the d20400a and the noise went away and comes back after warm up. If I give a solid press in the lower right corner of the DAC it too clears up the issue. I decided to reflowed the solder joints on and around the components of the DAC. All good for about ten minute of listening and then the dreaded noise appeared again. It has to be the DAC module.
So you have narrowed down the source of the error , great !
Find someone with good skills and epuipment in your area so it can be fixed !
Find someone with good skills and epuipment in your area so it can be fixed !