So finally have the original brand:
Panasonic TE-series... replacement given from Panasonic as CX series (EEFCX1A470R) or 100U/10V (EEFCX1A101R)
@jean-paul: the Panasonic TE-series are listed on the WADAI 27 BOM. As PAN TE Tantalum. IMHO to replace any newer & better who finally are accepted by the PCM1702.
SP-CAP: The Conductive Polymer Aluminum, Electrolytic Capacitors, Surface Mount Type CS/CT/CX series not mentioned as Tantalums..
Also the SC-CAP no any longer recommended. In total 3 per PCM1702 x 8 PCMS1702's as 24 to replace and hopefully I get the culprit.
TPC: as high leakage 🙁
SP-CAP: The Conductive Polymer Aluminum, Electrolytic Capacitors, Surface Mount Type CS/CT/CX series not mentioned as Tantalums..
Also the SC-CAP no any longer recommended. In total 3 per PCM1702 x 8 PCMS1702's as 24 to replace and hopefully I get the culprit.
TPC: as high leakage 🙁
The BOM is not on that picture.
All that 30 year old polar capacitors probably all have long been superseded by better quality versions. Maybe it is a good idea to compare the specs of the old ones with regards to some relevant properties and choose a new part on that specific improved properties. That would be revolutionary to cap rollers 🙂
"Accepted by the PCM1702" ? It is an IC not a person 😉
All that 30 year old polar capacitors probably all have long been superseded by better quality versions. Maybe it is a good idea to compare the specs of the old ones with regards to some relevant properties and choose a new part on that specific improved properties. That would be revolutionary to cap rollers 🙂
"Accepted by the PCM1702" ? It is an IC not a person 😉
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The pitta is, nothing given what the PCM1702/4 brings them to singing or malfunctioning. As the internal LDO & servos accepts.
So PNP and see what happens as not engineering alike.
So PNP and see what happens as not engineering alike.
That is not a technical approach but based on emotions. In such cases advices are never good enough and no new device can replace those emotions either. That is an entirely different world in which I happen not to live in so good luck with repairing the device.
BTW coincidentally there is another thread on about the same and I recalled having to replace the bloody PCM1702 many times. Because of that I avoided devices with them. They themselves may very well be the cause certainly when the device is always on. DAC chips are not designed for decades of 24/7 service. Quite contradictory expensive devices have their DAC chip failing because of this 24/7 powered on reasoning.
So chances are highly likely you will have to fork out many Euros finding new PCM1702 all with the same datecode from those reliable Ebay brokers 🙂 somewhere far in Asia or............horror.... find a new sigma delta DAC.....
BTW coincidentally there is another thread on about the same and I recalled having to replace the bloody PCM1702 many times. Because of that I avoided devices with them. They themselves may very well be the cause certainly when the device is always on. DAC chips are not designed for decades of 24/7 service. Quite contradictory expensive devices have their DAC chip failing because of this 24/7 powered on reasoning.
So chances are highly likely you will have to fork out many Euros finding new PCM1702 all with the same datecode from those reliable Ebay brokers 🙂 somewhere far in Asia or............horror.... find a new sigma delta DAC.....
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@jean-paul
"DAC chips are not designed for decades of 24/7 service. Quite contradictory expensive devices have their DAC chip failing because of this 24/7 powered on reasoning."
YES, in addition, closed box.
And now after the end of the tunnel, one showed glitches so I am searching for a replacement/repair part.
Hp
"DAC chips are not designed for decades of 24/7 service. Quite contradictory expensive devices have their DAC chip failing because of this 24/7 powered on reasoning."
YES, in addition, closed box.
And now after the end of the tunnel, one showed glitches so I am searching for a replacement/repair part.
Hp
As expected and also all need replacement. Not just 1. Variations in hours may result in audible differences and of course the next one failing 3 months after repair of the other channel.
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Hmm, I would be happy to get a single genuine for replacement.... than more to come as you suggest
If I were you and very precise in believing details then I would look for the complete number all guaranteed new/original with same datecode and batchnumber. Otherwise a new device seems a better choice.
For sure best with equal date-code & batch 😀 if those exists.
I still love spline based oversampling than FIR based (sound wise). Curious that spline based oversampling went fishing.
I still love spline based oversampling than FIR based (sound wise). Curious that spline based oversampling went fishing.
If you have heard all recent DACs and none did satisfy then finding PCM1702 is the choice. And a nice sturdy power switch.
This issue happened even as I have a dual power filter (for all audio gear) and power switch afterwards...
Nothing to bet, as for 20 years the WADIA Dac was immediate switched of as the dual mono tube power amp.