DAC AD1862: Almost THT, I2S input, NOS, R-2R

I have put 'the DAC' together but have no sound...

This is a PCM63 board fed by the JLsound USB board, and with Sparkos opamps. When I started trouble shooting, I found 0.8vdc/offset on one output and 1.9vdc on the other, which seems wrong. When I swap the PCM63 chips left-to-right, the DC voltages/offset follow, maybe indicating something wrong with DAC chips. Does anyone have any insights?

Cheers,
Soren
 
I did try with the JLsound powered off and the DC offset was stil there. The JLsound is configured for PCM63, which is the same as AD1862...now I want to recheck the hookup.

I verified all the different voltages in the sockets before plugging in the PCM63 and opamps, as they are precious. First, I tried swapping the opamps left to right which made no difference, but swapping the PCM63s does flip the offset between the channels.
 
Thanks for the input Guys.

A good nights sleep made me spot my error, and what may have fried the chips. I use the external oscillator board for the JLsounds USB board and in my quest to keep the wiring neat, wired it erroneously from below. In my search for errors I moved to wiring to the top of of the oscillator board, mirroing my working 1862 DAC, and I just realized that in the first iteration DL/DR/LRCK/BCLK (pins 9/11/13/15) were wired to ground on the wrong side of the 20 pin connector 😳

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I feel bad having removed two pcm63 chips from this world 🙁

Cheers,
Soren
 
Me too. I can't know for sure they are dead and will stare some more at the board and triple check everything as I would also want to reassure myself before plugging in replacements, should I find them. The asymmetric DC offset that follows the chips, when I swap them, suggest they produce it ... and that I fried them.
 
Me too. I can't know for sure they are dead and will stare some more at the board and triple check everything as I would also want to reassure myself before plugging in replacements, should I find them. The asymmetric DC offset that follows the chips, when I swap them, suggest they produce it ... and that I fried them.
it is not very easy to fry them via digital inputs if the voltages have not exceeded Vd
 

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They go all the way in and with a little wiggle, I can get the DC offset to disappear, but only one side/chip will stay like that without pressure from a finger. Maybe the legs atrophied with age... Joke aside, any idea for improving the contract?