marrantz diy dac

[bull041161]

HELP i have just changed caps on power supply and those 2 opamp caps and its buzzing and distorted any idea what i have done wrong

 

[bull041161]

I have only just noticed that i ordered and then fitted 16v 4700uf instead of the 25v 4700uf and when i switch the cd player on and turn the amp up the RIGHT CH is badly distorted and the LEFT CH does not work at all so i put the old power supply caps back in but still the same. Do you think it could have done some damage someware else

 

[Fidelity Audio]

Whoops!

The caps should not have caused the other problems. Measure the voltages on pin 4 and pin 8 of both opamps. You may be missing a voltage. Look for +/- 12V.

Brent

 

[bull041161]

CHEERS brent thanks for help simon as been over tonight but still a broken cd player. He will no doubt fill you in what he as tried but looks like the DAC may have gone can i still buy them

 

[Fidelity Audio]

Oh

I'll have a word with him to see what he found. Did you take the pcb out and check all the solder and print?

Brent