Search found 18 matches

by gkmaia
Fri Dec 07, 2018 4:33 am
Forum: HELP!
Topic: D-50 sounding distorted, noise & creaking
Replies: 22
Views: 4651

Re: D-50 sounding distorted

madtheory wrote:The DAC is actually in two parts, a 16 bit DAC and a ladder DAC for the other 4 bits (20 bit in total). You'd need to check the components in the ladder DAC.
IC10 = 16 bit DAC
IC11 = 4 BIT DAC

Any idea how to test these ICs?
by gkmaia
Fri Dec 07, 2018 4:28 am
Forum: HELP!
Topic: D-50 sounding distorted, noise & creaking
Replies: 22
Views: 4651

Re: D-50 sounding distorted

Mooger5 wrote: I believe there should be a +5V pulse signal at TP1 and 2...
I am getting a +4V on each TP1/2
by gkmaia
Thu Dec 06, 2018 6:10 am
Forum: HELP!
Topic: D-50 sounding distorted, noise & creaking
Replies: 22
Views: 4651

D-50 sounding distorted, noise & creaking

Hi, I just toke my D-50 out of storage after 20 years and the sound is completely distorted, noise & creaking. Software test - Reverb and Chorus passed - All buttons and sliders passed - D/A Adjustment. VR1 on the main board adjusted for minimum distortion done Hardware - weld - Touched up all welds...