EZ1073 Build

Help Support GroupDIY:

FelixT

Member
Joined
May 6, 2021
Messages
16
Location
London
So just reflowed everything and gave another check to all the joints, and to make sure there are no shorts on lead ends etc. I also pushed the op tx connector all the way down finally. Still get no relay click, and while the sound is better through the unit it is still a bit quiet and crunchy, which I would assume would be sorted with proper biasing.

the worrying thing is that there is no relay click and the voltage between TP1 and TP2 is the full 16VDC. This has to symptomatic of the root of the problem.
Anyone have any ideas why the relay wouldn’t be clicking?
 

Joeblutak

New member
Joined
Jul 24, 2021
Messages
2
Location
London
I built the free standing version of this kit and found it relatively easy to signal trace audio through it. You’ve probably checked this but bear in mind that a low level and trebly output can be the result of connecting a transformer balanced output to an unbalanced input, but forgetting to earth the negative side of the transformer? I was caught out by that one!
Hey Stevie, I was just wondering how one would go about testing this? I can't seem to find where I would test the earth on the negative side of the transformer on the schematic!
 

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