SSR03-15V LM431 Volt too low

[eloes51]

Hi,

SSR03 board with OP, the rest soldered itself.
Plus volts 13.4V, minus volts 10.4V.
OP From PIN6 + V -6.5V
OP from -V + 3.5V.

All components checked twice.
Maybe components defective?

Please help!! :-(

[peranders]

Are the sense inputs connected? Have you tin drops on J1-4?

[eloes51]

Hi,

Thanks for the tip.

I did not think that the AGND have no mass !!!