AMB Laboratories DIY Audio

[imnotwen]

Hello,

I just assembled a mini^3 and I think it failed both quiescent current check and rail splitter check.
The current I measured was ~18mA instead of ~25mA. I checked the soldering and it seems alright so I moved on.
But the rail splitter check definitely failed. The V+ V- gave ~8.7V while V- IG gave ~8.3V.
I have not turned it on yet. Can anyone give me some suggestion here?

THANKS!

[amb]

Looks like U3 is dead (TLE2426). Replace it first and run through the checks again.

[imnotwen]

oops... answer my own question.

After a night waiting, I measured it again in the morning and everything is fine! What a miracle!
Maybe something was overheated right after all the soldering? I am not sure.
Anyway, everything works well now and I am using it now. This is great!

[amb]

More likely a cold solder joint, which may be intermittent...