Final Voltage Check Failure - Negative terminal 1

[Sdocherty]

Hi,

I recently completed the crack kit, and all of the resistance checks looks good according to the numbers stated in the guide.

When I first powered up the amp to do the final voltage check, I did not realize that the 12/13U cap was backwards.  Some smoke came out, and I replaced all three of the 220uf caps with new ones.

Now the voltage at terminal 1 reads -1.29VDC, where it starts at ~0.08VDC prior to connecting the power cord. None of the other terminals from 1-10 give the correct voltage.  I also noticed that the LEDs around the 9 pin do no illuminate.

I went through the circuit and double checked all the solder connections, and measured the resistance a long the ground path as described in the stickied post and all points appeared to be in spec.

Any advice on how to fix the issue would be appreciated.

[Paul Birkeland]

Can you repost your image, as it did not come through?

Getting a look at your build would indeed be very helpful. The LEDs will not illuminate if the voltages on terminals 1-5 are near zero.