Help needed... Spark when making voltage check with Speedball [solved]

[hwaitung]

I have done the stock build of Crack and everything is fine and it sounds wonderful.

After I installed the Speedball upgrade, I plugged it in for voltage check. Everything looks normal at first, the tube lights up all LEDs on the speedball lights up, so I proceeded to test the voltages. The first 6 terminals are within spec but when I probe terminal 7, I got a spark! It seems to be dead now. (I suspect that I accidentally shorted a neighboring wire during the probing)

I have unplugged it now and the fuse seems intact and there are no obviously burnt components. Are there any suggestions on how to proceed?

Thanks in advance!

 

[Doc B]

Best bet at this point is to start the voltage checks over. Let us know any that are off from the numbers in the manual.

 

[hwaitung]

Thanks for the quick reply. Somewhat out of my expectation. It actually measures alright the 2nd time. Here are the measurements.

Terminal
1 - 74.6
2 - 164.6
3 - close to 0
4 - 164.4
5 - 77.7
6 - close to 0
7 - 99.8
8 - 0
9 - 102.2
10 - close to 0
11 - close to 0
12 - close to 0
13 - 164.6
14 - close to 0
15 - 183.2
20 - close to 0
21 -202.9

Now checking TRS...

 

[hwaitung]

All working finally. Thanks again Doc B.!

Here are some photos...

 

[Doc B]

Though it may seem like it by reading some posts here, often as not when you short a couple of pins together no damage occurs. So it's always worth checking voltages first to see if anything broke.