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post #346 of 349

Yikes, rereading my post makes me wonder what I was doing when I typed that mess out.  Anyway, I don't know why I didn't actually check voltages, I'll do so tonight and report back.  Thanks!

post #347 of 349
Quote:
Originally Posted by tomb View Post


I'm not understanding how you worded your post. What is the difference between "5v" and "5v tp?" Aren't they both the same test point? Forget about "shorted," what is the actual voltage to ground that you measure at those points?

If the "-5V" test point does not measure -5V referenced to ground, then something is wrong with U7, the voltage-inverting charge pump.

 

I finally got a chance to take a look and a few of the voltages were completely messed up.  I replaced the various parts to get the voltages reading as expected and everything is working as it should.  I appreciate your help, I had been away from working on this stuff awhile and I completely spaced checking the voltages.  Thanks for the assist!

post #348 of 349
Thread Starter 
Quote:
Originally Posted by snapper96 View Post
 
Quote:
Originally Posted by tomb View Post


I'm not understanding how you worded your post. What is the difference between "5v" and "5v tp?" Aren't they both the same test point? Forget about "shorted," what is the actual voltage to ground that you measure at those points?

If the "-5V" test point does not measure -5V referenced to ground, then something is wrong with U7, the voltage-inverting charge pump.

 

I finally got a chance to take a look and a few of the voltages were completely messed up.  I replaced the various parts to get the voltages reading as expected and everything is working as it should.  I appreciate your help, I had been away from working on this stuff awhile and I completely spaced checking the voltages.  Thanks for the assist!

 

Glad it all turned out OK. :)

post #349 of 349

I just completed mine... Just a few minor issues... and after two hours of checking voltages and soldering a few components again, I am up and running. Easy build... Would suggest this for anyone. 

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