Quote:
Originally Posted by luRaichu
Yeah, I don't exactly feel like blowing a hundie just to debunk ONE crystal, especially when a replacement crystal probably costs less than the oscilloscope itself!
I measured various PSU voltages, just to be sure:
19.77v line = 18.77v
12.10v(A) line = 12.40v
12.10v(B) line = 12.36v
12.09v(A) line = 12.39v
160v line = 155v
11.60v line = 9.80v (measured from C559 instead of L351 because I didn't bother playing this game of Where's Waldo long enough)
|
Looks good enough to me. As I mentioned earlier, you could also trace the voltages around the board. If there's a break in the PCB somewhere, that's usually a good way to find it because voltages are stable and predictable. Also, since you don't have a scope, you won't be able to check the various waveform that the Sam's calls out. Which, incidentally, is also a good reason to have at least a basic scope. You can look at all of those little black windows in the Sam's to make sure they look right.
If you plan on doing this kind of thing any more than this one set, a scope is a pretty core tool in electronics troubleshooting