JYE Tech Forum

Is there a definitive way to determine if there's a short? I wouldn't mind getting the first unit working, too. I already verified that U5 receives the correct voltage on pin 8. Well, you now have one working Shell and one non-working Shell, both probably with the same F analog board. So if it were...

I tried new caps in the original unit with the overheating U5. No change. So, I think that one is definitely a faulty voltage regulator. Possibly, but a short somewhere downstream could also cause the overheating. Is there a definitive way to determine if there's a short? I wouldn't mind getting th...

I tried new caps in the original unit with the overheating U5. No change. So, I think that one is definitely a faulty voltage regulator.

SOLVED! It appears my second unit shipped with some bad electrolytic capacitors. I have replaced them with some others I had on hand, and everything is working as expected. I'm curious if my first unit had the same problem, so I will try the same fix there at some point - though with the heat issue ...

The vendor I purchased from (Banggood) replaced my unit. I have assembled the new one and am still having issues. U5 no longer gets extremely hot, so I think that issue is resolved. However, I still see incorrect voltages. At the very least, I now get a negative value on V-, but it's not a correct o...

Hello... I am getting incorrect voltages at the reference points, including small positive values at V- and AV-. Additionally, U5 gets very hot very quickly. SW1 is set to GND. I have resoldered all of the joints on the analog board to be certain they are good. C8, C10, C11 all appear good. Is it co...