Rank: Advanced Member
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Joined: 5/6/2009(UTC)
Posts: 38
Location: san francisco
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Non BP:
I initially installed the LED's in backwards and powered up. I noticed the LED's weren't lit, double checked the polarity, reinstalled. Turned it on again, but still not lit. I have the VR's setup per the manual. I get no voltage at the output. Did I toast the LED's? There's no other indication of blown parts.
BP:
On the VR4 side, D5 doesn't light up. It's installed correctly. I think I may have blown one or more of the VR's as a couple of them appear shorted out. I had no idea they were so sensitive as I've never had a problem with any before. Sounds like others have had problems though so I suppose that could be a culprit?
Besides LED's and VR's should I be looking at anything else that might be bad? The QN/QPs perhaps? Or the opamaps?
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Rank: Administration
Groups: Administration, Customer
Joined: 10/24/2006(UTC)
Posts: 3,979
Location: Nashville, TN
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Make sure you have not swapped transistors.
The LEDs could indeed be dead.
Measure the voltage across them.
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