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First time F5 build
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Old 15th March 2019, 02:52 PM   #91
rayma is online now rayma  United States
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Join Date: Apr 2011
Quote:
Originally Posted by Trismos View Post
I may indeed! I will check it tomorrow. Getting to be a pain to pull that board in and out now. Thx for the hint.
You don't have to remove the board, the flat side of the LED is the cathode, which should go to ground.
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Old 15th March 2019, 02:53 PM   #92
rayma is online now rayma  United States
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Join Date: Apr 2011
Quote:
Originally Posted by Trismos View Post
I may indeed! I will check it tomorrow. Getting to be a pain to pull that board in and out now.
You don't have to remove the board. The flat side of the LED is the cathode,
which should go to ground.
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Old 15th March 2019, 04:54 PM   #93
Trismos is offline Trismos  Canada
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Join Date: Feb 2012
Location: Yellowknife
Quote:
Originally Posted by rayma View Post
You don't have to remove the board. The flat side of the LED is the cathode,
which should go to ground.
But I will have to pull it to remove / replace the LED. Which should be a fine pain in the butt.
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Old 15th March 2019, 05:43 PM   #94
rayma is online now rayma  United States
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Join Date: Apr 2011
Quote:
Originally Posted by Trismos View Post
But I will have to pull it to remove / replace the LED.
But first determine what the problem is.
See if LED is in the right polarity, and measure the resistor.
If the LED is reversed, there will be 25V across it,
since no current flows in the series resistor.

If your DVM has a diode test function, it can light up the LED,
if the positive meter lead is on the LED's anode.
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Old 15th March 2019, 05:53 PM   #95
Trismos is offline Trismos  Canada
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Join Date: Feb 2012
Location: Yellowknife
Quote:
Originally Posted by rayma View Post
But first determine what the problem is.
See if LED is in the right polarity, and measure the resistor.
If the LED is reversed, there will be 25V across it,
since no current flows in the series resistor.

If your DVM has a diode test function, it can light up the LED,
if the positive meter lead is on the LED's anode.
See? Besides just getting to put together a great amp, I get to learn things. Thanks so much for your help! Will test this out tonight.
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Old 16th March 2019, 02:16 AM   #96
Trismos is offline Trismos  Canada
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Join Date: Feb 2012
Location: Yellowknife
Quote:
Originally Posted by rayma View Post
But first determine what the problem is.
....If your DVM has a diode test function, it can light up the LED,
if the positive meter lead is on the LED's anode.
The LED was in backwards. Tough little sucker to get out of there as well. Ended up breaking it so I could work one lead out at a time.

So I see I've essentially stepped into jakesnake1's thread on his build. I will create my own now and post some pics. I have pretty much everything to finish as well as some questions of course. Thanks for your help here rayma.
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