3. VAC output reads 0
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Author Topic: VAC output reads 0

March 18, 2022, 06:19:51 PM
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macguy78

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VAC output reads 0
Hi it's me again. I'm having similar VAC output reading issues with my 502 as well; very low (around .130VAC) readings. I'm starting to think there may be a bad IC somewhere. Any help is always appreciated!
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March 19, 2022, 06:14:40 PM
Reply #1

JPK

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Re: VAC output reads 0
Check if you can measure the input signal on R1-right pin, against 0V.
Next, same thing on TP1
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JPK
March 19, 2022, 07:37:41 PM
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macguy78

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Re: VAC output reads 0
I’ll try these tests out today. Thanks 
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March 20, 2022, 03:53:30 AM
Reply #3

macguy78

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Re: VAC output reads 0
After reflowing the components, I was able to get a proper reading. LA502 is up and running, properly calibrated. Thanks!!
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