The attached pics are from a Control Board in a Tanning Bed. I have previously repaired this type of board. Normally it is matter of replacing any one of the 18k ohm resistors. Well, on this particular board, none of the resistors tested bad. Below the array of resistors there is a series of LED (which were conspicuously not lit when there was power to the board).
I measured resistance across the "led" and they all read 11k ohms with the exception of #16 (see pic).
I am 20 years removed from component level troubleshooting. Reading 11k ohm confused me as I didnt expect that reading.
There are no identifying marks. I thought I was looking at passive LED now I am not sure. There are no schematics available so I am probing around testing components and trying to signal chase (power).
Sorry if I am babbling...any help would be appreciated.
I measured resistance across the "led" and they all read 11k ohms with the exception of #16 (see pic).
I am 20 years removed from component level troubleshooting. Reading 11k ohm confused me as I didnt expect that reading.
There are no identifying marks. I thought I was looking at passive LED now I am not sure. There are no schematics available so I am probing around testing components and trying to signal chase (power).
Sorry if I am babbling...any help would be appreciated.
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