So, I have always used 3V 1W 3535 LEDs for backlight replacement. I have both the small pad anode and small pad cathode type.
Just opened up a Vizio that uses the same size LED, but measuring the good ones, seems they're 6V, by then I had already replaced all 8 bad LEDs with 3V. Is that a problem?
Yes, If the logic board is looking at "hard coded" voltage differential, the backlight might not turn on.
Yes, if the current is controlled using the "hard coded" / expected voltages assuming 6V drop, then it's a problem.
But.. don't these TVs drive current based on measurement across known precision sense resistor?? So if it lights up, should be oK??
Curious to get experts thoughts.
Thanks
Just opened up a Vizio that uses the same size LED, but measuring the good ones, seems they're 6V, by then I had already replaced all 8 bad LEDs with 3V. Is that a problem?
Yes, If the logic board is looking at "hard coded" voltage differential, the backlight might not turn on.
Yes, if the current is controlled using the "hard coded" / expected voltages assuming 6V drop, then it's a problem.
But.. don't these TVs drive current based on measurement across known precision sense resistor?? So if it lights up, should be oK??
Curious to get experts thoughts.
Thanks
Comment