I've been working on this 4K tv, it starts but turns of and off, the logo never comes up. I've done a lot of TV's but this one was a mystery. Seemed like a main board issue, replacing that with one I am 98% sure is good, TV acts the same. I started looking at the power supply and I'm trying to figure out which pins are supposed to be putting out what. I've never seen the attached diagram style before, can anyone assist? I downloaded the service manual but it doesn't show the voltages at the various connectors.
I'm getting 8v on several pins, just for a fraction of a second the voltmeter reads 13v and then it drops. The voltmeter is good, the ground is good, could this be the PS is dropping under load or am I introducing a measurement error? Thanks for any input.
I'm getting 8v on several pins, just for a fraction of a second the voltmeter reads 13v and then it drops. The voltmeter is good, the ground is good, could this be the PS is dropping under load or am I introducing a measurement error? Thanks for any input.
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