Hi Guys! Working on this 65 inch Samsung. It's my dentist's so it probably sees a lot of run time. It isn't turning on. Checking vs,va,vsc, and ve. The voltages are there at first and it must be going into protection. I am using Samsung fast track guide for reference. I found that if I unplug Y-Sus board that I have the voltages there which rules out SMPS problems. I have no boot melodies or picture. I tried unplugging buffers and this had no change. The led on the main board acts funny. With the boards all plugged in the led comes on but then starts to fade and then nothing. With y unplugged it acts normal and I can get a click with pwr on on the remote and then have voltages. Also there is no test jig that I see on main to activate the power and logic test board patterns. Thanks for all the help over the years. This is my go to with unsolvable problems. This y board is very pricey. Some of these parts are nla. Funny built in 2013 march.
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