Yes, flux makes SMT work a breeze.
Wow. Are you sure those are the voltages you got? If so, we have a problem.
FB1, FB2, and FBP should be close to 1.25V. FBN should be close to 125mV.
Try measuring those voltages again and see if VDD+9V is still 9v. Let me know if it's not
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I also dug in a little deeper into the Max1997 data sheet, and found some more useful info - mainly, there's 2 other voltage rails besides VGH and VGL. One of them is very important and gives power to the main controller on the t-con, IC1. The voltages you got above for FB1, FB2, FBN, and FBP indicate that one (or more) of these rails has a problem and is likely pulling all of the other rails down with it.
So first thing you need to do is determine which rail is where on your t-con board so we can check and troubleshoot each one.
To do that, first locate pin 3 (DRV1) on the MAX1997 IC. Now, with your multimeter set to continuity check, you should find that one of the pins on one of the transistors is connected to pin 3 (DRV1). You'll know this when the multimeter beeps and shows a very low number (less than 2 on the screen).
Note that there are 5 transistors on your t-con: Q502 (the big one with 4 pins), Q501 (all the way to the left side, next to C523 and C524), Q504 (midway between Q502 and Q501), Q503 (below the MAX1997 IC), and Q505 (next to lower-left corner of inductor "4R7"). I'm using this picture as a reference:
https://www.badcaps.net/forum/attach...4&d=1318106711
Once you find which pin of which transistor is connected to pin 3 (DRV1), post the information here. Then repeat the same procedure above for pin 9 (DRVN), pin 19 (DRV2), and pin 22 (DRVP) of the MAX1997 IC - i.e. find the transistors to which these pins are connected to.
Next, do a similar procedure as above for VGH, VGL, and VGC - that is, connect one probe of your multimeter to VGH/VGL/VGC, and find which transistor it connects to.
All of this will give us a complete description of where each rail is located on the t-con. Once we know this, then we can test each rail's components thoroughly to see where the fault is.
This shouldn't be that much work - of course, if you think it is, then let me know. I hope I'm not giving you a headache with this stuff

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