My variac doesn't have an amp meter, nor do I have an extra multimeter to test amps while testing B+, if I would be using my multimeter to measure B+ voltages, if I could find another tool that I can plug into that measures amps etc.. at the same time, that would be great.. Back to B+ subject, Sorry for my lack of knowledge, I'm starting to get the hang of all this, but I don't know where I would connect my multimeter to measure B+ voltages as I crank up the variac.. I'm looking at the Sams LV power supply board and it shows numbers, some with voltages (bottom of board pic), I assume those are voltage check points.. Not sure which meter probe to connect to where.. I've never did voltage checks throughout circuits yet.. Also if I have to connect multimeter on bottom of pc boards to do voltage checks, I think it would be impossible to check while powered up and everything connected, but then again, I think where I see the voltage points on bottom of board image, and I look at the top board image, it looks to show metal stubs coming out a little, enough where alligator clips could clamp on.. Some have an "X" near them looking at the actual board in the TV set... If I'm understanding all this correctly, I assume red lead from tester goes to test point on board and black to metal of chassis? Also number one (390v) on Power supply board I'm assuming is a voltage check point for B+ ? I don't have an HV prob yet, so that would be out of the question at least for now..
I came up with this homemade lamp in series from parts bought at Home Depot.. If I can come up with something like this or buy something that has an amp meter on it that has an outlet that would be great.. Also another option, using this with a socket outlet adapter, and use a second multimeter to test current..
Thanks Findm-Keepm for all your help..