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Video instructions and help with filling out and completing Are Form 8815 Affordable

Instructions and Help about Are Form 8815 Affordable

All right so today I want to talk about a basic topic when it comes to troubleshooting some of these circuits and this is something that comes in handy if you haven't known good around so this is a machine that has no backlight on the screen and it's something I've mentioned in a couple of prior videos but it's not something that has its own dedicated video and it should because this is a really this basic concept in electronics and it's something that's gonna help you along in your troubleshooting so if let's say that we have a circuit that is it that it's supposed to create a certain amount of brightness for the screen a certain amount of voltage for the screen and it knows what the load of the screen is going to be let's say if we want to create 27 volts now the output of a circuit can actually give you an idea of what's going on with it so here I'm gonna measure backlight output at a specific point in the circuit and I get thirty nine point six volts now this is where again one of the things that really helps me is having this whole pile of stuff that works well some of it works where I can just go okay what's that supposed to be and I measure it and I have an answer and it kind of helps me with my thought process so I'm so I know that I'm supporting machine when brightness is all the way up I get 27 volts so why is my voltage 39.6 that means I should have more light right now what a lot of people will say is oh the screen must be broken or that the light got blown out...

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