Unit will not power up.There's 12 volts at the power supply transistors.The vertical card which I believe is the called the "driver" card where the tl494 lies I believe is the problem.I have no voltage on any of the pins of the tl494.On the main board where the card plugs in it says b+ and there is 12 volts there so I believe the card is getting power but it isn't reaching the tl494.I just wonder if im troubleshooting correctly and perhaps there is a failed part in the driver board preventing the tl494 from operating.
Thanks Jon
Thanks Jon
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I checked all the resistors on the driver board that lead to the 494.Perhaps its one of the transistors on the driver board although I'm unaware how to check them.Something is causing a break between the driver board pins where it enters the main board and the 494.Where it says b+ on the main board where the driver plugs into can be used as a reference to prove the driver board is getting power?
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