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Projects, Designs, and Technical Stuff / Re: Vacuum Fluorescent Display Driver
« Last post by bostonman on Today at 10:48:53 pm »I scoped G1 and it had many more pulses than G2 and G3, so I moved forward with replacing the chip.
The good news: the new chips seems to have fixed it. Can’t say for sure, but I didn’t see digit twelve have the lit segment. I wanted to see if it displayed AUTO TRIG or AUTOOTRIG (somewhat of a true test), tried pushing the menu options, accidentally got it in count mode where it was counting pulses, so I turned off power and repowered it to get the default stage.
The bad news: when it repowered, the display may have come on for a split second (I wasn’t staring at it) and vanished. LEDs light and got a brief moment I saw a faint sign of life on the display where it showed something.
I didn’t move anything, nothing was near it to short, etc… Just a simple repower.
FL1 and FL2 measure 5.8v DC, so I’m assuming the supply blew, but don’t know why.
The good news: the new chips seems to have fixed it. Can’t say for sure, but I didn’t see digit twelve have the lit segment. I wanted to see if it displayed AUTO TRIG or AUTOOTRIG (somewhat of a true test), tried pushing the menu options, accidentally got it in count mode where it was counting pulses, so I turned off power and repowered it to get the default stage.
The bad news: when it repowered, the display may have come on for a split second (I wasn’t staring at it) and vanished. LEDs light and got a brief moment I saw a faint sign of life on the display where it showed something.
I didn’t move anything, nothing was near it to short, etc… Just a simple repower.
FL1 and FL2 measure 5.8v DC, so I’m assuming the supply blew, but don’t know why.