243RE: [stationpro] Re: LCD does not display anything
- Sep 17, 2011
Tom, Your symptoms suggest a bad solder connection. If the LED for TX2 blinks as you push on the LCD, then that almost surely is an intermittent connection to the +5V supply. The relevant +5V traces on the front panel PCB go from pins 24-25 of P307, over to C310, and then to pins 3,4, and 14 of U301. Also, the +5V feed to the LCD goes through R316 (a 10 ohm resistor) to pin 15 of the LCD header J305. I suggest you check all those solder joints, as well as all the joints on the LCD header (both ends). Since pushing on the display causes an intermittent problem, I’d guess there’s an unsoldered connection somewhere, or a cold solder joint. Let me know what you find.
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