Arcade Collecting > Restorations & repair
BBH 2 - LED Sign not working
Rocketeer2001:
Good news everyone!
I removed a couple of the questionable capacitors to test them (C40 and C44) and they were fine when compared to the same type of caps at the other end of the board, so I put them back on the board.
After doing this, the watchdog chip (U25) was now showing constant 5.8v on pin 7, and now I was getting a flashing Status LED, but still no scrolling letters on the sign.
As a last resort, I took my hotair reflow station to the board and reflowed the solder on the 3 big IC chips. I tossed the sign in the machine and it works!
Must have been a cold solder joint somewhere, or maybe one of the chips has an internal fault that melted back together. Not sure, but I'm happy with the results!
lilshawn:
:applaud: :cheers:
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