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I have yet to crack the top open. I'm guessing is the joint between the two main PCBs. That was a common failure on those boards - the edge connector they used didn't cut it - so the repair was to hard wire/solder across every 1-1 connection in the edge connector. I'm guessing one of those went bad. Problem description is that the LED display gets one VERY bright character and the rest are blank.




Yours at least boots up then?

I had to do that solder thing on mine. On yours, every now and then, whenever it feels like, the thing freezer playing notes as if you laid a piece of 2x4 across the keys, right?

Before I soldered the pins I used to pop the keyboard out, pull that ribbon cable, spray it well with tuner cleaner and reseat everything and that worked for a while, but eventually.... WAAAAAAAAHHHHH! So I did the tedious solder job. Wire wrap tool, low voltage gun... grrrr....




I paid Al Nalli music in A2 to do that for me a couple years after I bought it. The repair has held up 20+ years until this February, if that is in fact the case.