Oo... 6 beep! I think that one was added specially to cover an error with the -12v (negative 12v) failing. It was a relatively common issue with v8.12, due to an undersized capacitor (spec'd for 16v, but physically too small, and loved to crack) that shorted the -12v rail.
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Oo... 6 beep! I think that one was added specially to cover an error with the -12v (negative 12v) failing. It was a relatively common issue with v8.12, due to an undersized capacitor (spec'd for 16v, but physically too small, and loved to crack) that shorted the -12v rail. v8.14 was the board that started getting the firmware that addressed (raised a fault for) the issue with v8.12, but the capacitor was no longer a problem on that board. It did, however, use the same DC-DC converter design that v8.12 used - and it was problematic.
In your case, the -12v DC-DC converter may have died. How dirty do you want to get your hands? I made a significantly improved version of the converter circuit (based on a MUCH simpler chip, designed for the task... can't believe we didn't know about that part in 2014 when this circuit was being developed). I haven't listed it for sale, but if you're willing to get your hands dirty, I might just post them up and make a guide for it.
Can you add a photo of your board, and I can point to where to measure voltage?
Oo... 6 beep! I think that one was added specially to cover an error with the -12v (negative 12v) failing. It was a relatively common issue with v8.12, due to an undersized capacitor (spec'd for 16v, but physically too small, and loved to crack) that shorted the -12v rail.
In your case, the -12v DC-DC converter may have died. How dirty do you want to get your hands? I made a significantly improved version of the converter circuit (based on a MUCH simpler chip, designed for the task... can't believe we didn't know about that part in 2014 when this circuit was being developed). I haven't listed it for sale, but if you're willing to get your hands dirty, I might just post them up and make a guide for it.
Can you add a photo of your board, and I can point to where to measure voltage?