Hi Jonas...
sorry for your synth. It looks like a failure in the numeric keypad ...
or ??
One question : what happens when you DO NOT press the 7, 8 and 9 keys at
turn on ? It starts normally ?
What is the voltage at the power supply output plug ? It must be _at
least_ 12 V unloaded , "+" in the center. Some people on this forum had
issues with the supply, either Yamaha or aftermarket, leading sometimes
to weird behavior of the synth. For aftermarket supplies, minimum
voltage rating must be 12 V DC (loaded !), minimum current rating 700 mA
(more, say 1 A, can be better, do not try less....). Do not use supplies
with more than 15 V DC to avoid internal voltage regulators overload.
The external supply is not regulated, only rectified and filtered with
some capacitor. If one diode has failed or if the capacitor leaks the
voltage could collapse when it is loaded by the synth.
I don't know what is the price range for a second hand AN1x today... If
yours is in good cosmetic condition you can give it to Yamaha service
for a quotation, then decide if it's cheaper to have it repared or buy
another one, and keep the first as a spare parts reserve...
Cheers.
J.F.
Jonas Öhlund a écrit :
>
> Hi again,
>
> I have now tried all of your kind inputs regarding my AN1x that stopped
> working after replacing a white key and the battery.
>
> I've:
> - Started the thing up without backup battery, held down 7,8,9 while
> pressing the power button. Like a lot of you suggested. It gives me the
> usual welcome message and then "Lo Bat". I can't access the factory reset,
> numeric keys and knob parameter group buttons doesn't seem to respond.
> - Reseted the small board that sits up on the two white posts. Like Dowd
> Bailey suggested - http://www.youtube.com/watch?v=DVa5SUTNDcg
> - Did a momentarily short-circuit like ∗Jeff ∗suggested. Still nothing..
> - Removed all the cables and put them back in. Still nothing..
> - Checked the new battery with a voltmeter, gives me 3,3 V and it's a
> CR2450.
>
> I must have fucked something up when I dissembled it the first time.
> Do you
> think it would be worth turning it in to authorized yamaha service or
> would
> it be cheaper to buy a used but working AN1x? There must be a broken cable
> or connector somewhere, but I don't know how to find it.. Can't check
> every
> cable with a voltmeter?!
>
> Thanks again for your help anyways. Pretty amazing you can find people
> with
> this much knowledge over the internet these days, even though it didn't
> work this time.
>
> Regards,
> Jonas
>
> [Non-text portions of this message have been removed]
>
>