Good afternoon,
Glad for advice to get my 2nd hand keyboard working!
Model CTK501, bought from Ebay (perhaps bad idea!): indicator light not on.
Packaging was not great but no obvious damage or other symptoms.
Seller positive it works; sent photo with keyboard light on.
9V power adapter works - light on, tested by PC shop today.
That has 2 pin connector between lead from adapter to dc probe to device.
Believe it reverses dc power by inserting pins 180 degrees round. But unclear which way gives positive to central probe?
(Probe is very narrow and not tight in keyboard connection).
Possible when I first tried it was wrong way! Would that have blown input stage in keyboard?
(or should it is be protected by a diode?)
Have since tried in both ways.
I can buy new dc adapter (about £9-15) but may not get me far: is this only way to diagnose?
While I have electrical knowledge and multi-meter, if I open up keyboard I have no other diagnosis kit.
Thanks for any help, in advance,
AndrewD
(no photos useful yet)
Glad for advice to get my 2nd hand keyboard working!
Model CTK501, bought from Ebay (perhaps bad idea!): indicator light not on.
Packaging was not great but no obvious damage or other symptoms.
Seller positive it works; sent photo with keyboard light on.
9V power adapter works - light on, tested by PC shop today.
That has 2 pin connector between lead from adapter to dc probe to device.
Believe it reverses dc power by inserting pins 180 degrees round. But unclear which way gives positive to central probe?
(Probe is very narrow and not tight in keyboard connection).
Possible when I first tried it was wrong way! Would that have blown input stage in keyboard?
(or should it is be protected by a diode?)
Have since tried in both ways.
I can buy new dc adapter (about £9-15) but may not get me far: is this only way to diagnose?
While I have electrical knowledge and multi-meter, if I open up keyboard I have no other diagnosis kit.
Thanks for any help, in advance,
AndrewD
(no photos useful yet)