View previous topic :: View next topic |
Author |
Message |
awright
Joined: 10 Aug 2005 Posts: 20 Location: Oakland, California
|
Posted: Wed Apr 25, 2007 12:33 am Post subject: |
|
|
Do you meqn q music "keyboard" or a computer keyboard? I assume you mean a musical instrument.
Sounds to me like it is quite tolerant of power supply voltage variations. If it works, go ahead and use the 500 ma. PS, but either measure the current to be sure you are not exceeding its current limit or monitor its temperature (by finger) very carefully, especially on hot days.
If you see a circuit board it was probably originally a regulated supply, but not definitely. If the old PS is non-functional, open it up to see what's there and to see if it was regulated or if you can repair it.
Your interest is in whether the old PS was LIGHTER than normal, not heavier. If it is lighter than you would expect, it was probably an SMPS (Switch Mode Pwer Supply) and, thus, regulated.
Have fun.
awright |
|
Back to top |
|
|
|
|
|
You can post new topics in this forum You can reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
|
eServiceInfo on FB -
Service Manuals Free Download -
Service Diagrams
Free TV Schematics Download -
HARDW.net -
Pinout Master -
Jabse Service Manual Search -
Jabse.InK -
onTap.bg
SnimkiOt.com -
Poblizo.com : пътешествия
Latest Service Manuals :
tx 50ax800e t w804 r800 panasonic • 11-npw2cark NOKIA • E16 Elbe • bd336 ST • hm512-6 Hameg • kra308v KEC • [SMD] KRVW Series Kome • Panel AUO B150XG01 V7 0 [DS] . Various • A-300 CAMBRIDGE • HP E3631A User Agilent •
|