Wurlitzer organ model 542, it has power, buzzes on upper keyboard and no noise on lower keyboard

I would take the pedal board apart, repair any damage and put it back together again.

https://www.organforum.com/forums/showthread.php?50109-Wanted-Wurlitzer-Omni-6000-Keyboard-Computer
https://www.instructables.com/id/Repairing-an-Electronic-Organ/
http://www.casiomusicforums.com/index.php?/topic/13338-wurlitzer-organ/
http://forums.musicplayer.com/ubbthreads.php/topics/2332520/all/SK_1_and_2_Tips_Tricks_and_Oth

Try this: http://www.amazon.com/Wurlitzer-Organ-owners-manual-model/dp/images/B002UJXFYM
Afterwards, if this is NOT what you want, open up a browser window, type in google.com and then, enter Wurlitzer 4300 Owner's Manual. Amazing, huh?

These older units like this usually inherit intermittent problems like this from sitting up and gathering dust. There are many switches and relays inside this model, and other electrical connections that would get dirty or corroded over the years. I think a good professional servicing would fix this.

I have the same problem, if have the solution help me [email protected]

NOT FOR BEGINNERS
These old organs need careful handling - try any visible fuses. Probably cheaper to replace with a modern keyboard which can do far more - sad to say! Sorry

Haven't had the pleasure of working on one of these in a while!!

The problem is most likely dried up capacitors in the power supply. Any audio shop should be able to work on this. They may require you to remove the power supply though. There are folks that repair these in-home as well. It may take a little research, but check with local music shops for someone to repair this. The parts cost will likely be in the $40 range.

Dan

If you have it apart, look in the area of where the power cord goes in. It would help me if you could mention the model number of the organ.The capacitors are in the same area as a fuse would be. The capacitors smooth and filter the A.C. power after the power goes into the power transformer and is then converted to D.C. to run the components. A fuse could be in the A.C. line or in the D.C. line depending on what it is designed to protect. With a model number we could do a search for a schematic and have a look at the most likely problem spots. The schematics for older analog organs are getting hard to find for free but a newer digital one may be easier. Let me know how you make out. Here is an interesting article that may give you some clues:http://www.theatreorgans.com/hammond/keng/kenhtml/wurlitzer%20organs%20by%20frank%20pugno.htm Here is another link with info:http://www.combo-organ.com/spares_and_repairs.htm#Electrolytics Let me know if this helps.

Try this link and contact Morelock's organ parts for a service manual:http://mitatechs.org/node/612 Please rate this if it helps.

Try voice 9 in the bank 96. That is for a theater organ type sound. You would need decent sound system to amplify this and to sound anywhere near decent.