What makes it hum loud? Conn organ 71450 - Conn Music

In the link. There are three close by.

https://www.google.com/search?q=Conn+Caribe+635+organ+repair+in+New+Jersey

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There are parts in electronic music devices that change the electricity and filter it. The parts age an lose the ability to do that.

I do not beleive you normally oil a Conn organ, only tonewheel Hammonds require oiling.

You should try these links-
Conn Service Manual Prelude Model 304 Type 1 Model 314 Type 1 ORIGINAL
Prelude 304 314 Type 1 Service Manual
Conn
Price 18 5 Conn Service Manual Prelude Model 304 Type 1 Model 314 Type 1...

Try this link and ask if they have one-
CONN Parts Catalog

Here's a link for you

I have manuals

Of course it is repairable.

Find a competent repair person. You did not describe the "noise". If it is 60 cycle hum, the filter caps need replacing. If it is an organ tone, then probably a key contact is stuck.

Chances are you're hearing "60-Hertz" hum that comes from poor filtering in the organ power supply. Electronic circuits need direct current (DC) but our power lines supply alternating current (AC). The power supply converts the AC to the various DC voltages needed. Parts called filter capacitors smooth out the voltage, and if they go bad or lose contact because of bad connections the result can be the hum you're hearing.

There are other possible causes, but the filtering is so common it's a good place to start. You don't give the age of this organ, but if it's one that has been around a while, it's a good bet some of those capacitors are worn out.

If you can post a follow-up with a make and model, I'll check some of the technician groups and see if anybody has service information.

Good luck and thanks for using Fixya!