What kind of Capacitor

Thread Starter

shirreff

Joined Sep 6, 2011
36
Thanks for all the help,
I changed the Diode and it got rid of the battery warning message but there was a problem with the sound cutting out so I looked on the board and there was an inductor which had been leaking and was cracked. I changed it and the sound is now fine.
In the past I have just swapped the pcb for one that works but fixing is much better as the boards are nearly 30 years old and getting hard to find. Luckily for me I have kept the old boards.

These inductors seem to leak a lot, I have seen this on most of the power supplies on this type of keyboard but most work fine so I have not given it much thought.
Question.
Should I replace them if I see leakage or should I leave them alone?
 

Kermit2

Joined Feb 5, 2010
4,162
Again, there is probably a naming error in what you are describing.

An inductor is a coil of copper wire, with or without an internal magnetic core material. It has nothing which can 'leak'.

A capacitor(electrolytic variety) has a wet substance inside, which can leak out and cause the problems you describe.

Once again a picture of the problem component would be helpful in figuring out what you have.
 

Thread Starter

shirreff

Joined Sep 6, 2011
36
Oh So wrong again.....
After I posted I pulled the little green thing apart to see what's inside and I thought that nothing could leak. on closer inspection I think one end of the connection to the board had broke and was causing in intermittent on off of the sound. The inductor is surrounded by capacitors 220uf 25v so I assume that the capacitors have leaked. they are still working and the leakage is rock solid so should I leave well alone or replace?
 
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