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|31st October 2004, 05:30 PM||#1|
Join Date: Sep 2004
hum on preamp phono output
I have hum on my phono preamp output .
When connecting my turntable , hum is quit big and reduce 90% when connecting aplifier earth .
I try to make a direct wire from cartridge to phono output , same problem , i change the cartridge , same problem , so I suspect the phono output but I do not know many in electronics .
When thre is no connection on the phono output thre is still hum .
My preamp is 20 years old with component like :
NE 5524 AN
itt 25V 47 uf.
Can someone give me some help , should i chnage the itt caps 47 uf ?
alos if i can upgarde it , the phono is on a single card !
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