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previous: Graywater Chip:Power supply hum in al... -- 2/8/1999 11:06 AM

Re: Loud hum.....Help!

2/8/1999 11:51 AM
Chip	Re: Loud hum.....Help! Not sure of the actual frequency of the hum, just that it sounds very low.... could be 120hz, I suppose. Changing the filter caps didn't help, though..... Will try the heater supply trick. I'm also going to check component values and connections everywhere. Maybe I've just got a cold solder joint that finaly gave out somewhere. Any suggestions where to look first? Is the physical vibration that occurs at high volume levels indicative of anything (it's not from the speakers, it's shaking on it's own...)? What could shake so hard it makes the head dance around? Pwr supply tranny???? Thanks. -Chip

2/8/1999 11:51 AM

Chip

Re: Loud hum.....Help!

Not sure of the actual frequency of the hum, just that it sounds very low.... could be 120hz, I suppose. Changing the filter caps didn't help, though.....

Will try the heater supply trick.

I'm also going to check component values and connections everywhere. Maybe I've just got a cold solder joint that finaly gave out somewhere.

Any suggestions where to look first?

Is the physical vibration that occurs at high volume levels indicative of anything (it's not from the speakers, it's shaking on it's own...)? What could shake so hard it makes the head dance around? Pwr supply tranny????

Thanks.

-Chip

Replies:

Bruce C My first thought: look at the inpu... -- 2/8/1999 2:39 PM