Path: utzoo!attcan!uunet!seismo!sundc!pitstop!sun!decwrl!labrea!agate!ig!uwmcsd1!lakesys!rich
From: rich@lakesys.UUCP (Rich Dankert)
Newsgroups: comp.sys.atari.st
Subject: Re: High pitched whine -- Definite ouch!
Keywords: Make it stop!
Message-ID: <665@lakesys.UUCP>
Date: 13 May 88 04:45:40 GMT
References: <468@unh.UUCP>
Reply-To: rich@lakesys.UUCP (Rich Dankert)
Distribution: na
Organization: Lake Systems - Milwaukee, WI
Lines: 40

In article <468@unh.UUCP> al671@unh.UUCP (Anthony   Lapadula) writes:
>I don't know how common this problem is, but my 1040 ST emits a high
>pitched whine whenever it's in operation.
>
>I had this checked out about 1 month after I bought the system, and was
>told that the sound is probably a sub-frequency of the switching
>power supply.

	First off, I can say that the problem is NOT from the 
	whine of a switching power supply in the 1040. The 1040 ST
	does not use a switching power supply.

	
	Second, I would check into the RS-232c port as the real 
	culpret, although I have never seen (or heard) this 
	personally myself, I have talked with other techs, and 
	such and have also read , that the RS-232c was the problem. 

	This being especially, with a Club members machine (1040 ST also)
	which he took the machine, and was repaired with in two days.

	If you havn't taken you machine into a authorized service station, 
	Then I suggest that you should. 

	If you're handy, or know of someone that is, change the 
	two rs-232 chips in the machine. They can be had at any 
	local Radio Shack store, both for less than $5.00, including
	chips sockets. I will suggest that *if you do decide upon 
	this route, place in the chip sockets, and be carefull of 
	the foils, as there is one in particular, that will lift which 
	will make you have to use some extra hard wiring to repair.


rich.....
UUCP: {Ihnp4,uwvax}!uwmcsd1!lakesys!rich

-- 
 Disclaimer: The words, expressions posted here are my own.....
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