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From: rich@lakesys.UUCP
Newsgroups: comp.sys.atari.8bit
Subject: Re: Mike Ishler, I can't reach you.
Message-ID: <280@lakesys.UUCP>
Date: Wed, 28-Oct-87 01:31:38 EST
Article-I.D.: lakesys.280
Posted: Wed Oct 28 01:31:38 1987
Date-Received: Sat, 31-Oct-87 00:09:41 EST
References: <6862@mhuxu.UUCP>
Reply-To: rich@lakesys.UUCP (Rich Dankert)
Organization: Lake Systems, Milwaukee, WI
Lines: 31
Keywords: Drive Problems

>
>I replaced both diodes, CR15 and CR16 I think are their numbers.  OThe voltage
>across them is about 5V.  Does this sound right?  When I put a disk in the 
>drive and close the handle, the drive makes a noise for only a moment, (you
>know the sound, whatever it is).  The busy light stays on, but the disk never
>turns and when I turn on the computer I get the disk boot error message.
>

	Here's a bit of advice that just may solve your problems. In the 
above I noticed that you have replaced the diodes and are now on the lookout 
for possible bad solder connections. 

My suggestions is that you replace the whole Bridge Rectifier system, and 
also the 5 Volt regulator. I have had many a 1050 drive in my hands for repair
and for the most part the 5 volt reg was the problem. The voltage on the side 
of the diode, ( CR15 I think -- the one comming directly from the bridge ) 
should be about 22 volts. If it's low, you probably have a leaky diode in the 
bridge, so just replace all 4 diodes in the bridge. Replacesment of the 5 volt
regulator is cheap insurance, so I would also opt for that. Just rememer to 
get the rigth polarity regulator. Wouldn't want to pop the wrong voltage 
potential around the drive, which would make the whole situation worse.

-rich

	Lakesys & Milwaukee      |	Who & where ?????
	          A great place by a great lake.....


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Discalimer: The words,ideas,and expressions are my own, and not nessasarily 
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