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Article #1068

Re: Teak cd player PD-230 twin IC's

#1068
From: Jim Lazzaro
Date: Thu, 11 Apr 2002 01:47
29 lines
2340 bytes
Thanks for your info; I have checked the motors but are not shorted
and I ahve checked various caps but nothing found.
The fact that the voltage at input pins is only 11.4 compared to the
other similar IC concerns me.
To narrow my search, what component failure could cause this lower
voltage?
Jim

"Mark D. Zacharias" <mzacharias@kscable.com> wrote in message news:<l3%r8.31022$1a.9486409@twister.kc.rr.com>...
> The STA chip is a transistor array. If it's getting hot you have a shorted
> motor. Usually the spindle motor.
> 
> Mark Z.
> 
> 
> "Jim Lazzaro" <jim_lazzaro@hotmail.com> wrote in message
> news:f666726f.0204070723.2f81b1d0@posting.google.com...
> > I have this cd player that attempts to read disk but then stops and
> > does not play the track.
> > I have found an IC (sta451c) that gets very hot to touch within a few
> > minutes of turning the unit on. Its input voltage is 11.4 volts.
> > I have also noticed that on this board there is another similar IC but
> > this one has input voltage of 18.5 volts.
> > Shouldn,t both ICs (being both sta451c) be supplied with equal input
> > voltages?
> > I wonder if I should investigate what causes a low supply voltage of
> > only 11.4 volts to the IC that gets very hot.
> > Thanks to anyone who can assists.
> > Jim from downunder Melbourne AUS.
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From: jim_lazzaro@hotmail.com (Jim Lazzaro)
Newsgroups: sci.electronics.repair,aus.electronics
Subject: Re: Teak cd player PD-230  twin IC's
Date: 10 Apr 2002 18:47:17 -0700
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