NetNews Usenet Archive 1992 #27/NN_1992_27.iso/spool/comp/sys/mac/hardware/21716

Internet Message Format | 1992-11-17 | 1.5 KB

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From: [e-mail] (Marc Bizer)
Newsgroups: comp.sys.mac.hardware
Subject: spontaneous brightness changes on PowerBook 170
Message-ID: <[e-mail]>
Date: 17 Nov 92 04:23:27 GMT
Sender: [e-mail]
Organization: University of Texas at Austin
Lines: 16
X-UserAgent: Nuntius v1.1.1d12
X-XXMessage-ID: <[e-mail]>
X-XXDate: Mon, 16 Nov 92 04:14:20 GMT

Hi everyone,
    I have a question for the PowerBook 170 owners among you. Sometimes when
I'm using my PB with the backlighting on, the display seems a bit dim
even when the backlighting is set to maximum brightness. However, it has
happened when I'm working that suddenly the brightness of the display
increases. Maximum display brightness does seem somewhat less when you're
running off of the internal battery. Just now, the display seemed a bit
dim, and it turns out that I was running off of my battery. I plugged the
charger cord in without noticing any change, but then suddenly the
display got brighter when the charge level of my battery was at about 6.8
volts. Pulling my charger cord out and putting it back in causes the
display brightness to drop and then to rise again. Has anyone else
noticed this phenomenon? Please share your observations with me directly
at [e-mail] and by posting them to the net.
        Sincerely yours,
        Marc Bizer