Re: weird problem with Powerbook 520

2001-10-17 Thread Don Silver

I had the same experience (no hard drive spin up, just
clicking) when I inadvertently fried my old HD. I knew
right away, tho, what the cause of the HD melt-down
was--I forgot to install a SCSI terminator. This was
easily, albeit a bit expensively, fixed. I would hold
off on popping your new HD into your PBook and get the
old one tested at your local shop--if it's dead, you
need to find out why before you torch your new one; if
it's not, you've eliminated one potential source for
your problem. 

cheers,
Don Silver

=


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Re: weird problem with Powerbook 520

2001-10-17 Thread Richard Adams

Speaking of upgrades, isn't it true that you can upgrade a Duo280C to 
PowerPC? Anybody know what the procedure is, and where to get the upgrade?

Also, I assumed from my lack of sound that there's probably a minor hardware 
problem (I'm betting a simple broken or disconnected wire) in my Duo. I took 
the screws out, but didn't feel like messing with trying to force the unit 
apart without being sure what I was doing. Can anybody tell me how to best 
get at this thing's innards?

Ciao,

Richard


From: Dana Sibera [EMAIL PROTECTED]
Reply-To: [EMAIL PROTECTED] (PowerBooks)
To: [EMAIL PROTECTED] (PowerBooks)
Subject: Re: weird problem with Powerbook 520
Date: Wed, 17 Oct 2001 12:22:32 +1000

  I upgraded my Powerbook 520c with a PowerPC daughtercard. Everything
  worked
  perfectly. However I needed to go back to the old CPU to run an old app
  that
snipped long stuff
  drive. I left it charging all night and it still happened this
  morning.  I
  have a new hard drive I could test, but I'm wondering if the system is
  damaged in some way, if that could damage the new drive.
  Any ideas welcome!


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Re: weird problem with Powerbook 520

2001-10-17 Thread Magnus Rohde

d. 17/10/01 21:13 skrev Richard Adams på [EMAIL PROTECTED]:

 Speaking of upgrades, isn't it true that you can upgrade a Duo280C to
 PowerPC? Anybody know what the procedure is, and where to get the upgrade?
 
 Also, I assumed from my lack of sound that there's probably a minor hardware
 problem (I'm betting a simple broken or disconnected wire) in my Duo. I took
 the screws out, but didn't feel like messing with trying to force the unit
 apart without being sure what I was doing. Can anybody tell me how to best
 get at this thing's innards?
 
 Ciao,
 
 Richard
 

try to take a look at:
http://w3.trib.com/~dwood/servicemanuals.html

Magnus


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Re: weird problem with Powerbook 520

2001-10-17 Thread makmac

Richard Adams on 10/17/01 2:13 PM wrote:

 Also, I assumed from my lack of sound that there's probably a minor hardware
 problem (I'm betting a simple broken or disconnected wire) in my Duo. I took
 the screws out, but didn't feel like messing with trying to force the unit
 apart without being sure what I was doing. Can anybody tell me how to best
 get at this thing's innards?
 

It's very prudent of you to wait rather than force your 280c open. There are
some small plastic eyelets that are very often broken off in the process of
cracking open this or any Duo. They're right under your right palm, at the
front, right, corner where the top and bottom meet.

I would strongly recommend downloading a service manual for your Duo and
follow the steps carefully. Unfortunately I don't have a link to follow.

Pretty much all the Duos can be upgraded to a PPC by swapping out the logic
board with that of a 2300. Everything else will match up. However you will
need one of the high output AC adapters (36 watt rather than 25) and there
may be an issue of heat if the stiffener/frame/chassis inside doesn't make
good contact with the processor. With the PPC upgrade you can install a much
larger, cheaper IDE drive (which will require an IDE ribbon cable).

As to your sound problem, the speaker gets power from the same ribbon cable
that goes to the LCD screen. Perhaps the connection at the speaker, or where
the video cable connects to the logic board is not properly seated. Or it
could be a software problem (sound out selection in control panel etc.). You
may try to zap the PRAM and see if that resets any defaults related to
sound.

HTH,
-makmac


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Re: weird problem with Powerbook 520

2001-10-17 Thread Richard Adams

Thanks, Magnus.

Some of the links have led to dead ends, but I haven't tried 'em all yet. I 
appreciate the tip.

Ciao,

Richard


From: Magnus Rohde [EMAIL PROTECTED]
Reply-To: [EMAIL PROTECTED] (PowerBooks)
To: [EMAIL PROTECTED] (PowerBooks)
Subject: Re: weird problem with Powerbook 520
Date: Wed, 17 Oct 2001 21:26:25 +0200

d. 17/10/01 21:13 skrev Richard Adams på [EMAIL PROTECTED]:

  Speaking of upgrades, isn't it true that you can upgrade a Duo280C to
  PowerPC? Anybody know what the procedure is, and where to get the 
upgrade?
 
  Also, I assumed from my lack of sound that there's probably a minor 
hardware
  problem (I'm betting a simple broken or disconnected wire) in my Duo. I 
took
  the screws out, but didn't feel like messing with trying to force the 
unit
  apart without being sure what I was doing. Can anybody tell me how to 
best
  get at this thing's innards?
 
  Ciao,
 
  Richard
 

try to take a look at:
http://w3.trib.com/~dwood/servicemanuals.html

Magnus


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Re: weird problem with Powerbook 520

2001-10-17 Thread Richard Adams

Thanks for the tips, I appreciate them. I thought the PPC upgrade was just a 
chip replacement, I don't know if I'll bother with it if it's a lot more 
involved (probably better for me to just get a 2300 or better on E-Bay at 
that point - then again, I wanted the Duo largely 'cause I drastically 
prefer trackballs over touchpads).

It's handy to know that the same cable goes to the LCD and sound output - 
the display looks fine, so that cable is probably OK. I've only tried to get 
sound through the Control Panel alarms setting and the Jigsaw puzzle (and, 
of course, I don't have a start-up chime). AFAIK, the volume settings are 
all on and up to max.

Thanks again for the help!

Ciao,

Richard


From: makmac [EMAIL PROTECTED]
Reply-To: [EMAIL PROTECTED] (PowerBooks)
To: [EMAIL PROTECTED] (PowerBooks)
Subject: Re: weird problem with Powerbook 520
Date: Wed, 17 Oct 2001 14:33:56 -0500

Richard Adams on 10/17/01 2:13 PM wrote:

  Also, I assumed from my lack of sound that there's probably a minor 
hardware
  problem (I'm betting a simple broken or disconnected wire) in my Duo. I 
took
  the screws out, but didn't feel like messing with trying to force the 
unit
  apart without being sure what I was doing. Can anybody tell me how to 
best
  get at this thing's innards?
 

It's very prudent of you to wait rather than force your 280c open. There 
are
some small plastic eyelets that are very often broken off in the process of
cracking open this or any Duo. They're right under your right palm, at the
front, right, corner where the top and bottom meet.

I would strongly recommend downloading a service manual for your Duo and
follow the steps carefully. Unfortunately I don't have a link to follow.

Pretty much all the Duos can be upgraded to a PPC by swapping out the logic
board with that of a 2300. Everything else will match up. However you will
need one of the high output AC adapters (36 watt rather than 25) and there
may be an issue of heat if the stiffener/frame/chassis inside doesn't make
good contact with the processor. With the PPC upgrade you can install a 
much
larger, cheaper IDE drive (which will require an IDE ribbon cable).

As to your sound problem, the speaker gets power from the same ribbon cable
that goes to the LCD screen. Perhaps the connection at the speaker, or 
where
the video cable connects to the logic board is not properly seated. Or it
could be a software problem (sound out selection in control panel etc.). 
You
may try to zap the PRAM and see if that resets any defaults related to
sound.

HTH,
-makmac


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Re: weird problem with Powerbook 520

2001-10-17 Thread Magnus Rohde

d. 17/10/01 22:45 skrev Richard Adams på [EMAIL PROTECTED]:

 Thanks, Magnus.
 
 Some of the links have led to dead ends, but I haven't tried 'em all yet. I
 appreciate the tip.
 
 Ciao,
 
 Richard
 

Maybe one of these will work:

ftp://ftphqx.info.apple.com/Apple_Support_Area/Misc/Service/servicemanuals/p
owerbook_200_series.pdf

or

ftp://ftphqx.info.apple.com/Apple_Support_Area/Misc/Service/servicemanuals/p
owerbook_2300_series.pdf

Magnus


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Re: weird problem with Powerbook 520

2001-10-17 Thread Paul Nelson

At 2:13 PM -0500 10/17/01, Richard Adams wrote:
Speaking of upgrades, isn't it true that you can upgrade a Duo280C to
PowerPC? Anybody know what the procedure is, and where to get the upgrade?

It isn't a real upgrade, though.  What you are doing is swapping
the bottom of a 2300C for the 280C bottom.  Motherboards are listed for
$125 on ebay, so it probably is easier to buy a 2300C instead.
Paul



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Re: weird problem with Powerbook 520

2001-10-17 Thread Richard Adams




From: Paul Nelson [EMAIL PROTECTED]
Reply-To: [EMAIL PROTECTED] (PowerBooks)
To: [EMAIL PROTECTED] (PowerBooks)
Subject: Re: weird problem with Powerbook 520
Date: Wed, 17 Oct 2001 12:52:31 -0700

At 2:13 PM -0500 10/17/01, Richard Adams wrote:
 Speaking of upgrades, isn't it true that you can upgrade a Duo280C to
 PowerPC? Anybody know what the procedure is, and where to get the 
upgrade?

   It isn't a real upgrade, though.  What you are doing is swapping
the bottom of a 2300C for the 280C bottom.  Motherboards are listed for
$125 on ebay, so it probably is easier to buy a 2300C instead.
Paul

Exactly as I suspected. Thanks for the input, Paul, I appreciate it.

Ciao,

Richard

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Re: weird problem with Powerbook 520

2001-10-17 Thread Richard Adams

Thanks, Magnus, I'll try them. I appreciate your help!

Ciao,

Richard


From: Magnus Rohde [EMAIL PROTECTED]
Reply-To: [EMAIL PROTECTED] (PowerBooks)
To: [EMAIL PROTECTED] (PowerBooks)
Subject: Re: weird problem with Powerbook 520
Date: Wed, 17 Oct 2001 23:17:53 +0200

d. 17/10/01 22:45 skrev Richard Adams på [EMAIL PROTECTED]:

  Thanks, Magnus.
 
  Some of the links have led to dead ends, but I haven't tried 'em all 
yet. I
  appreciate the tip.
 
  Ciao,
 
  Richard
 

Maybe one of these will work:

ftp://ftphqx.info.apple.com/Apple_Support_Area/Misc/Service/servicemanuals/p
owerbook_200_series.pdf

or

ftp://ftphqx.info.apple.com/Apple_Support_Area/Misc/Service/servicemanuals/p
owerbook_2300_series.pdf

Magnus


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Re: weird problem with Powerbook 520

2001-10-16 Thread Martin

An idea is all I have! I had the same problem when I pulled my 540c
apart to clean it (and to uhhh... poke around the insides cos I hadn't
seen inside one before :D and when I'd clipped the memory back in, the
tiny fine-pinned connector had one pin leaning over to the side and
shorting with another. I used a pair of tweezers to straighten it,
popped the memory in and all was fine again.
be well :D
dana


I had the SAME experience with my 540: the double-sided pin bar of their
RAM modules seems like a poor design, as the pins tend to embed too deeply
into the plastic substrate, making poor or intermittent contact. I spent
quite some time straightening and polishing the tiny wire contacts on mine,
using a jeweller's loupe to see them properly, because I'd finally tracked
my Sad Mac problems down to the RAM module. The RAM itself was fine, though.

Hope that's all it is.

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