Re: PowerBook 3400c won't power on

2004-07-18 Thread sirksd 
I think the AC adapter would get hot even if the computer does not accept
the current, if the adapter is working.  It does sound like the AC adapter
to me - not the solder problem.  Also, my experience with AC adapters on
the 5300 and on the 3400 is that the wire gets a break somewhere and the
adapter then won't work.  I would try the adapter before I wiggle any part
in the computer.  Otherwise you may cause a problem which you don't have
now.

Dan in AZ

Tom and Lisa P wrote:

"One thing I've noticed is that the AC adapter doesn't get warm at all,
and the battery doesn't seem to charge.  I'm thinking there's a chance it
might be the AC adapter,"
-Adam

>
> Does it work on AC if you jiggle the plug a little ?  YOu might have
> the classic cold-solder-joints-on-the-AC-plug syndrome.
>
> Mad Dog


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Re: PowerBook 3400c won't power on

2004-07-14 Thread Tom and Lisa P 
Adam,
   I have 3 complete machines plus a logic board with similar 
symptoms, in one case I was able to resurrect a machine by replacing 
the power supply module, but in the 4 other cases the problem lay 
with the logic board and probably on of 2 chips, the PMU chip, which 
is a low power 68000 series chip and is labeled, and the O'hare IO, 
and disc controller which feeds the PMU chip.  Currently the only 
source for logic board components I know of is salvaged  boards, by 
the power supply module ought be available on the LEM list.

Roger
Roger, were you ever able to ressurect a machine by a PMU replacement 
?  I have 3 3500 boards that wont boot, and I really suspect 
something in power management.

Mad Dog
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Re: PowerBook 3400c won't power on

2004-07-14 Thread Tom and Lisa P 
A friend of mine has a PowerBook 3400c/180 that she's been using for 
the past number of years, however one day it refused to power on. 
She had me take a look at it, and I hit the power button (without it 
plugged in) and it powered up but no chime and nothing on the 
screen.  I set it down on a table and plugged it in, and did 
command-control power, and it chimed and booted up fine.  It 
wouldn't let me reset the PRAM, however, and it didn't show the 
battery as charging.  Then, while it was running I removed the 
battery and it immediately shut down.  I have since been unable to 
get it to boot up again.  One thing I've noticed is that the AC 
adapter doesn't get warm at all, and the battery doesn't seem to 
charge.  I'm thinking there's a chance it might be the AC adapter, 
so I'm going to bring it to the Apple dealer and have them test it 
with a different AC adapter...but if that's not it, any ideas? 
Maybe the power manager circuit?  And is it worth me trying to fix 
it for her (not sure how much a new power manager circuit costs)? 
Afterall, it seems that 233Mhz G3's are going for under $200 on eBay 
these days.

Thanks for any advice.
-Adam
Does it work on AC if you jiggle the plug a little ?  YOu might have 
the classic cold-solder-joints-on-the-AC-plug syndrome.

Mad Dog
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Re: PowerBook 3400c won't power on

2004-07-14 Thread Volk (contractor) 
Adam,
   I have 3 complete machines plus a logic board with similar symptoms, 
in one case I was able to resurrect a machine by replacing the power 
supply module, but in the 4 other cases the problem lay with the logic 
board and probably on of 2 chips, the PMU chip, which is a low power 
68000 series chip and is labeled, and the O'hare IO, and disc controller 
which feeds the PMU chip.  Currently the only source for logic board 
components I know of is salvaged  boards, by the power supply module 
ought be available on the LEM list.

Roger
Adam R. S. Guha wrote:
A friend of mine has a PowerBook 3400c/180 that she's been using for the past number 
of years, however one day it refused to power on.  She had me take a look at it, and I 
hit the power button (without it plugged in) and it powered up but no chime and 
nothing on the screen.  I set it down on a table and plugged it in, and did 
command-control power, and it chimed and booted up fine.  It wouldn't let me reset the 
PRAM, however, and it didn't show the battery as charging.  Then, while it was running 
I removed the battery and it immediately shut down.  I have since been unable to get 
it to boot up again.  One thing I've noticed is that the AC adapter doesn't get warm 
at all, and the battery doesn't seem to charge.  I'm thinking there's a chance it 
might be the AC adapter, so I'm going to bring it to the Apple dealer and have them 
test it with a different AC adapter...but if that's not it, any ideas?  Maybe the 
power manager circuit?  And is it worth me trying to fix it for her (not sure how much 
a new power manager circuit costs)?  Afterall, it seems that 233Mhz G3's are going for 
under $200 on eBay these days.
Thanks for any advice.
-Adam

 


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PowerBook 3400c won't power on

2004-07-13 Thread Adam R. S. Guha 
A friend of mine has a PowerBook 3400c/180 that she's been using for the past number 
of years, however one day it refused to power on.  She had me take a look at it, and I 
hit the power button (without it plugged in) and it powered up but no chime and 
nothing on the screen.  I set it down on a table and plugged it in, and did 
command-control power, and it chimed and booted up fine.  It wouldn't let me reset the 
PRAM, however, and it didn't show the battery as charging.  Then, while it was running 
I removed the battery and it immediately shut down.  I have since been unable to get 
it to boot up again.  One thing I've noticed is that the AC adapter doesn't get warm 
at all, and the battery doesn't seem to charge.  I'm thinking there's a chance it 
might be the AC adapter, so I'm going to bring it to the Apple dealer and have them 
test it with a different AC adapter...but if that's not it, any ideas?  Maybe the 
power manager circuit?  And is it worth me trying to fix it for her (not sure how much 
a new power manager circuit costs)?  Afterall, it seems that 233Mhz G3's are going for 
under $200 on eBay these days.

Thanks for any advice.

-Adam



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