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| Portable Stuck In Reboot Loop |
Posted by: CC_333 on 2014-01-03 19:00:25
Fortunately, it is a back-lit model, so you should have no trouble figuring it out.
I'll post some pictures shortly.
c
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Posted by: CC_333 on 2014-01-05 21:04:24
OK, here we go...[attachment=1]Logic Board Top.jpg[/attachment][attachment=0]Logic Board Bottom.jpg[/attachment]
Let me know what you think...
c
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Posted by: techknight on 2014-01-05 21:09:39
You didnt rip out the plating in the vias when you replaced the through-hole caps did you? because they look pretty nasty in the photo which is why I am asking.
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Posted by: uniserver on 2014-01-05 21:14:54
yeah that board is never going to work. trust me i already have 8+ hours into that one. recapped twice, it was all rusted to hell. i think it sat in water for like a year or so... did the best i could. Plus if you notice a big hunk of the PCB is missing from the corner… suffered some shipping damage.
hap must really like you 🙂
[attachment=0]Screen Shot 2014-01-06 at 12.07.15 AM.png[/attachment]
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Posted by: CC_333 on 2014-01-05 21:17:04
No, I didn't as far as I can tell. I got it that way.
The top side of the negative through hole of C3 seemed particularly bad.
I suspect that damaged vias, depending on the severity of damage and its importance in the circuit, would be reparable without too much effort, correct?
Worst case, I'll just find a known working board (maybe...)
c
EDIT: AAkk!! :-/ I'll talk to him about getting a new board, then (there goes, more money I don't have...) It's good for parts, I guess.
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Posted by: techknight on 2014-01-05 21:19:57
How did you get that board? Did i miss a swap-triangle?
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Posted by: uniserver on 2014-01-05 21:22:17
before i even re-capped it… i spent about an hour just grinding the rust off the ports.
I wouldn't expect a replacement from hap though he probably sold it to you for what he paid for it… and probably didn't even tack on what he paid me to do the work.
( i'm not saying he owes you anything )
( just saying )
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Posted by: techknight on 2014-01-05 21:23:39
I wonder if it was just stored in a humid environment, like a basement for years.
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Posted by: uniserver on 2014-01-05 21:27:29
yeah i dunno hap was buying up any and every portable he saw on ebay for like 6 month span… i had to of re-capped about 20 -25 portables for him.
this and like one other turned out to not work… but surprisingly hap has had some very good luck with most of his purchases!
i mean you can't win them all… --- but most all of his portables just needed a re-cap basically and worked out just fine after words…
that one there in the picture also got a new boost regulator as well. might have been the first board that i threw a boost regulator on.
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Posted by: uniserver on 2014-01-05 21:50:17
if you want though, i do have another back-lit board here… with issues.
This one is strange in that it thinks the battery is stone dead and keeps putting its self to sleep… you can have it ,,, it works better then the one you have there...
I can include it with that 128k purchase if you ever get around to doing it.
Maybe something you can maybe figure out own your own… might just be a bad via some where or a bad resistor… i don't have the time to monkey with it.
Im not in any way condoning this… but if you run it with out a battery w/ a 2.0a charger it actually works fine. but keep in mind running the portable with out a battery installed
is a death wish.
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Posted by: uniserver on 2014-01-05 23:16:41
cancel that portable L/B board offer… you need a working LB… another fix er up er isn't going to be part of the solution.
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Posted by: CC_333 on 2014-01-05 23:43:57
Agreed.
I'll start looking around for one...
c
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Posted by: uniserver on 2014-01-06 00:04:56
your a great guy… i just hate to send people down paths that could lead to no where.
my only other viable suggestion is to keep an eye out on ebay, and try to pick up another portable AS-IS
maybe you will win it for 60-70 + shipping… and recap the board… and maybe it will all work out good…
obviously you are gonna want to look for a 5126.
+ i don't think hap and those other guys are buying portables up like mad any more.
same thing as i told hap… if it comes with a grey powerbook 2.0 - 3.0 charger adaptor chances are pretty much its toast.
you are looking for portables that come with the white charger/adaptor.
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Posted by: techknight on 2014-01-06 10:30:50
The battery voltage is read by an ADC I believe. So start there
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