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#1 2015-01-16 14:27:51

Dnal
Member
Registered: 2015-01-03
Posts: 58

LCII Resurrection has begun

I pulled the caps off the board and washed it.  I only pulled two pads completely off the board (grrr)... should have been more careful.  Lesson learned:  Rock the caps back and forth toward the pins, not side to side (I know its better to desolder, but I don't have that capability and had no problems on the CC). 

Anyway, I got lucky, the two I messed up should be easy, one goes to a via straight through the board and the other is a wide trace to a nearby component, should be able to solder to the trace or lead.

I will post the results soon as I get the new caps.

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#2 2015-01-16 16:31:29

mcdermd
Member
From: Corvallis, OR
Registered: 2014-05-12
Posts: 970
Website

Re: LCII Resurrection has begun

I know that uniserver likes to use a "push and twist" method for removing caps.

I use a "cut and pull" method where you cut the top off the aluminum can, then gently rock it off the plastic base.


Daily Drivers: 27" iMac 2.8 GHz Quad-Core i7 (Late 2009), 21.5" iMac 2.7GHz Quad-Core i5 (Late 2013), 11" Macbook Air 1.6 GHz i5 (Mid-2011)
See the restored heroes here.

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#3 2015-01-16 18:09:14

uniserver
Member
From: Sf, Mi
Registered: 2014-05-15
Posts: 956
Website

Re: LCII Resurrection has begun

I'v been 100% fully switched over to hot air for well over a year.

Those hot air reflow torches are 59 dollars these days, everyone should buy one.
The one I use was integrated with my 4 in one station but the 59 dollar ones work.

heck, looks like the price is going down even more...  here is a good one that i'v purchased before.
54 bucks.  http://www.microcenter.com/product/4191 … rk_Station

it makes cut&pull, Twist, Wiggle methods completely obsolete.

that's my 2 cents smile


#I Re-Cap √Mac √NeTX √Amiga Boards - A/B - PSU# (MacCaps.com)  Modern SCSI HD's - For Old Macs - Pre Cfg'd - 10k RPM! 73gb!! $50 + free shipping  -- Mac 128K Re-Ram kits (16 Chips) $35 + shipping, Floppy Issues?-> Bourns Filter Solution 128k - SE/30, $16 + shipping

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#4 2015-01-16 18:58:07

Dnal
Member
Registered: 2015-01-03
Posts: 58

Re: LCII Resurrection has begun

Ive never looked into the hot air method.  Not sure how it works... suppose I am heading to YouTube next.

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#5 2015-01-16 19:19:42

mcdermd
Member
From: Corvallis, OR
Registered: 2014-05-12
Posts: 970
Website

Re: LCII Resurrection has begun

Hm, $50 is so tempting.

Uni, how is the hot air with removing those caps with really nasty, corroded solder? The stuff that cruds up your iron real quick and doesn't like to melt?


Daily Drivers: 27" iMac 2.8 GHz Quad-Core i7 (Late 2009), 21.5" iMac 2.7GHz Quad-Core i5 (Late 2013), 11" Macbook Air 1.6 GHz i5 (Mid-2011)
See the restored heroes here.

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#6 2015-01-16 19:41:06

uniserver
Member
From: Sf, Mi
Registered: 2014-05-15
Posts: 956
Website

Re: LCII Resurrection has begun

I sent my extra Hot Air Torch unit to Steve over at BMOW,  as far as i know he likes it.
its great for removing I/C's and not cooking the PCB, like what happens when you use a heat gun.
Temperature and Flow control is where its at for this intricate stuff.

click on this link.  it will take you right to where he starts to use it.
http://youtu.be/vva2t21sOAs?t=20m
20 minutes in or watch the whole video.

when i remove caps i take the tip and put it right over the cap and it melts off the pads lickety split!
3 - 7 seconds in most of the time... if the Pads are really rotted up... then could take 10 to 15 seconds.
if the cap is too big to put over the tip then I aim the hot air at an angle, directed at the pads.

Last edited by uniserver (2015-01-16 19:52:03)


#I Re-Cap √Mac √NeTX √Amiga Boards - A/B - PSU# (MacCaps.com)  Modern SCSI HD's - For Old Macs - Pre Cfg'd - 10k RPM! 73gb!! $50 + free shipping  -- Mac 128K Re-Ram kits (16 Chips) $35 + shipping, Floppy Issues?-> Bourns Filter Solution 128k - SE/30, $16 + shipping

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#7 2015-01-16 20:14:25

mcdermd
Member
From: Corvallis, OR
Registered: 2014-05-12
Posts: 970
Website

Re: LCII Resurrection has begun

Well, I just ordered an Aoyue 852A++ off of eBay for $97 shipped so I'll have something to play with soon.


Daily Drivers: 27" iMac 2.8 GHz Quad-Core i7 (Late 2009), 21.5" iMac 2.7GHz Quad-Core i5 (Late 2013), 11" Macbook Air 1.6 GHz i5 (Mid-2011)
See the restored heroes here.

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#8 2015-01-16 21:19:43

uniserver
Member
From: Sf, Mi
Registered: 2014-05-15
Posts: 956
Website

Re: LCII Resurrection has begun

:-)


#I Re-Cap √Mac √NeTX √Amiga Boards - A/B - PSU# (MacCaps.com)  Modern SCSI HD's - For Old Macs - Pre Cfg'd - 10k RPM! 73gb!! $50 + free shipping  -- Mac 128K Re-Ram kits (16 Chips) $35 + shipping, Floppy Issues?-> Bourns Filter Solution 128k - SE/30, $16 + shipping

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#9 2015-01-16 21:21:26

uniserver
Member
From: Sf, Mi
Registered: 2014-05-15
Posts: 956
Website

Re: LCII Resurrection has begun

i think that is the one that Maxx1zz bought... pretty sure he likes it. smile


#I Re-Cap √Mac √NeTX √Amiga Boards - A/B - PSU# (MacCaps.com)  Modern SCSI HD's - For Old Macs - Pre Cfg'd - 10k RPM! 73gb!! $50 + free shipping  -- Mac 128K Re-Ram kits (16 Chips) $35 + shipping, Floppy Issues?-> Bourns Filter Solution 128k - SE/30, $16 + shipping

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#10 2015-01-16 22:06:25

bbraun
Member
Registered: 2014-05-29
Posts: 1,064
Website

Re: LCII Resurrection has begun

If it can't be done with a radio shack special, practice more!

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#11 2015-01-16 22:11:49

uniserver
Member
From: Sf, Mi
Registered: 2014-05-15
Posts: 956
Website

Re: LCII Resurrection has begun

That reminds me of a 60 year old plumber showing up with a pair of Channel Locks in his back pocket smile


#I Re-Cap √Mac √NeTX √Amiga Boards - A/B - PSU# (MacCaps.com)  Modern SCSI HD's - For Old Macs - Pre Cfg'd - 10k RPM! 73gb!! $50 + free shipping  -- Mac 128K Re-Ram kits (16 Chips) $35 + shipping, Floppy Issues?-> Bourns Filter Solution 128k - SE/30, $16 + shipping

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#12 2015-01-16 22:21:03

macdrone
Member
From: Rainier, Or
Registered: 2014-05-25
Posts: 237

Re: LCII Resurrection has begun

I got a 898 D+ combo unit and so far the heat gun and the iron is magnificent.  I feel now I was torturing myself with cheap soldering irons for years.  I look back and I feel pain in the way I was trying to do things.

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