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Replacement Capacitors for NeXT Hardware and Motherboards
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Rob Blessin Black Hole
Site Admin


Joined: 05 Sep 2006
Posts: 599
Location: Ft. Collins, Colorado

PostPosted: Sun Oct 02, 2016 3:43 pm    Post subject: Replacement Capacitors for NeXT Hardware and Motherboards Reply with quote

Hello NeXT Community:
I have an old friend that worked for years troubleshooting motherboards so I'm going to have him recap NeXT boards for me.
I know there are a few threads on Capacitor replacement but was hoping for a list of recommended caps for NeXT Specific Hardware so we can point the community at the list :
I'm posting links to good threads here...

I know Trex , Brian Archer and Charles at MacCaps probably have the list in there heads amazing and anyone that can contribute and I'm making links so I can point folks at this thread as a kind of master list in progress that I'll edit!

So the idea is :

Recommended Caps and part numbers for both Electrolytic and Ceramic:
Part Numbers and recommended suppliers Mouser, Digikey US and International
Perhaps pros and cons of each: Do rom chip revs or on board configurations matter to correlate with Rom Chips?

NeXT Cube 68030 25Mhz boards

NeXT Cube 68040 25Mhz boards

NeXT Turbo Cube 68040 33Mhz Boards

NeXT Cube Optical Drive

NeXT Dimension NTSC Boards

NeXT Dimension PAL Boards

NeXT Cube Mod http://www.nextcomputers.org/forums/viewtopic.php?t=3220&highlight=optical+drive

NeXTSTATION Mono 68040 25Mhz Boards

NeXTSTATION Mono Turbo 68040 33Mhz Boards

NeXTSTATION Color 68040 25Mhz Boards
http://www.nextcomputers.org/forums/viewtopic.php?t=3940&highlight=monitor
******
NeXTSTATION Turbo Color 68040 33Mhz Boards
Surface mount capacitors (Qty. 8 for Turbo Color Slab): 47μF 16V Panasonic FP series (Panasonic EEE-FP1C470AP, DigiKey PCE4530CT-ND). The absolute best choice here would be polymer capacitors, but they are several times the price and probably completely unnecessary. They may also destabilize the power supply due to their extremely low impedance.

Through hole capacitors (Qty. 3 for Turbo Color Slab): 220μF 35V Panasonic FC series (Panasonic EEU-FC1V221, DigiKey P10297-ND). These are high temperature 3000 Hr low impedance capacitors (that’s 3000 hour estimated life at 105°C. I selected 35V rated capacitors as they have the same can size as the originals, longer life and higher ripple current. The Panasonic FM series and Nichicon PW series are also an excellent alternative. Look for 5mm lead spacing to fit the motherboard holes.

For flux I recommend Kester 186 or equivalent, since it is mild enough to be left on after the solder process and it will not cause any damage or corrosion to the components or to the board.
Trexy Turbo Color Doc https://www.dropbox.com/s/fiwxr8ejsx1loxw/NEXTSTATION%20Turbo%20Color%20Capacitor%20Replacement%20-%20NC.pdf
*****
NeXT CDRom Drive
http://www.asterontech.com/Asterontech/next_cdrom_refurb.html Brian
Archer
****
NeXT ADB Soundbox board
http://www.nextcomputers.org/forums/viewtopic.php?t=3428&highlight=adb+non+adb Conversion with instructions Brian
****
NeXT Non ADB Soundbox Board

NeXT Sony 4000 Monitor
http://www.asterontech.com/Asterontech/NeXT_MegaPixel_Restore.html
****
NeXT Sony 4000A Monitor
http://www.asterontech.com/Asterontech/NeXT_MegaPixel_Restore.html
****
NeXT Flatpanel mod 17"
http://www.nextcomputers.org/forums/viewtopic.php?t=3533&highlight=flat+panel+mod
****
NeXT Phillips 17" Monitor
http://www.nextcomputers.org/forums/viewtopic.php?t=3936&highlight=monitor Brooklyn
NeXT Sony 17" Trinitron Monitor

NeXT Hitachi 21" Monitor
****
NeXT ADB Keyboards
http://www.nextcomputers.org/forums/viewtopic.php?t=3418&highlight=next+adb+keyboard
*****
Any other I've missed?

Thank your for your time as I know it will help a lot of folks refurbishing the NeXT equipment!
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Rob Blessin President computerpowwow ebay sales@blackholeinc.com http://www.blackholeinc.com
303-741-9998 Serving the NeXT Community since 2/9/93
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barcher174



Joined: 07 Dec 2012
Posts: 560

PostPosted: Mon Oct 03, 2016 8:29 pm    Post subject: Reply with quote

I also have some hard drive restorations:

Original Maxtor:
http://www.asterontech.com/Asterontech/xt8380s_cap_replacement.html

Quantum swap disk:
http://www.asterontech.com/Asterontech/Quantum_ProDrive_40s_Restore.html
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barcher174



Joined: 07 Dec 2012
Posts: 560

PostPosted: Fri Oct 07, 2016 5:37 pm    Post subject: Reply with quote

I posted a nextstation mono guide here:

http://www.asterontech.com/Asterontech/nextstation_mono_retore.htm

If anyone has a PN-1703.AB or PN-1703.AA board please send me a high res photo and I will include it.
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tomaz



Joined: 15 Apr 2006
Posts: 149
Location: Sark

PostPosted: Mon Oct 31, 2016 3:35 am    Post subject: Reply with quote

I'm not sure if this is the right thread to post this in or not, but I guess it is related. Rob has been very kind and recommended a good man to recap my boards, however, he is in the U.S. and I'm in Europe and I have 40+ boards that need recapping and the logistics of shipping all this to the U.S. and back has been frightening me. Does anyone know someone good — and I emphasize good — in Europe who will do this, and do a good job? Also, other than motherboards and MO drive boards, how about power supply boards, sound box boards, the PCBs in keyboards(?), they presumably all will need recapping one day, the PSUs definitively. Has anyone had interesting experiences to report on this. And monitors?
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barcher174



Joined: 07 Dec 2012
Posts: 560

PostPosted: Mon Oct 31, 2016 9:25 am    Post subject: Reply with quote

For the logic boards, maybe try a cell phone repair shop in your area?
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Rob Blessin Black Hole
Site Admin


Joined: 05 Sep 2006
Posts: 599
Location: Ft. Collins, Colorado

PostPosted: Mon Oct 31, 2016 1:26 pm    Post subject: Reply with quote

Hello Tomaz: I've hired a longtime friend that will be doing this as a side job that was the quality control guy for Celestica Motherboards for 6 years. He has already done some excellent work for me on ADB to Non ADB conversions and I'm going to set him up with some NeXT Motherboards already have the new Capacitors in hand. I've been using Charles at Mac Caps for years and he does a good job as well, Charles currently has a batch of Cube motherboards and I'm just patiently waiting for him to recap them as I have back orders to fill. It will make it easier for me to test the boards having a local recap rather than sending them out and using both as well as Brian when he has time helps . I understand the advantage of you going local as well. If you wanted me to do them locally and are not in a hurry I know Matt will do a good job . Let me see how everything goes with his first few motherboards as I say I'm impressed with his work so far. Brian does a great job as well , it is amazing how much interest we have with new NeXT hardware owners , it is a lot of fun for me !
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slomacuser



Joined: 12 Jan 2006
Posts: 220
Location: Slovenia, EU

PostPosted: Wed Nov 02, 2016 12:10 pm    Post subject: Reply with quote

I know people who can recap in Europe. Where are you located? Mac caps service is very expansive.
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tomaz



Joined: 15 Apr 2006
Posts: 149
Location: Sark

PostPosted: Fri Nov 25, 2016 9:44 am    Post subject: Reply with quote

slomacuser wrote:
I know people who can recap in Europe. Where are you located? Mac caps service is very expansive.
There won't be anyone near where I am, so I will have to ship them, so any recommendation in Europe of someone who can do a good job would be welcome.
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paolo.bertolo



Joined: 24 Sep 2015
Posts: 57
Location: St Gallen, Switzerland

PostPosted: Sun Dec 11, 2016 1:37 pm    Post subject: Reply with quote

Should anyone be interested, I've just replaced all the capacitors in a MO drive (Motor Board, Analog Board, Digital Board) with solid state, surface mounted ceramic ones. Not the easiest job ever, but surely doable with some basic soldering skills.
In case, I can share the BOM for buying the whole set at Digikey.
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Scutboy



Joined: 04 Mar 2010
Posts: 40
Location: Northfield, MN USA

PostPosted: Sun Dec 11, 2016 3:51 pm    Post subject: Reply with quote

paolo.bertolo wrote:
Should anyone be interested, I've just replaced all the capacitors in a MO drive (Motor Board, Analog Board, Digital Board) with solid state, surface mounted ceramic ones. Not the easiest job ever, but surely doable with some basic soldering skills.
In case, I can share the BOM for buying the whole set at Digikey.


Please share the BOM. I need to take this job on one way or another.
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paolo.bertolo



Joined: 24 Sep 2015
Posts: 57
Location: St Gallen, Switzerland

PostPosted: Mon Dec 12, 2016 11:58 am    Post subject: Reply with quote

Here please find the complete list of capacitors (file is in Apple's "Numbers" format)

https://dl.dropboxusercontent.com/u/47587908/Canon%20Optical%20Drive%20-%20Motor%20Board%20Rev.%20B%20%20shared.numbers

The references highlighted in green are ceramic surface mounted, those in blue are regular pass through mounted electrolytic capacitors.

Soldering surface mounted in place of pass through requires that you prepare some kind of "bed" for both ends of each capacitor. Again, not easy, but doable.
Using solid state, high temp resistance ceramic capacitors should ensure a more robust and time proof solution (actually, the first recapped drive I've worked on has stopped working after just one year, with some of the electrolytic capacitors already showing strong degradation, I assume due to very high heat load).
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Scutboy



Joined: 04 Mar 2010
Posts: 40
Location: Northfield, MN USA

PostPosted: Mon Dec 12, 2016 2:57 pm    Post subject: Reply with quote

paolo.bertolo wrote:
Here please find the complete list of capacitors (file is in Apple's "Numbers" format)


Thanks!
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oneNeXT



Joined: 02 Jun 2008
Posts: 134
Location: Europe

PostPosted: Thu Dec 29, 2016 5:11 pm    Post subject: Reply with quote

Can you tell us, please which tools do you use ?
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tomaz



Joined: 15 Apr 2006
Posts: 149
Location: Sark

PostPosted: Thu Dec 29, 2016 6:40 pm    Post subject: Reply with quote

Are you able to please share the file in a different format? My Numbers version is too old to be able to open that file.
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bobo68



Joined: 03 Jun 2015
Posts: 194
Location: Germany

PostPosted: Mon Jan 02, 2017 2:08 pm    Post subject: Reply with quote

Here is the file exported in Excel format: https://dl.dropboxusercontent.com/u/1429222/Canon%20Optical%20Drive%20-%20Motor%20Board%20Rev.%20B%20%20shared.xlsx
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