Category Archives: Power supply

Apple ProFile repairs:

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Just some thoghts about few Apple Profile hardisks i had repaired recently. Basicly all of them needed new safety capasitors (aka “Rifa’s”) on their power supplies, some cleaning and even trying to repair and gluing the broken case back together.

Drive #1 (from Spain)

This one i’ve had for some years. I originally got it with early 12v model Apple /// (that i no longer have). The drive had it’s case broken during transporation but it did work. So i opened this to do some repairs to the case, clean inside and do some mainantance for the power supply by replacing the safety capasitors.

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Oh boy.. was this thing FILTHY! Lots of dust absolutely EVERYWHERE inside. Just insane. Lots of cleaning to be done…the logic board was so dusty i could not even read the text from chips or board itself.

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Power supply had almost blown Rifa’s on it. Good timing to swap those. Should never power up anything with these on before replacing them….

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The case itself was also dusty and had lots of black dust from the motor. Cleaning time…

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I did what i could and glued the pieces i had left to the case – it’s not pefect but that will have to do. 

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Atleast the case holds up now a bit better.

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Every possible corner of the drive was broken….

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The drive itself worked after the cleanup and power supply repairs. It was SOS formatted but erased and empty.

 

Drive #2 (Sweden)

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When i received this Profile earlier this year, i booted it with the /// and found Catalyst menu. When accessing the installed software the safety capasitors (aka “Rifa’s”) exploded… lots of smoke and nasty popcorn smell. It took some days to get rid of that smell..  That wasn’t even all, the ///’s power supply did the same a bit later – so it was time to get the soldering iron and get to work!

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Opened up the drive & took some photos for documentation (good practise). The drive was quite clean inside, just some dust but nothing compared to the “Spanish” Profile…

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The power supply pcb was really difficult to remove. Those screws were really stuck due some locking glue/paint on them and took lots of time removing them. 

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One safety capasitor had blown but i changed them all as i had the parts:

0,01uF (2pcs)
0,1uF  (1pcs)
0,47uF (1pcs)

 

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Lots of caps in this board were soldered really annoyingly as the legs been bent towards the pcb itself, like in “L” shape. Took lots of time to remove some of these. Also they used A LOT of solder at factory. Good practice if nothing else.

After that did just overall cleaning for the case and put it back. 

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Hope the drive itself is still readable, it does make horrible noise when it’s spinning. Sounds like the hardisk bearings (?) are about the give in. There’s some bad blocks on that drive as well. Should backup that….

Drive #3 (Finland)

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This Profile i found locally and the unit itself is pretty clean.

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Did the same mainantance to it as the others, new safety capasitors and cleaning. The drive was really clean, only the analog board was bit dusty. Quick job and we’re done.

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The drive inside after just a bit of cleaning.

Any data on it?

It was nice to notice that the Profile drives can be reasonably “quiet” as well.. Felt like a new drive compared to the other ones. Found that that the disk was ProDOS-formatted, but SOS is able to read it. There were some Apple II data on it, the typical Appleworks data, some basic programs and games. Too bad i do not have Apple II profile interface card – but the data can be preserved with theh Apple /// as well.

..and ADTpro fails.

I installed the Uthernet II and used ADTpro 2.0.3 (for SOS) with Uthernet II activated. However, it would read about 60-80 blocks then start to give errors (XXXXXX). Transfered one DOS 3.3 floppy without any problems. hmm… what gives? Transfering whole 9728 block hdd would really take long time so another solution was needed…

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So, let’s just filecopy then.

I thought to use Robert Justice’s disk “SOS System Utils” with Problock3 driver. I had Booti-card in slot #2 with empty ProDOS 16MB HDD-image on it. Added regular .PROFILE driver to floppy. Checked and changed the name and slot settings for the profile drivers so they don’t conflict with each other.

File copy:
.PROFILE2 /PROFILE – interface card, driver and profile drive (prodos)
.PROFILE1 /HDD16MB – booti + usb + 16MB prodos hdd image 
->File copy

Copy the files:
.PROFILE2/=
To the files:
.PROFILE1/=

Took only few minutes and we’re done.

Cables and interface cards:

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I honesty didn’t know this – well i haven’t used the Profile very often so it hadn’t been something i’ve worked closely with. But. There are two different types, revisions if you will, Profile interface cards for the Apple ///.

Early card:
-DM1 and DM1 are 330 Ohm resistor arrays.
-Made before Oct. 1983.

Later card:
-DM1 and DM1 resistor arrays changed from 330 Ohm to 100 Ohm.
-Made after October 1983.

Cables: 
590-0046 Flat for either card type 100 or 330 Ohmm resistors.
590-0202 RFI shilded for only the new 100 Ohm resistor interface card.

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“Tower of /// Power”

I’m looking for Profile Interface card for the Apple II (820-5006).

FinApple 2020 (c)
Apple /// Forever.

 

 

 

 

 

 

 

 

 

The Ultimate Universal Power Supply for Apple II’s:

FIGHT THE POWER!

top_1_s

“The Ultimate Universal Power Supply” is the real ultimate solution to your Apple II what comes to power supplies. It have new case, “Ultimate Enclosure” by UltimateApple2 and the Universal Power Suply v1.3 bulit-in from ReActiveMicro. It supports voltages from 90-240V AC making it useable anywhere in the world. You just supply the correct power cable used in your country. There’s //e and IIGS versions available (different power connector) or you can choose “Universal DC output cable-set” for it as well. It provides both different power connectors and USB-A connector. (Reactivemicro.com)


INSTALLATION:

I wanted to replace the power supply i had in my “main rig” (Platinum //e) even it did have recapped “heavy duty” Applied Engineering Power Supply already. I have other plans for that one later. The “main rig” is filled with cards, mainly modern so they might not draw as much current as vintage cards would but still, i feel more confident with modern power supply solution installed. And it looks so modern too.

The installation itself couldn’t be any easier, just needed to unscrew and remove the original power supply and replace it with the universal one. It would have been nice if the package would have had the installation screws too, still very much of Plug-n-play.

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Universal DC Output Cable supports all models: II, II+, IIe and IIgs in the same cable. It also also has a 4-pin Female Molex and a USB-A Female connector for extra connectivity if ever you should need such.

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The cables that were not used, i just tide together and pushed aside. It was bit tight fit as i have the RamWorks IIII (reactivemicro) with the VGA-extender addon-board (a2heaven.com) installed, just where the power cables come out from the power supply’s enclousure.

It IS the ultimate solution!

rm_logo_jpgUltimate Universal Power Supply is available from https://www.reactivemicro.com/shop/

a2heaven_logo

Ramworks III VGA add-on extender is available from https://www.a2heaven.com/webshop/ 

Preview at Finapple at https://finapple.hho.fi/finapple/index.php/2018/11/24/ramworks-iii-vga-add-on-extender-palntsc/

FinApple 2019 (c)
Apple II Forever.