Commodore Amiga CD32 late Prototype

Hi,

today i got my CD32 prototype unit and i like to share some information and pictures.
The Region is unknown, i think depending on the EPROM.
Also market as low Audio outputs, no color. Im not sure but this problem is because the two caps in the middle. They dont look very good for me. The drive marked as sample.












When i connect the psu nothing happens... i mad a shot of the caps with psu input.

 

The caps seem a little bit bulky on the top.

 

^^ i see it, ever so slightly, where the cap seal is on the foils, barely poking up on a tilt!
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just crawled out of the coffin! (appreciate the heads-up)
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that is AWESOME...
just give her a little TLC (clean up the EM shielding)
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thanks for posting images, get that serviced, fire it up and let loose! :friendly_wink:
[edit]
typo...

 

i ordered a complete setup of new caps. Will be the best to replace them all for pannasonics. And of corse switch the two ones on top in correct +/-. Hope that will help. And thanks for the tip, i also clean the EM shielding.

 

I don't recall any Amiga's having the region in ROM. I believe the Alice is jumpered to PAL/NTSC & the ROM detects that.

It's odd that it's dated October 1993 as Wikipedia says it was launched in September.

It would be interesting to see the rom dumped. It's labelled 40.16, while retail units were 40.60

 

Was also my first thinking, strange.

After my last dissaster with ripping eproms, i leave it as it is...

 

Supposedly there was a rev 4 & 4.1, so this might have been for testing the rev3 to rev 4 changes.
Strange they'd use an old rom, it's one of the reasons I'm intrigued as the contents. If you ever get a floppy drive hooked up to it then it's possible to save the rom that way (I ripped the A600 and A1200 kickstart from demo units in a shop back in the day).

It's also strange that the cd32 only has 1 x 16 bit kickstart rom, while the A3000/A1200/A4000 have 2 x 16bit roms so they can run code in rom full speed.

 

took a while to spot it...
eeprom bank chip, set in a single socket relief, lower right of image.
i can safely say, NEVER seen a 32 bit amiga with a single kickstart rom, EVER!
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i truly hope the system can be got up and running, would be cool to see what version of rom os it's packing!
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had noticed a slight burn mark on the pcb, the image with the two capacitors...
between the two capacitors.
hoping it's just flux and nothing more!
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:friendly_wink:
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[edit]
typo..

 

Thanks for the infos guys. I think the cd32 board is good to fix. On next weekend i will change the caps, we will see if this helps.

Also when i find a SX i will dump the rom, with your help of corse ^^.

 

no, always TWO rom sets!
where the eeprom is, another chip normally would be!
smf hit the nail on the head with the retail 32 bit amiga versions having dual rom bank!
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[edit]
may prove useful?

 

That cap damage, can it be possible that the board has no funktion? I read only about bad sound/picture. Maybe the resistors you say...

 

i honestly couldn't say, i need to be at the cd32 itself!
but if other threads are to go by, get replacement capacitors, resistors and diodes of equal values/dimensions, and check each item on the board, pass/fail then move/redo.
and onto the next component!
i don't have the skills to finely solder on an electronic scale, just electrical!
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i recommend signing up to a dedicated CBM/amiga forum and getting info/advice from there too!
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apologies, but my help right now would be no use, i'm out my depth!
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in any case, all the best to repairing her! :friendly_wink:

 

my solder skills gone over the years, caps will be no problem. That smd caps, i will do some practice on other board before. But anything about that a professional musst be do some work.
Maybe Bad_ad, i think he is skilled in such things, more as i for sure ^^. But ok we will see..
Maybe he did some work on a amiga before. I think the Amiga was popular in the UK.

 

^^ aye, hit him up, he may help? (and knows his shit) :friendly_wink:
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true, the CBM range was very popular in UK, even in the sound trade and finance! (used to have commodore ATM's just down the road from where i live and AMS-NEVE also used CBM parts in their studio decks! NEVE is a lancashire based company, not far from where i live!)

 

I try today to desolder such SMD Caps on a PS3 board but now i know i do not touch them on the cd32 board...
The Big caps will be ok, when unit still not work after that, than magic hands will help

 

fair enough!
would it be possible to post images of the repaired board, if you're successful? (you should be ideally)
even a clip showing it in action?
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really rooting for yer!
good luck on repairs! :friendly_wink:

 

Nice unit! Personally i love everything Amiga, so i wish you good luck bringing this lady back to life.

Btw, did you compare the pcb to a regular one?

 

Cool, did you share this on English Amiga Board? they may know more about it

 

Hi,

i think its a retail V3 board only the kickstart rom and socket is different.
No, here is the first place i share .

today i change the big caps. But this dont help. On TV when i push the power switch i got only a grey screen. Well something comes out but..
So i will ship this board for repair to a member here. Im pretty sure he will bring the cd32 back to full function.

 

(making progress it seems?!)
that grey screen is the bootup, a few shades of grey on powerup then rom os screen.
you haven't got that far yet, but you got something...PROGRESS!
keep at it, and please keep us in the loop! (seriously, BEST thread on site EVER!) :cocksure: