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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: tribz on September 30, 2008, 12:37:14 PM

Title: Compact Flash adaptor from eBay - Problem ?
Post by: tribz on September 30, 2008, 12:37:14 PM

Just received this adaptor from eBay. Check out the circled bits! I've run a meter over them and there is continuity between the pins. I'm guessing this shouldnt be so but I'm checking here just in case ...

http://www.datacenta.it/P1010107.JPG

Title: Re: Compact Flash adaptor from eBay - Problem ?
Post by: TCMSLP on September 30, 2008, 12:47:59 PM

That may be correct, or at least not necessarily incorrect.  The two right pins may be ground (or be pulling something to ground at least) ... similar with the other two pins.   I think CF and IDE are practically identical, but there may be a little fudging of certain control lines for compatability ... I'll dig out my CF-IDE adapters and check them for you ...

Title: Re: Compact Flash adaptor from eBay - Problem ?
Post by: TCMSLP on September 30, 2008, 12:51:12 PM

Mine don't appear to be shorted ... but that doesn't necessarily mean yours shouldn't be.  I guess the pins on the right are the 1st pin of both rows ... wonder what they are?   Does the seller on ebay have a close-up pic on another auction?

I'd be surprised if a large manufacturing plant had such quality control problems but I guess it could happen ...

Title: Re: Compact Flash adaptor from eBay - Problem ?
Post by: tribz on September 30, 2008, 12:57:49 PM

This was the auction ...

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=130257452903

Pins look nice and clean on that one.

Also, I'm not sure which end pin1 is. As I've recently killed an IDE express board plugging the HD in the wrong way round, I'm being ultra cautious now!

Title: Re: Compact Flash adaptor from eBay - Problem ?
Post by: alexh on September 30, 2008, 01:01:58 PM

Quote

tribz wrote:
I've recently killed an IDE express board plugging the HD in the wrong way round

Surely not? This is a very common mistake on non keyed cables. I find it hard to believe it wasn't more robust by design for this situation.

Was it a new board?

Title: Re: Compact Flash adaptor from eBay - Problem ?
Post by: mrmkl on September 30, 2008, 01:47:19 PM

I think it has two supply voltage pins shorted at the center pins, and the pins at the edge are grounded, so it seem ok. (try googeling CompactFlash pinout)

Title: Re: Compact Flash adaptor from eBay - Problem ?
Post by: Kilt65 on September 30, 2008, 02:01:21 PM

Small point...the unit you received is not the same as the one you bid on. Maybe me being pedantic!

Title: Re: Compact Flash adaptor from eBay - Problem ?
Post by: tribz on September 30, 2008, 05:19:46 PM

Quote

alexh wrote:

Surely not? This is a very common mistake on non keyed cables. I find it hard to believe it wasn't more robust by design for this situation.

Was it a new board?

Sure was. Made a lovely burning smell as well! I cant remember if I plugged the IDE express to the mainboard incorrectly or the HD to the IDE express..

Vendor been in touch about the CF adaptor and confirms its a fault.

Title: Re: Compact Flash adaptor from eBay - Problem ?
Post by: orange on September 30, 2008, 06:46:57 PM

I think the problem is in last (treated like first) four pins that carry power supply (if that's A1200/600). if they are 'grounded' bad things happen.

Title: Re: Compact Flash adaptor from eBay - Problem ?
Post by: ZeBeeDee on September 30, 2008, 07:29:39 PM

Matching the orientation of both the ebay picture and my own (now redundant) CF adapter ... pin 1 is on the left

Title: Re: Compact Flash adaptor from eBay - Problem ?
Post by: tribz on September 30, 2008, 09:12:44 PM

Quote

ZeBeeDee wrote:
Matching the orientation of both the ebay picture and my own (now redundant) CF adapter ... pin 1 is on the left

Thanks :)

Title: Re: Compact Flash adaptor from eBay - Problem ?
Post by: orange on October 01, 2008, 10:36:46 AM

BTW, it should have square 'base' unlike all others which are round.

Title: Re: Compact Flash adaptor from eBay - Problem ?
Post by: tribz on October 02, 2008, 05:47:37 PM

Just got the replacement today ... exactly the same!!

Oh well, tried it and it works fine ... phew!