040, possible to repair?

[tokyoracer]

Sorry to double post, first real action now and will be sent off to Sweden and hopefully it is a CPU issue. If not then the troubleshooting will bigin... Again. >.< Which I hope won't happen.

Fingers crossed & thanks PG! :-)

[tokyoracer]

Sorry to triple post but just to alert people it is in for a replacement CPU at the mo. Hopefully this is the solution. :-)

[tokyoracer]

Hi, sorry for not replying people, I didn't realise this topic was still active. The card is being returned to me and according to PG (having no luck getting it working) the following things have been tried & tested:

* Cpu
* Eprom
* Both mach PLD:s and memory stick
* New headers and jumpers (battery acid on old ones)
* Tried it with 060 cpu also..!
* New socket for the crystal oscillator
* Crystal oscillator
* The connector (cleaned)

I'm not sure if he has looked at the battery so I'll e-mail him now. Oh and I am not aware if it has had some sort of SCSI system or not as I havn't had it from new and I bought it as a faulty card.

Just to add PG thinks it's the 4 74ACT16543 IC's that are broken but aparently arn't avalible new anymore. If anyone can help me out here then I would be massivly greatful.


Any further help will be much apriciated! :-)

[tokyoracer]

Oh I have a reply, he has apparently removed the battery as it was leaking. I replied asking if there is any damage to the card itself, hopefully there isn't. Either way I will do some more scans when it arrives. :-)

[tokyoracer]

IDT, TI? Not sure what your on about there, sorry.

[tokyoracer]

Sorry to double post (AGAIN) but I got a reply about the battery from PG. I hope he doesnt mind me forwarding his messages on but this is what he said, and I do quote;

"No, I really suspect the 4 interface ic:s (74ACT16543)
The battery leak wasnt a big problem yet, but could have been in the future.. :-) "

I will still show scans of the card again as soon as it arrives.

[tokyoracer]

Good news, the card has arrived and have done some scans of it.

Now:

Side 1: http://i33.photobucket.com/albums/d74/celliot/Scan10001.jpg

Side 2: http://i33.photobucket.com/albums/d74/celliot/Scan10002.jpg

Before:

Side 1: http://i33.photobucket.com/albums/d74/celliot/0401.jpg

Side 2: http://i33.photobucket.com/albums/d74/celliot/0402.jpg

Battery has been removed as you can see, the area looks spotless amazingly! :-)

[tokyoracer]

I could only find "FCT" ones from IDT but I came up with these:

http://focus.ti.com/docs/prod/folders/print/74act16543.html

http://catalog.digikey.com/scripts/partsearch.dll?Detail?name=74ACT16543MTD-ND

http://www.idt.com/?app=search&searchType=partNumber&search=74ACT16543

Simple questions are how much are they/how do I find out, do they ship worldwide (to the UK to be more precise) and can I get the 4 I need without buying eleventy-million?
Oh and does anyone know what their service is like?

[EDIT] Just noticed there are several variations of this, what one do I need or does it not matter?

[tokyoracer]

£21 is just too much for 4 simple chips, there must be a cheaper option. :-?

Does any other repair company have these at their disposal?

[tokyoracer]

I see what you mean, one of them does look like it's been replaced before. Looks as if selling it would be the best option at this rate.