040, possible to repair?

[chrisrot]

Hi,

you can buy them from Digikey (www.digikey.com).
Search for 74ACT16543 or 74FCT16543.
Just just need a good soldering iron... ;-)

greets
christoph

[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?

[chrisrot]

Hi,

they do ship to germany, so I think the ship to the UK. Try http://uk.digikey.com

You could try the Digikey part number 296-12973-1-ND, which is a TI CY74FCT16543ATPACT. They are on stock and have a minimum quantity of one. Looking at the data sheet they look the same as the IDT one on your card.
One problem with Digikey: When you order only a few parts, handling & poastage is quite expensive. I.e. 4 of these part cost about 3 pounds, shipping and handling would be 17 pounds.

greets
christoph

[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?

[Framiga]

are you sure it worth the effort?

looking at the "reworking" job, theres a lot of damaged traces (and seems some bad solders on some CPU pad pins also).

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

and one of them, has already been replaced. Don't know honestly if it worth the effort.

[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.

[PG]

Framiga,

looking at the "reworking" job, theres a lot of damaged traces (and seems some bad solders on some CPU pad pins also).

This is rubbish, what are you talking about??

The cpu was removed with hot-air technique and the holes were cleaned carefully with a Denon SC-7000 desoldering gun before installing a new cpu socket, NO traces are damaged on tokyoracers card and there is no bad solders either.
I use a high quality Weller soldering station and have more than 20 years experience in this kind of work.
Yes, one of the interface ic:s are replaced, this was an attempt to get the card working after testing almost anything else, if i had 4 new all of them had been replaced and hopefully the card had worked again.
(In fact, as i told tokyoracer, this ic was removed from a spare apollo card so i cant guarantee this ic is ok, either)

The reason why i suspect the interface ic:s is because it looked like some kind of fluid (water) have been on the card, the replaced ic:s pins were oxidated.

Of course it CAN be something else that is wrong with tokyoracers card but there is really not many components left on the card to suspect.

Check my track record and you will find only satisfied customers who has sent their cards to me for upgrade.
Until this day i have NEVER ruined a card by doing a bad soldering job.
Why i am upset about this?
I aint really, but i feel i have to defend myself to this kind of rubbish...

[alexh]

You cant tell anything from the photo. The light reflections off the solder can make things look different.