I got ripped off on a dead Amiga 4000

[koaftder]

FC74HCT166T is the identifier on the chip below that it says 323820D and KS59310PBY

I don't nee that other one I guess because that just controls the RTC.  I also need a new IDE connector to solder to the motherboard.  Looking for both these things at the site.  Cannot find the FC74HCT166T chip.

Is it a DIP chip? See this:
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=296-2099-5-ND

For the IDE connector, see this: (could somebody double check that to make sure it's the right one?)
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=MHB40K-ND

[ceaser]

Is it a DIP chip? See this:
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=296-2099-5-ND

For the IDE connector, see this: (could somebody double check that to make sure it's the right one?)
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=MHB40K-ND

yes those are the ones!  good job finding them.  it cross references with what's on the chip.  and that's the type of ide connector i'd solder in if I have to.  Because the floppy and IDE connectors are so close together though it might be a tight squeeze.  Still that's basically the part i was looking for.

Thanks

[Drac]

Maybe someone has mention this before but..


Also check the CIA 8520 chips.  

The CIA A handles mouse and joystick ,keyboard signals.

http://www.natami.net/dev/Hardware_Manual_guide/node012E.html


They are the first I check if an Amiga goes crazy .

These chips has given me some strange errors over the years :madashell:

If they are socketed, try to switch them.


Happy hunting

[ceaser]

Maybe someone has mention this before but..


Also check the CIA 8520 chips.  

The CIA A handles mouse and joystick ,keyboard signals.

http://www.natami.net/dev/Hardware_Manual_guide/node012E.html


They are the first I check if an Amiga goes crazy .

These chips has given me some strange errors over the years :madashell:

If they are socketed, try to switch them.


Happy hunting

Any idea how this chip you mention is notated on the motherboard (i.e. Uxxx)?

I bought a replacement for U175 which is a FC74HC166T, and it's exact part number is CD74HCT166E.  But it cross referenced with the exact # listed above there.  DigiKey.com is where I got it thanks to another poster a page or 2 back (the big schematic posts you'll see looking back).  These chips are cheap and if I get the right ones I can pay this shop to get them soldered in cheap probably.  I really suck at soldering and am only really able to solder wires or resistors into place.  Also I bought a better IDE interface because I'm sick of having to worry about it breaking every time I hook that part of it back up.  It's a grey one with the guides on the sides so you don't have to shine a flashlight and take 2 full minutes hooking it up.  Of course that would require desoldering the old one and getting it out first.

Which notation on the motherboard is this chip given that you are suggesting may be causing the trouble?

[tone007]

The chips should say 8520 on them, I believe.

[Drac]

If my memory serves me right it's U300 and U350.
They are located in right top corner(under the powersupply) if looked at the front of the computer. They are the same chip and place side by side.

They are surfacemounted from the factory , but I always solderes sockets when they where broken. Easier to replace :biglaugh:

Hope this help's

[recidivist]

I almost wish someone could make a run of NEW replacement motherboards -my recent Amiga 4000 purchase is behaving about the same as yours.
I hereby admit extremely poor judgment in spending significant money  without verifying full functionality first.

[new2amga]

The question I would ask would be how much it would cost to make a run of these boards?  On top of that whom would we have to contact company-wise to do so?  I'm with everyone else here when it comes to A4000 motherboards.  When I took mine to be repaired by Ed Jeffries, he worked on it, and thought it was fixed, but it didn't work.  He ended up replacing the motherboard for me.  There can't be many of these boards left.  I would try to chip in for something like this if it was possible to do another run on the boards.

[Drac]

Do you want the pcb or a fully populated board with all the trimmings?
If it's a single layer it's easier to copy.

I guess the only one who would care is our "friend" Amiga.Inc ?
Due to their naming rights..??...
And I hear they are very easy to contact :lol:  

[ceaser]

The seller says that because I posted the Amiga I bought from him on this forum and his friend told him, he doesn't have to help me.  I got the computer on June 22nd and didn't post here until July 6th.  There aren't any working motherboards for the Amiga 4000 on Ebay right now and I just bought a new Amiga 4000 for $575.  Thanks to whoever told this guy I posted!

[gaula92]

Ceaser, and the rest of you: Let's KILL this people's bussines. They basically RIP US OFF: an old A4000 souldn't be more than 50$, it's prehistoric technology, damnit!!!

DON'T BUY OLD HARDWARE: it's basically old and it's bound to fail in a very shot time. It's just stupid! And there's people getting a lot of momeny for it: FUCK THEM, DON¡T BUY.

If you want Amiga, go NEW hardware without bastards like the one that sold you taht Amiga 4000. It goes like this:

-Do you want classic amiga for chipset games? GO MINIMIG NOW.
-Do you want WB apps on OS4/MOS? GO SAM NOW.

There's NO NEED FOR OLD HARDWARE. Avoid being ripped off. Just be smart.

[wawrzon]

@ceaser: what a lame excuse of him (the seller)

[PulsatingQuasar]

The seller should be banned from EBay. He has ripped you off by selling broken hardware.

Most buyers are stupid too though. This is 1993 hardware people. *ALL* Amiga 4000 need repairs. The battery needs to be replaced and also ALL the electrolytic capacitors because they are mostly gone too.

If you buy an Amiga 4000 please keep in mind that it needs at least the above fixes to keep it happy and running. It should affect your bidding price.

Most A4000 need work on the electrolytic capacitors because they used some bad ones and because the Amiga 4000 design makes it run quite hot in there which shortens the life span of those capacitors. Though I suspect that the next few years also Amiga 1200 computers will get problems related to capacitors.

[alexh]

The seller says that because I posted the Amiga I bought from him on this forum and his friend told him, he doesn't have to help me.

This is not a legal argument. You can post to any forum you like about whatever you like, but if the terms and conditions of the sale and the insurance you have with your purchase are valid then you CAN make a claim against the seller regardless.

Don't give him any room to manoeuvre. Keep up at him and your credit card company / pay pal, ebay or whatever you paid with.

I just bought a new Amiga 4000 for $575.

Seems a lot. The price of "bare bones" A4000 EC030's has been dropping in the UK. They are averaging about £155 ($248)

Thanks to whoever told this guy I posted!

I'm pretty sure it was google. Doubt this guy has any friends.

[alexh]

*ALL* Amiga 4000 need repairs.

I would question this statement. Non of mine need repairs, nor have they been repaired in the past. While I think you have to prepare for the worst, they don't !*ALL*! need repairs.

The battery needs to be replaced

Removed, not necessarily replaced. I would say most A4000's that are still working have already had their batteries removed.

and also ALL the electrolytic capacitors because they are mostly gone too.

I checked mine, all are fine. No bulging, no leaking.

[Daedalus]

Google's my friend :-) I agree with AlexH, he's just trying to fob you off. It doens't matter who you tell, your rights aren't affected. Mind you, it's probably courteous to try and sort it out with someone in private before telling the world about it, because at the end of the day, it could well have been working when he shipped it. But if you want to claim for it, you're no less entitled to do so just because you posted it on a forum.

Personally, if I sold something as working and it was DOA, I'd expect a chargeback; however, I'd also expect to get the broken item back because there's a change I might get it repaired, rather than the buyer just keeping his money and my item. But hey, that's not the real world any more, is it? *sigh*