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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: tokyoracer on October 24, 2007, 01:35:50 PM
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I received a non working 040 in a BIG lot of Amiga stuff.
Symptoms are very simple really, it will not display anything other then a blank screen (but the AV3 icon on the TV is always on so doesn't even seem to display anything what-so-ever). The fan powers up ok and apart from the battery which isn't in good shape it all looks ok physically.
I have taken a couple of detailed scans if anyone wants to see...
Side 1: http://i33.photobucket.com/albums/d74/celliot/0401.jpg
Side 2: http://i33.photobucket.com/albums/d74/celliot/0402.jpg
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First thing, does a different accelerator work in the same Amiga? Also do you have an Amiga with a different revision mobo? I had severe problems with certain cards using a particular revision A1200 mobo.
Also, do you have different RAM you can try? Tried cleaning the contacts? Short of that, it might have to be off to France :-( I think a black screen with not even any coloured flashes probably means the CPU isn't doing anything - either because it's dead itself, or some other part of the card is.
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moto
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Was rather hoping I wouldn't need to remove my very complex 030 card, I'l get to it shortly and let you know how it does.
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Some Apollo boards have some timing issues with both the 2B and 1d4 amiga1200 motherboards believe me i know ,,, you may encounter problems such as non boot on cold boot (black screen)or even flaky operation hang etc ... the first thing i would do is too make sure is that the eprom (black legged chip in socket) on the apollo is seated correctly nuber two would see if the jumpers are right .. "do you have the manual ? " also the crystal oscillator may not sit correctly and the last ofcource would be too solder timing fixes on motherboard :-) if possible
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I tried my apollo 040 with rev 2b mobo, it didn't work at all, with 1d4 mobo it work with 3.0 roms with 3.1 roms no hope.
I use RemApollo softkick 3.1 roms
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Hi,
check each junction between the CPU and the CARD !
my 1260PPC got a similar problem...
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Ok I tested it and the same result on the other 1200. I was wrong about the TV, it does boot but only a blank screen. I received an e-mail with a link to an American site who dedicate themselves to repair Amiga and Atari stuff. I'd rather see if it can be sorted easily first before I start sending it off but any other tips and/or ideas would be much appreciated.
Sorry but allot of the replies are a bit new to me. I'm not that well up on technical Amiga language. :-( :-)
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I received an e-mail with a link to an American site who dedicate themselves to repair amiga and atari stuff.
If that site is in Beaverton, Oregon, then stay far, far, far away.
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If that site is in Beaverton, Oregon, then stay far, far, far away.
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retrogeekcomputers.com ?
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If you want to send it to Sweden, i can take a look at it.
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Check the cooling fan wires where they are soldered on the board might be shorted. You might try another 04 cpu chip, will cost a little $$ but it could be the problem.
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The fan works fine, but i'm not sure if this chip is removeable as there is no plastic mount I can see on the side of the card.
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Try the card without memory installed (remove the ram jumper also).
If the card works now you have a problem with the memory stick or the memory controller IC (Mach 210).
If the Mach 210 is the problem, i have new in stock.
(This IC is a PLD, an empty Mach 210 will not work!)
You can also have a problem with the bus chip, Mach 131.
Or the cpu, but its soldered to the PCB...
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So should I remove all of the jumpers on the cars as-well as the RAM card?
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No, only remove the RAM jumper + Ram card!
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Sorry if this is a dumb question but what one is the ram jumper?
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No problem.. :-)
The ram jumper is marked RAM on the PCB and is located near the battery!
This jumper should be removed when you have no memory installed and closed when you install a ram board.
Dont remove the clock jumper that is marked CLK.
This jumper should be closed in the 040 position.
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Nah, I removed it and the card but it's still the same outcome. :-(
The horizontal pins are marked (left to right): 060, CLK, 040.
Vertical (left to right): RAM, SCSI, 060.
^ If that helps? It is back to how it was pictured.
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What is your a1200 motherboard revision ?????
It's printed near accelerator connector.
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I'm testing it on all sorts of 1200's. Well 3 different machines. I don't yet have the heart to dismantle all the models as it's allot of effort. I'm guessing if it doesn't work on any of them then it's the acc. at fault I'm guessing.
I might do it a little later on if it will really make a difference.
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My apollo 040 doesn't work at all with 3.1 roms.
What roms you have?
All amiga technologies a1200s was equipped with rev 2b mobo, you have good changes that accelerator is not broken
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I got 3.1 but one of the 1200's I tested it on has 3.0 and was exacly the same.
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tokyoracer wrote:
If that site is in Beaverton, Oregon, then stay far, far, far away.
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retrogeekcomputers.com ?
There are some amiga.org members that claim to have been scammed by this guy.
But anyways... there is a amiga repair centre in france that has got very good reviews from customers, but i sadly do not remember the link for them. Does anyone else have the link?
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Links to repair sites would be much appreciated. :-)
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Amiga Center France (http://www.amigacenter.com/)
I think this is the one that everyone normally recommends.
Andy
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Links to repair sites would be much appreciated.
Amiga Center in France (http://www.amigacenter.com/)
Ive got my PPC with them at the moment to see if it can be fixed (It arrived this morning, yay)
oh and I have an Apollo 040 and after cleaning the connector on it and doing the timing fix on my board it works 100% of the time
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Thanks for that link. It all looks promising but i'm not sure what contacts to clean, how or what to use.
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Ok, so now at least we know that you dont have a memory problem..:-)
As said before, if you cant get your card working its possible for you to send the card to me in Sweden if you want.
I have both PLD:s and can replace the cpu if its faulty.
If i cant repair it, you only pay the shipping cost...
PM me for details if you are interested.
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Sent PM. =)
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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! :-)
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Sorry to triple post but just to alert people it is in for a replacement CPU at the mo. Hopefully this is the solution. :-)
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Was the apollo 1240 ever fitted with SCSI onboard?
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A tip: if the CPU is broken, take the opportunity to upgrade the processor to a 68060. It will cost more, but in return you'll have much more "horsepower" and less heat.
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And another little help: here (http://amigahardware.mariomisic.de/cgi-bin/showhardware_en.cgi?HARDID=110) is the link to the Big Book of Amiga Hardware, where you can find the correct settings to board jumpers.
Hope it helps.
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Maybe this is a dumb question..
But have you removed the battery??
A broken battery can cause the problem you have!
Sorry for my grammar :roll:
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A quick look at the photo and it looks like battery acid has eaten tracks around the battery.
Remove battery, clean with a mild solution of water and white vinegar and some cotton buds.
produce some more close up photo's showing the damage.
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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! :-)
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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. :-)
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if not exactly the 74FCT16543TVP's are available there should be replacement parts you can use I found some at IDT and also at TI
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IDT, TI? Not sure what your on about there, sorry.
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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.
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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! :-)
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tokyoracer wrote:
IDT, TI? Not sure what your on about there, sorry.
idt (http://www.idt.com)
TI (http://www.ti.com)
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tokyoracer wrote:
IDT, TI? Not sure what your on about there, sorry.
TI means Texas Instruments, IDT is another ic company (don't remember quite now the right name). Look for 74FCT16543TVP in Google.
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Hi,
you can buy them from Digikey (www.digikey.com).
Search for 74ACT16543 or 74FCT16543.
Just just need a good soldering iron... ;-)
greets
christoph
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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?
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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
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£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?
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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.
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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.
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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...
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You cant tell anything from the photo. The light reflections off the solder can make things look different.