040, possible to repair?

[tokyoracer]

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

[motorollin]

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.

--
moto

[tokyoracer]

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.

[adonay]

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    

[utri007]

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

[CLS2086]

Hi,
check each junction between the CPU and the CARD !
my 1260PPC got a similar problem...

[tokyoracer]

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. :-(  :-)

[Matt_H]

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.

[tokyoracer]

If that site is in Beaverton, Oregon, then stay far, far, far away.

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retrogeekcomputers.com ?

[PG]

If you want to send it to Sweden, i can take a look at it.

[Ronmor]

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.

[tokyoracer]

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.

[PG]

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...

[tokyoracer]

So should I remove all of the jumpers on the cars as-well as the RAM card?

[PG]

No, only remove the RAM jumper + Ram card!