FS: Three broken "new" A3640 accelerators

[redrumloa]

LINK

[dannyp1]

What is the number on U209 of these?  That will tell you what revision they are.

Dan

[alexh]

These are pretty robust boards. I would imagine they could easily be coaxed back into life.

Replace the CAPS, upgrade the PLD, perhaps replace the 040 chip.

Not sure you'd have any change left if you bought them, fixed them and sold them though.

What revisions are the 040 chips? I take it they are all XC68EC040RC25? i.e. old mask (hot), no MMU, no FPU, only 25MHz

[redrumloa]

According to the paper labels, 2 are 3.1 and one is 3.2.

[alexh]

For all intents and purposes a 3.1 is as good as a 3.2

As long as the silk screen on the PCB says v3.1 or you can visibly see the cut-n-jumper modification to the STERM*

It should be easy and cheap to repair the capacitors, perform the aforementioned cut-n-jumper if necessary, even  modify for over clocking while you are at it.

The CPU is the most important thing. Having to replace the CPU because it is dead, or it is an LC or EC would be the main expense.

So you need to know everything about them before buying. What is the version, mask, speed rating? Does the CPU work in another board? etc.

[redrumloa]

alexh wrote:
So you need to know everything about them before buying. What is the version, mask, speed rating? Does the CPU work in another board? etc.

If I did all that let work, I might as well repair them myself.

[alexh]

2 mins each to take off the heatsink and write down the numbers?

[redrumloa]

alexh wrote:
2 mins each to take off the heatsink and write down the numbers?

Cleaning the thermal paste alone takes much longer than that. Heck, I've burned through more than 2 minutes replying to you ;-)

I'm offering them dirt cheap for a reason, because I've exhausted all the time I intend to.