FS: Three broken "new" A3640 accelerators

[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

[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.

[alexh]

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