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[AmigaMance]

The fact that your Amiga boots with reset combo + 2 means that the 68040 is working. Perhaps you need to cool it down.

*cough* Ok... I made an error in this point and i think that i might gave you false hope. I just remembered what this combination does. It disables the accelerator and the on-board 68020 takes control. So it doesn't prove that the 68040 works ok. It doesn't prove that it doesn't work either.

[pyrre]

@pyrre
Have performed the timing fixes to your motherboard? What revision board do you have?
Also if you upgrade your o4o to an o6o any time soon, can you let me know if it does resolve your issues?

Yes, i have done the timing fixes. and i have a 1D4 motherboard. The timing fix helped on some stability. My 040 hung up after an hour or two in WB... Now it can stay on for days without hanging up...

Be aware some A1200 motherboards were incompatible with some accelerators.

[nine3o]

@ all

Guys thank you for your help in resolving this issue.

The card is now running perfect again (well from cold boot it does sometimes require a soft reset).

The fix??? Need to pay closer attention to detail :-D

I removed E123R not E123C!!! I replaced E123R and removed E123C and all is perfect again!!!

Thanks to all of you for your continuing support!!!

[DoogUK]

Nice to see a positive ending.....Enjoy your PPC!

[mrgreedy98]

i a similar problem it was cause (well i think) the reset line on the trap door was dirty and if i reset it it would not boot but if i powered down and left it off a wile it worked if i removed the card and pluged it in it booted up fine.

maybe the heat caused the board or socket to flex and loose connection.

when the board was cold it worked normally but not when it was hot

when i cleaned the trap door socket and pcb it worked great from then on

[rkauer]

When I fixed the Mediator passtrough, I discovered a pin who was slightly out.

This pin was one (of 2) responsible for the non-functional Mediator. The other was simply broken down.

What to do?

Whit a SMD rework solder station, I take the 1200 connector out of the passtrough, take the two problematic pins and replace them for two in the upmost pins of the very same connector, then re-solder it to the passtrough.

Now my Mediator runs like a charm.