Cisco PIX 506 stops at loading

Do you ever get to a rommon prompt, or does it just hang where it is there?

I'm starting to have a lot of my client's 506E's dying due to fans on the main CPU failing, they overheat pretty quickly... but not THIS fast. But you could check that anyhow, its quick. Pop the cover and see that it's spinning and not clogged up. I've replaced a few for the more budget constrained, but most I move up to an ASA 5505 or 5510, its wildly more powerful & flexible. If you do pull off the heat sink though ( i wouldnt recommend that unless you are swapping the heatsink), make sure you apply more thermal compound to the bottom before reinstalling it, and make sure its in full contact with the CPU.

You might also try replacing the SIMM onboard the PIX with a known good new one, I'm fairly certain its just plain old PC100 SIMMs, you should be able to use a PC133 as well if you've got one in an old PC somewhere. If its a memory chip glitch, that is a quick easy cheap fix.

It hangs early than rommon appears. Also I think that is not hardware failure, because as we see self-tests are passed. Can I re-flash rommon manually? May be via any service connectors?

Well, I see the beginning of the device inventory in there, but none of the memory or CPU  diags firing off, so while I agree the boot process started, I wouldn't say that self tests passed.

And unfortunately I know of no way to reimage the PIX boot ROM. I believe its a soldered on SMT chip as well on the 506, so I don't think you can just pop in another one from a working one to test either.

oh, there may be 3 pins, just connect the 2 that arent and then put it back as it was

Thanks, I'll try. Only then found a BIOS chip ;)

if you are not sure, i can make a picture where it is, just let me know

Send it please.

Ok. I'm resolve the problem. J5 jumper change the position, also I remove battery and start it. After that everything is OK.

So your Pix boots again ? Then everything is cool. If your baby does it again, well now you know what to do :)

So you didnt really resolve it without my tip about the bios jumper. So be fair about it.

2shirkan: I'm really sorry, I'm not correct translated you comments about jumpers! Of course I accept you solution, but I'm resolve it by myself ;))