Happy new year to all!

Since a few weeks my Pegasos 2 has been doing a strange noise while functioning either under MOS or Linux.

I could no experience other strange effect related to the occurence of this noise.

This noise is very much similar to the "clack" made by the pegasos when powered off.

Does anybody out there know what is happening?

Hard disk approaching to the deads land?

Other people have suggested the same.

Guess it's time to buy a new one and make back-ups.

RIP

Quote:

yes, here is the same:
the noise sounds like the hard reset and it seems to be an electrical problem.

but it doesn't hangs the system.
this noise started many weeks ago here and it's very random..
I've tried others IDE cables and power cables but the problem is the same.

it should be an HD fault, but a mobo fault too: my pegasos2 has "normal" start problem:
I must to press "reset" to unlock the system just after power-on..

hi,
take a time to blow all the dust in your system, that can produce static ! (even in your PSU)
Take a time to analysis every condensator head, if they are not flat they have to be replaced.
Like all the other said, try your system with few peripherals : CPU, RAM, CGX.

I had a similar problem with my PC, it was the Power botton that doesn"t the ATX PSU...

OK so here is the end of the story for my part. First I bought a new HDD to back-up my data; then further to Yomgui's advice on Amiga Impact I unplugged all peripherals from the Pegasos, then performed boot session with just one at a time to isolate the culprit.

it turned out two of my HDD were making some noise on shutdown.

As one happened to freeze while several "tack" noise occured, I decided to replace this one.

Thanks for your advice.

@beNZo: since I replaced the faulty HDD and re-ordered my IDE chains I feel Pegasos freeze on boot-up is less frequent (it was nearly 100% on cold boot when I connected the third drive but I think I did not took care of some jumper at that time).

Taerwin

Are you using 80 WIRE IDE cables for those drives? Also, Bplan recommends FLAT high quality shielded 80 pin UDMA IDE Cables fyi. I run 2 Hds and 1 optical drive np on my peg.

magnetic

hi Magnetic!

Yes I'm using 80 wire IDE cables. Yet it seems to me the wire bundle is round - not flat.

As for shielding I don't know - I don't think see in fact: the wire bundle overbraid seems plastic.

Quote:

Round cables are preferred because the air flow in the case is not blocked by flat cables.

I can't understand a recommendation to use flat cables.

The advantage of flat cables is a better signal, because of less crosstalk. Round cables are rather undeterministic which wires will come close together ...
Nevertheless I'm sure that cables are not the source of your problem ..