A590 not booting regularly

[codeman]

My A590 boots not always(although KS 1.3 is in place).The power is on , but no activity when starting up.Shutting it down en restart sometimes works.What could be the problem?

[Motormouth]

Has it had the power hack to use the A500's power supply?  If so do you have a big enough power supply on the A500?

Does the A500 work without it being connected?

[codeman]

My A500 has the original power supply.
It works without the HD connected.

[Oldsmobile_Mike]

Slow spin up of the drive / failing drive is a pretty common problem. Also insufficient power / failing power supply.

As previous comment said, have you done the A590 power hack on this unit?

[codeman]

No , I hae not .
How is it done ?

[shaf]

Early A590's used XT MFM not SCSI HDDs which are very unreliable. The drive might be failing, slow spin up is one indication of an older drive failing.

[Oldsmobile_Mike]

No , I hae not .
How is it done ?

http://members.iinet.net.au/~davem2/overclock/a500hd.html

Only do this if you have a card reader or SCSI2SD (or similar solution) installed.  It works with an old-fashion mechanical hard drive, but the amount of power they draw can be pretty high and is not recommended.