A500 doesn't work

Jan · 06 May 2003, 21:55

Something is not right with my A500. I set it back up after some months today, but it does not work.

After switching it on, the power LED stays dark, but the drive LED is lit all the time. The drive itself does not click like it should be, and nothing happens when I insert a disk. Plus, the monitor shows no screen at all. It's dark.

I checked the monitor with another Amiga, it is fine. Also the internal drive does not seem to be the problem, as the same happens with a different drive.

The CAPS LOCK led only blinks once when I turn the Amiga on, no more blinks after that. I think it always blinks once when you turn the computer on.

Any idea what is wrong?

Severin · 06 May 2003, 23:11

have you pushed all the chips back into their sockets and checked the floppy cables?

you could try the 'standard A500 engineers test' and lift it 6"/15cm (4"/10cm if your of a nervous disposition) above your desk and drop it

Jan · 06 May 2003, 23:29

I removed the 2,5MB expansion, and now I can see the Workbench hand, but the drive still does not work. Now both power LED and drive LED are lit all the time. The drive still does not click and nothing happens when I insert a disk.

And also, that round wheel at the bottom of the drive is constantly turning. Maybe that's the reason why the drive LED is always lit.

What could that be?

Checked the cables and chips btw, everything seems okay. Also did the engineer test, nothing happened

th4t1guy · 07 May 2003, 00:10

Not sure how this would affect an a500, but make sure the floppy cable is not plugged in backwards.

Jan · 07 May 2003, 00:24

I made sure it's plugged in correctly.

Floppy still doesn't work

Severin · 07 May 2003, 15:29

Quote:

Originally posted by Jan
And also, that round wheel at the bottom of the drive is constantly turning. Maybe that's the reason why the drive LED is always lit.

What could that be?

Check the switchs inside the front of the disk drive, sounds like the disk inserted switch is stuck down...

If not, it could be one of your CIA(8570) chips is damaged, it's a fairly common problem, to test this swap them over - you have 2 at the back of the mobo.

Jan · 07 May 2003, 15:48

The switch is okay, it can't be that on two formerly working internal drives the switch is broken at the same time. I'll check the chip tonight, I already figured it must be a motherboard problem.

EDIT: it's working now!

06 May 2003, 21:55	#1
Jan Junior Member Join Date: Aug 2002 Location: here Posts: 140	A500 doesn't work Something is not right with my A500. I set it back up after some months today, but it does not work. After switching it on, the power LED stays dark, but the drive LED is lit all the time. The drive itself does not click like it should be, and nothing happens when I insert a disk. Plus, the monitor shows no screen at all. It's dark. I checked the monitor with another Amiga, it is fine. Also the internal drive does not seem to be the problem, as the same happens with a different drive. The CAPS LOCK led only blinks once when I turn the Amiga on, no more blinks after that. I think it always blinks once when you turn the computer on. Any idea what is wrong?

07 May 2003, 15:48	#7
Jan Junior Member Join Date: Aug 2002 Location: here Posts: 140	The switch is okay, it can't be that on two formerly working internal drives the switch is broken at the same time. I'll check the chip tonight, I already figured it must be a motherboard problem. EDIT: it's working now! Last edited by Jan; 07 May 2003 at 20:48.

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06 May 2003, 23:11	#2
Severin Registered User Join Date: Dec 2002 Location: Gloucester / UK Posts: 700	have you pushed all the chips back into their sockets and checked the floppy cables? you could try the 'standard A500 engineers test' and lift it 6"/15cm (4"/10cm if your of a nervous disposition) above your desk and drop it

06 May 2003, 23:29	#3
Jan Junior Member Join Date: Aug 2002 Location: here Posts: 140	I removed the 2,5MB expansion, and now I can see the Workbench hand, but the drive still does not work. Now both power LED and drive LED are lit all the time. The drive still does not click and nothing happens when I insert a disk. And also, that round wheel at the bottom of the drive is constantly turning. Maybe that's the reason why the drive LED is always lit. What could that be? Checked the cables and chips btw, everything seems okay. Also did the engineer test, nothing happened

07 May 2003, 00:10	#4
th4t1guy Registered User Join Date: Mar 2002 Location: Kansas City, MO, USA Posts: 683	Not sure how this would affect an a500, but make sure the floppy cable is not plugged in backwards.

07 May 2003, 00:24	#5
Jan Junior Member Join Date: Aug 2002 Location: here Posts: 140	I made sure it's plugged in correctly. Floppy still doesn't work

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