Welcome, Guest. Please login or register.
Forums
« previous next »
Pages: [1]   Go Down

Author Topic: Has my A4000D has finally died....  (Read 2790 times)

Description:

0 Members and 1 Guest are viewing this topic.

Offline marcusd666Topic starter

  • Newbie
  • *
  • Join Date: Apr 2010
  • Posts: 19
    • Show only replies by marcusd666
Has my A4000D has finally died....
« on: November 23, 2011, 03:44:46 PM »
Sorry for the long post up front....

Well I have got my A4000 out of the loft again after going the retro show in Blackpool.

Here is the config to get this part out of the way A4000 desktop 2 meg chip, Picassio IV, Warp Engine 040 with 96meg Fast Ram, Vlab Motion Capture Card, DVDrom, 2GB IDE, 1GB SCSI, Kick 3.1 v40.70 roms, Buster rev 11, Battery REMOVED.

I got it up and running last year and everything was working fine to a point with the ide hard drive slowly dying this time its a bit more serious.

It was working fine off the scsi drive then I set up a rad disk to install mui from a dms file. It crashed and started to reboot but this time the power light keeps flashing and it will not get past the start-up.

I have had it completely stripped and cleaned everything out and put it all back together and pushed all the socketed chips in. Still the same so started doing the process of each bit at a time. This time I noticed that without the fast on the warp engine I just get a grey screen no power light flashing but dim.

This pointed me to the warp engine so put my standard 030 board back in and this time the power light was flashing again the sequence is about 6 or 7 repeated flashes what I could count. It does not seen to mater what cards or ram is connected I just get the same problem even with just the 2meg chip and 030 board and original 3.0 roms.

Its been a long time that I have had to dig deep with an ANIGA hardware problem so any help would be great as I don't want to give up that easy with it.

Cheers
marcus
Logged
My Main AMIGA
_____________
A4000 040 Warp Engine,  98meg, Picasso IV, vlab y/c capture card

The rest of the family
__________________
A500+ kick2.0 GVP HD8+ rom switcher 2meg chip 8meg fast (still in box)
CD32 (Still in box) with some games.
 

Online Thomas

Re: Has my A4000D has finally died....
« Reply #1 on: November 23, 2011, 03:54:30 PM »
What does the screen show while the LED is flashing?
Logged
 

Offline marcusd666Topic starter

  • Newbie
  • *
  • Join Date: Apr 2010
  • Posts: 19
    • Show only replies by marcusd666
Re: Has my A4000D has finally died....
« Reply #2 on: November 23, 2011, 03:57:45 PM »
Hi Thomas, the screen show either no signal or grey its hard to tell on the LCD screen.
Logged
My Main AMIGA
_____________
A4000 040 Warp Engine,  98meg, Picasso IV, vlab y/c capture card

The rest of the family
__________________
A500+ kick2.0 GVP HD8+ rom switcher 2meg chip 8meg fast (still in box)
CD32 (Still in box) with some games.
 

Offline mohican

  • Newbie
  • *
  • Join Date: Feb 2007
  • Posts: 22
    • Show only replies by mohican
Re: Has my A4000D has finally died....
« Reply #3 on: November 23, 2011, 04:25:12 PM »
Try to swap or remove an put back the 50Hz oscillator near the cpu slot. My friend's A4K rested a year and when he try to power up the computer, the screen was black. He removed and put back the socillator and his machine works fine.
Logged
 

Offline marcusd666Topic starter

  • Newbie
  • *
  • Join Date: Apr 2010
  • Posts: 19
    • Show only replies by marcusd666
Re: Has my A4000D has finally died....
« Reply #4 on: November 23, 2011, 04:29:32 PM »
Will have a go now. i take its soldered in?

Cheers
« Last Edit: November 23, 2011, 04:33:18 PM by marcusd666 »
Logged
My Main AMIGA
_____________
A4000 040 Warp Engine,  98meg, Picasso IV, vlab y/c capture card

The rest of the family
__________________
A500+ kick2.0 GVP HD8+ rom switcher 2meg chip 8meg fast (still in box)
CD32 (Still in box) with some games.
 

Offline marcusd666Topic starter

  • Newbie
  • *
  • Join Date: Apr 2010
  • Posts: 19
    • Show only replies by marcusd666
Re: Has my A4000D has finally died....
« Reply #5 on: November 23, 2011, 04:40:39 PM »
Quote from: mohican;668795
Try to swap or remove an put back the 50Hz oscillator near the cpu slot. My friend's A4K rested a year and when he try to power up the computer, the screen was black. He removed and put back the socillator and his machine works fine.


If its soldered in I will have to try it at the weekend.:( and get hold of a new one.
Logged
My Main AMIGA
_____________
A4000 040 Warp Engine,  98meg, Picasso IV, vlab y/c capture card

The rest of the family
__________________
A500+ kick2.0 GVP HD8+ rom switcher 2meg chip 8meg fast (still in box)
CD32 (Still in box) with some games.
 

Offline 560SL

  • Full Member
  • ***
  • Join Date: Jan 2005
  • Posts: 197
    • Show only replies by 560SL
Re: Has my A4000D has finally died....
« Reply #6 on: November 23, 2011, 07:37:40 PM »
Quote from: mohican;668795
Try to swap or remove an put back the 50Hz oscillator near the cpu slot. My friend's A4K rested a year and when he try to power up the computer, the screen was black. He removed and put back the socillator and his machine works fine.


Most likely the oscillator. Quite common problem with A4000D.
Logged
AmigaOS: Forward Into The Past
 

Offline marcusd666Topic starter

  • Newbie
  • *
  • Join Date: Apr 2010
  • Posts: 19
    • Show only replies by marcusd666
Re: Has my A4000D has finally died....
« Reply #7 on: November 23, 2011, 08:44:05 PM »
Any ideas where to get a  50Hz oscillator ????
Logged
My Main AMIGA
_____________
A4000 040 Warp Engine,  98meg, Picasso IV, vlab y/c capture card

The rest of the family
__________________
A500+ kick2.0 GVP HD8+ rom switcher 2meg chip 8meg fast (still in box)
CD32 (Still in box) with some games.
 

Offline marcusd666Topic starter

  • Newbie
  • *
  • Join Date: Apr 2010
  • Posts: 19
    • Show only replies by marcusd666
Re: Has my A4000D has finally died....
« Reply #8 on: November 23, 2011, 08:50:21 PM »
Just had a quick look on the net and found this Click Me is this the one?

Cheers
Marcus
Logged
My Main AMIGA
_____________
A4000 040 Warp Engine,  98meg, Picasso IV, vlab y/c capture card

The rest of the family
__________________
A500+ kick2.0 GVP HD8+ rom switcher 2meg chip 8meg fast (still in box)
CD32 (Still in box) with some games.
 

Offline amigadave

  • Lifetime Member
  • Hero Member
  • *****
  • Join Date: Jul 2004
  • Posts: 3836
    • Show only replies by amigadave
    • http://www.EfficientByDesign.org
Re: Has my A4000D has finally died....
« Reply #9 on: November 23, 2011, 09:02:55 PM »
I have an A4000D in a huge tower case with half a dozen AmiLink serial deck controller cards and Video Toaster that I am parting out, if you can't revive your A4000, you could buy the motherboard from me.
Logged
How are you helping the Amiga community? :)
 

Offline mfletcher

  • Full Member
  • ***
  • Join Date: Mar 2008
  • Posts: 133
    • Show only replies by mfletcher
Re: Has my A4000D has finally died....
« Reply #10 on: November 24, 2011, 03:19:32 AM »
Quote from: marcusd666;668837
Just had a quick look on the net and found this Click Me is this the one?

Cheers
Marcus


Marcus,

If you're still having no luck, send it to JJB at Amiga Center France. He's quite skilled in repairing motherboards and accelerators. He changed all the capacitors on my A4000 mobo and upgraded my blizzard 040 to an 060.

http://www.amigacenter.com/Homer.html

Thanks,

Mark
Logged
 

Offline mechy

Re: Has my A4000D has finally died....
« Reply #11 on: November 24, 2011, 04:08:52 AM »
I would suggest checking the power supply for proper voltages before doing anything else.

Mech
Logged
 

Offline marcusd666Topic starter

  • Newbie
  • *
  • Join Date: Apr 2010
  • Posts: 19
    • Show only replies by marcusd666
Re: Has my A4000D has finally died....
« Reply #12 on: December 05, 2011, 10:28:50 AM »
Hi All, I have finally got round to checking the PSU of my A4000D I removed the unit out of the case and here are the Voltages....

+12v = 11.31
-12v = -11.96
+5v  = 5.06

These was taken with no load on the unit just plugged into the wall socket and a voltmeter across the pins, To me the +12v look down and looking on the AMIGA Power Supply Guide it's out of limit.

So the next is to fit a ATX power supply and see if that makes any difference I know on that guide it shows you how to do it but it does not mention anything about the what to do with the power button.

Cheers

Marcus
Logged
My Main AMIGA
_____________
A4000 040 Warp Engine,  98meg, Picasso IV, vlab y/c capture card

The rest of the family
__________________
A500+ kick2.0 GVP HD8+ rom switcher 2meg chip 8meg fast (still in box)
CD32 (Still in box) with some games.
 

Offline mousehouse

Re: Has my A4000D has finally died....
« Reply #13 on: December 05, 2011, 12:53:24 PM »
Quote from: mfletcher;668870
Marcus,

If you're still having no luck, send it to JJB at Amiga Center France. He's quite skilled in repairing motherboards and accelerators. He changed all the capacitors on my A4000 mobo and upgraded my blizzard 040 to an 060.

http://www.amigacenter.com/Homer.html

Thanks,

Mark


Well, not everybody's happy with them (like me). There are better alternatives IMHO.

Good luck getting your 4000 back up and running!
Logged
A3000T
 
Pages: [1]   Go Up
« previous next »