Magnum 040 accelerator - Page 2

JACK98 · 25 May 2009, 15:34

Anyways,i think its time i will have to tower the A1200.Don't think the card squashed in with heat along with half way hanging out without trap door is good for its health!

NovaCoder · 26 May 2009, 00:48

Yep 040's and 1200D's don't go well together, either upgrade it to an 060 or stick it in a tower (or upgrade to an 060 AND stick it in a tower!)

JACK98 · 26 May 2009, 00:56

Tower it is so

JACK98 · 27 May 2009, 19:06

This thing is still driving me nuts,the A1200 decides to restart and reset so often.So its either the motherboard or the card thats faulty.I have the enough power *goliath*,i even ran the comp with the cover on to get more ventulation but the thing still decides to restart

.I just seen a smiliar post here,that could be the sheeting or dirty contacts that make it go wonky.

http://eab.abime.net/showthread.php?p=520061

rkauer · 27 May 2009, 20:01

AGAIN: measure the power rail on the 1240 card before blaming something. You must read more than 4.85V on the two little jumpers visible on the accelerator. Need a picture?

JACK98 · 27 May 2009, 21:09

yes picture please..

rkauer · 28 May 2009, 03:04

As you wish.

JACK98 · 28 May 2009, 21:29

Hi thank you for the picture.Friend of mine measured the voltage going through and it came up as 4.84v. So im below the recommended v reading...

rkauer · 28 May 2009, 22:51

Time to clean the trapdoor socket and accelerator's socket too. Will suffice.

If not, you need to route a pair of wires from the power socket on the far left side of Amiga to the floppy connector and feed the floppy with long wires, too. Some will say it causes ground loops, but as far as I tested it don't cause any hassle to A1200.

JACK98 · 28 May 2009, 22:58

Doesn't sound too hard.Any photo or diagram i can copy from lol.Oh an another question,i see it has an 060 jumper.So could i in theory take out the 040 cpu and swap the cpu for 060 and set the jumper to 060?

rkauer · 29 May 2009, 02:59

Not that easy.

You need the power regulator to bring down the 5V to 3.3V (or the 060 will fry) and change the soldered CPU and ROM for new units.

JACK98 · 23 June 2009, 22:49

Think i will have to clean the motherboard/apollo connectors with ethanol.i have the A1200 towered up,the floppy port has its own power supply from the pc psu,but the machine still crashes often with 040.Anyways i swapped the ram for 16mb and it clicked in perfectly no problems now.

JACK98 · 13 July 2009, 23:07

The 32mb simm is double sided so.one side clicks in,other doesn't due to the pins on the board tipping off the other side of the 32mb simm.Have people used elastic bands and such to hold in their ram?

prowler · 13 July 2009, 23:15

It's a popular method used to secure RAM when one or more of the retaining lugs have broken, but it's not likely to be as effective when used because the RAM won't fit the socket properly for the reason you describe.

25 May 2009, 15:34	#21
JACK98 Registered User Join Date: Sep 2008 Location: N/A Posts: 420	Anyways,i think its time i will have to tower the A1200.Don't think the card squashed in with heat along with half way hanging out without trap door is good for its health! Last edited by JACK98; 27 June 2014 at 01:18. Reason: correct spelling

26 May 2009, 00:56	#23
JACK98 Registered User Join Date: Sep 2008 Location: N/A Posts: 420	Tower it is so Last edited by JACK98; 27 June 2014 at 01:18.

27 May 2009, 19:06	#24
JACK98 Registered User Join Date: Sep 2008 Location: N/A Posts: 420	This thing is still driving me nuts,the A1200 decides to restart and reset so often.So its either the motherboard or the card thats faulty.I have the enough power goliath,i even ran the comp with the cover on to get more ventulation but the thing still decides to restart .I just seen a smiliar post here,that could be the sheeting or dirty contacts that make it go wonky. http://eab.abime.net/showthread.php?p=520061 Last edited by JACK98; 27 June 2014 at 01:19.

28 May 2009, 03:04	#27
rkauer I hate potatos and shirts Join Date: Oct 2007 Location: Sao Leopoldo / Brazil Age: 58 Posts: 3,482	As you wish. Attached Thumbnails

28 May 2009, 21:29	#28
JACK98 Registered User Join Date: Sep 2008 Location: N/A Posts: 420	Hi thank you for the picture.Friend of mine measured the voltage going through and it came up as 4.84v. So im below the recommended v reading... Last edited by JACK98; 27 June 2014 at 01:19.

26 May 2009, 00:48	#22
NovaCoder Registered User Join Date: Sep 2007 Location: Melbourne/Australia Posts: 4,400	Yep 040's and 1200D's don't go well together, either upgrade it to an 060 or stick it in a tower (or upgrade to an 060 AND stick it in a tower!)

27 May 2009, 20:01	#25
rkauer I hate potatos and shirts Join Date: Oct 2007 Location: Sao Leopoldo / Brazil Age: 58 Posts: 3,482	AGAIN: measure the power rail on the 1240 card before blaming something. You must read more than 4.85V on the two little jumpers visible on the accelerator. Need a picture?

27 May 2009, 21:09	#26
JACK98 Registered User Join Date: Sep 2008 Location: N/A Posts: 420	yes picture please..

28 May 2009, 22:51	#29
rkauer I hate potatos and shirts Join Date: Oct 2007 Location: Sao Leopoldo / Brazil Age: 58 Posts: 3,482	Time to clean the trapdoor socket and accelerator's socket too. Will suffice. If not, you need to route a pair of wires from the power socket on the far left side of Amiga to the floppy connector and feed the floppy with long wires, too. Some will say it causes ground loops, but as far as I tested it don't cause any hassle to A1200.

28 May 2009, 22:58	#30
JACK98 Registered User Join Date: Sep 2008 Location: N/A Posts: 420	Doesn't sound too hard.Any photo or diagram i can copy from lol.Oh an another question,i see it has an 060 jumper.So could i in theory take out the 040 cpu and swap the cpu for 060 and set the jumper to 060? Last edited by JACK98; 27 June 2014 at 01:20.

29 May 2009, 02:59	#31
rkauer I hate potatos and shirts Join Date: Oct 2007 Location: Sao Leopoldo / Brazil Age: 58 Posts: 3,482	Not that easy. You need the power regulator to bring down the 5V to 3.3V (or the 060 will fry) and change the soldered CPU and ROM for new units.

23 June 2009, 22:49	#32
JACK98 Registered User Join Date: Sep 2008 Location: N/A Posts: 420	Think i will have to clean the motherboard/apollo connectors with ethanol.i have the A1200 towered up,the floppy port has its own power supply from the pc psu,but the machine still crashes often with 040.Anyways i swapped the ram for 16mb and it clicked in perfectly no problems now. Last edited by JACK98; 15 November 2013 at 18:53.

13 July 2009, 23:07	#33
JACK98 Registered User Join Date: Sep 2008 Location: N/A Posts: 420	The 32mb simm is double sided so.one side clicks in,other doesn't due to the pins on the board tipping off the other side of the 32mb simm.Have people used elastic bands and such to hold in their ram? Last edited by JACK98; 15 November 2013 at 18:21.

13 July 2009, 23:15	#34
prowler Global Moderator Join Date: Aug 2008 Location: Sidcup, England Posts: 10,300	It's a popular method used to secure RAM when one or more of the retaining lugs have broken, but it's not likely to be as effective when used because the RAM won't fit the socket properly for the reason you describe.

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