Apollo 1240 fan inoperative

Magno Boots · 16 September 2007, 23:04

Attachment 14765

Chaps,
Possible problem, but not sure yet..

Slotted in my new/secondhand Apollo 1240/33 card this evening and expected the onboard fan to start whirring away immediately.

This didn't happen, and still hasn't after an hour of running despite it getting very hot to the touch. I initially thought that some kind of thermostat may be installed, but now think not.

Got the multimeter out (on DCV>20v), but the readings from the board connections show -0.18v?. I expected to see 5v or something along those lines.

So.. are there any further simple tests to conduct? eg. fan, connections etc.

I understand that I could run a fan from the floppy current, but what voltage would this be? 5v?. I've got a little 12v fan, but not sure if that would work.

Many thanks
Magno

Zetr0 · 17 September 2007, 00:10

Hello there Magno, thats an interesting problem,

As far as i know, the accelerator card only allows for 5v fans, for 12v fans you would require power from a 12v source :/

I would suggest that you either cut or de-solder the fan and connect it to the 12volt rail.

Smiley · 17 September 2007, 00:47

This used to happen to me iirc. Re-seating the card solved the problem. However it proved so troubling that I just removed the fan and soldered on a new one.

musashi5150 · 17 September 2007, 09:30

Yeah, better fix this Magno. 040s run pretty hot and you're likely to BBQ it if the fan doesn't work

DrF · 17 September 2007, 10:43

If you don't mind me asking how much did you pay for it?
It's just I am trying to buy one and get a rough idea of what I should pay.

http://eab.abime.net/showthread.php?t=32139

amigakit.com · 17 September 2007, 10:46

We have some low cost 40mm fans here that may be OK for your Apollo heatsink:

http://amigakit.leamancomputing.com/...roducts_id=666

Magno Boots · 18 September 2007, 00:52

Thanks for the info fellas.

I put the card into another machine and the fan fired up immediately, but the FDD popped and burnt at exactly the same time (just like a french banger). I hope it's a coincidence!

So it went back into my 'best' machine, but no amount of wiggling would get it to run. Possibly worn connections on the MB?

Anyways, it works but I don't trust it. Will get a new fan as Smiley said and hardwire it.

Thanks again
Magno

Zetr0 · 18 September 2007, 01:18

@Magno

good luck my friend, if you need any help, just gimmie a PM

16 September 2007, 23:04	#1
Magno Boots Zone Friend Join Date: Feb 2006 Location: Hertfordshire Posts: 688	Apollo 1240 fan inoperative Attachment 14765 Chaps, Possible problem, but not sure yet.. Slotted in my new/secondhand Apollo 1240/33 card this evening and expected the onboard fan to start whirring away immediately. This didn't happen, and still hasn't after an hour of running despite it getting very hot to the touch. I initially thought that some kind of thermostat may be installed, but now think not. Got the multimeter out (on DCV>20v), but the readings from the board connections show -0.18v?. I expected to see 5v or something along those lines. So.. are there any further simple tests to conduct? eg. fan, connections etc. I understand that I could run a fan from the floppy current, but what voltage would this be? 5v?. I've got a little 12v fan, but not sure if that would work. Many thanks Magno Last edited by Magno Boots; 29 February 2008 at 23:25.

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17 September 2007, 00:10	#2
Zetr0 Ya' like it Retr0? Join Date: Jul 2005 Location: United Kingdom Age: 49 Posts: 9,768	Hello there Magno, thats an interesting problem, As far as i know, the accelerator card only allows for 5v fans, for 12v fans you would require power from a 12v source :/ I would suggest that you either cut or de-solder the fan and connect it to the 12volt rail.

17 September 2007, 00:47	#3
Smiley Amiga-less! Join Date: Feb 2005 Location: UK Posts: 1,350	This used to happen to me iirc. Re-seating the card solved the problem. However it proved so troubling that I just removed the fan and soldered on a new one.

17 September 2007, 09:30	#4
musashi5150 move.w #$4489,$dff07e Join Date: Sep 2005 Location: Norfolk, UK Age: 43 Posts: 2,351	Yeah, better fix this Magno. 040s run pretty hot and you're likely to BBQ it if the fan doesn't work

17 September 2007, 10:43	#5
DrF Blessed A1200 Of TeH Rat Join Date: Aug 2007 Location: Bham, UK Age: 42 Posts: 496	If you don't mind me asking how much did you pay for it? It's just I am trying to buy one and get a rough idea of what I should pay. http://eab.abime.net/showthread.php?t=32139

17 September 2007, 10:46	#6
amigakit.com Registered User Join Date: Aug 2004 Location: www.amigakit.com Posts: 2,051	We have some low cost 40mm fans here that may be OK for your Apollo heatsink: http://amigakit.leamancomputing.com/...roducts_id=666

18 September 2007, 00:52	#7
Magno Boots Zone Friend Join Date: Feb 2006 Location: Hertfordshire Posts: 688	Thanks for the info fellas. I put the card into another machine and the fan fired up immediately, but the FDD popped and burnt at exactly the same time (just like a french banger). I hope it's a coincidence! So it went back into my 'best' machine, but no amount of wiggling would get it to run. Possibly worn connections on the MB? Anyways, it works but I don't trust it. Will get a new fan as Smiley said and hardwire it. Thanks again Magno

18 September 2007, 01:18	#8
Zetr0 Ya' like it Retr0? Join Date: Jul 2005 Location: United Kingdom Age: 49 Posts: 9,768	@Magno good luck my friend, if you need any help, just gimmie a PM

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