Amiga A4000 Woes Continue

[fitzsteve]

It probably just needed a good clean mate, 20 years of dirt and all that.

Fingers crossed it all stays good now

 

[TheCorfiot]

Will it work tomorrow ????

That's par for owning an A4000 unfortunately, try not to disturb anything anymore...including the ROM's

TC

 

[manic23]

LOL understood mate. Don't worry I won't be touching the roms or anything else now, I'll keep you posted on if it works tomorrow

 

[manic23]

Right, it went wrong again this morning, was fine for about 20 minutes then BAM! usual issue, screen corruption, restart then no PIV output and no other Z3 slots operational, but video working OK from RGB SCART via normal mainboard video output.

However...

I did notice that when leaving the computer off for about 10 minutes, it then comes on OK, so I'm wondering if something is overheating? I did replace the fan in the PSU for a quiter one (Coolink SWiF2-800), this one...

http://www.ebuyer.com/621260-coolin...cl-swif2-800?gclid=CLm5majw7cQCFZMZtAodwWMALQ

I do still have the original fan that I removed, do you think it might be a power supply issue? Shall I replace the original fan to see if that is the problem?

 

[roy_bates]

if you think its overheating,try this mate

leave the top off the machine while testing and put a desktop fan blowing air into and over it while its running,if it runs for longer then maybe it is overheating...

you could also try connecting a multimeter to the 5 volt rail on a spare connector during testing to see if it drops or raises in voltage while running.

personally i dont like the fan placement in the power supply on the 4000 at all,but i suppose thats just me.
and the fact it dont really have any active cooling inside the case for expanded machines.

 

[manic23]

Thanks Roy I'll try those suggestions


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[bebek]

When it is working flex mainboard here and there to see if it will stop, that would suggest dry joint somewhere. Also you can rock slightly daughterboard to see if you will loose a connection.

 

[manic23]

OK thanks bebek, I am in the process of doing the open case desktop fan testing as suggested by Roy now. I will report back...

 

[manic23]

I have now had my Amiga A4000 running well for over 3 hours with the case and PSU open and a desktop fan pointing at the innards as Roy suggested with very few issues!

I got quite a few Recoverable Alert (Error: 0100 000C) messages, where I had to restart, this happened about 4 or 5 times I suppose, but I think that is another software related problem and can be left for another day!

I think it's fair to say that the other issues are to do with the power supply. At first I had the fan pointing at the whole board but I thought that I would cover the CPU and Z3 side of the case so that the fan could not reach those parts just to see if the overheating issues were coming from there, but it's been fine, no problems, so I think I need to take out that quite PSU fan I got and either put the original back or get a newer one that has more umph!

Thanks for the suggestion Roy, you are a top top top bloke!

 

[roy_bates]

just get a standard 12 volt fan bud ,but with bearings...

 

[manic23]

OK, I will thanks Roy, if it's OK I will post what I propose to buy here first for your approval!! LOL

- - - Updated - - -

I think I'm going to get this one, seems like it has good airflow and high RPM, also have 3 speed switch. What do you think?

http://www.ebay.co.uk/itm/80mm-Ante...974?pt=LH_DefaultDomain_3&hash=item540ffce5ae

Also, I was wondering, what are you thoughts on me leaving the PSU cover off permanently? Do you think this will help get hot air out the PSU case better? or will it makes things worse by allowing the warm air from the case enter the PSU case?

 

[bebek]

how about buy miniatx psu and replace guts? obviously something is wrong and only cooling is not the answer, should work without, it may pop and take everything on the way

 

[manic23]

how about buy miniatx psu and replace guts?

yes, I must admit that is an option. I think I will try the new fan first as it is only a very low cost item, and if I still have problems then I will look at a miniatx psu.

 

[bebek]

how about buy miniatx psu and replace guts?

yes, I must admit that is an option. I think I will try the new fan first as it is only a very low cost item, and if I still have problems then I will look at a miniatx psu.

obviously something is wrong and only cooling is not the answer, should work without, it may pop and take everything on the way

 

[manic23]

how about buy miniatx psu and replace guts?

yes, I must admit that is an option. I think I will try the new fan first as it is only a very low cost item, and if I still have problems then I will look at a miniatx psu.

obviously something is wrong and only cooling is not the answer, should work without, it may pop and take everything on the way

Yes I agree bebek, but the thing is I replaced the fan in the PSU ages ago when I first got the computer with a quite low speed one and I just don't think it's man enough for the task of keeping the A4000 PSU cool, so I'll try the new more powerful fan first then see how I get on.

 

[bebek]

it is like CSI Miami

 

[manic23]

Amiga A4000 Woes Continue

LOL yes it does feel like that being a A4000 owner I feel like murdering it sometimes

I have to say though bebek I think you did a great job on my motherboard I never rally thanked you properly sorry about that I was too caught up on trying to get the damn thing working!! I might ask you to recap my A1200 soon if that is OK?


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[bebek]

LOL yes it does feel like that being a A4000 owner I feel like murdering it sometimes

I have to say though bebek I think you did a great job on my motherboard I never rally thanked you properly sorry about that I was too caught up on trying to get the damn thing working!! I might ask you to recap my A1200 soon if that is OK?


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Thank you m8.

Send it whenever you want.

 

[manic23]

Newsflash: Early indications seem to point to my Amiga A4000 issues being resolved...

I was introduced to a new and exciting experience this morning. My WarpEngine 4040 turned up yesterday (thanks Rishca) and I fitted it this morning. The new and novel experience was a piece of new hardware for this A4K working the first time after installation!

I am very happy with the WarpEngine 4040, works like a dream, web pages load very quickly and JPG images display almost instantly. It wasn't cheap but I'm glad I have it now.

And the icing on the cake is that the freezing/screen corruption seems to have gone, so I must have had a dodgy A3640 card. I have been running the A4K for about 2 hours this morning with no desktop fan blowing down on the opened case and it is flawless, no issues what so ever. As you can imagine I am VERY happy at the moment.

Later today I'm going to put it all back together with the top case one and see if it is still stable.

Thanks for all your help guys

 

[roy_bates]

thats awesome,i hope it stays that way.