Filthy A2000 mb needs cleaning -- Help!! - Page 2

Zetr0 · 11 January 2008, 07:29

Bigger Pics

Hewitson · 11 January 2008, 07:31

Nice job.. Btw, the Agnus is Chip Ram not Fast Ram

Zetr0 · 11 January 2008, 07:50

in fact its the 2MB Chip Ram upgrade.... indeed rare!!!!

quite expensive too... around $100 on average eBay prices in europe... prolly more stateside!

Hewitson · 11 January 2008, 08:23

Perhaps a 2mb agnus-board could be your next schematic project Zetr0

If some new ones were fabricated, they'd sell like hotcakes.

Zetr0 · 11 January 2008, 08:36

@Braddo

the problem is getting hold of them 390544-03 8375 obese Angus chips is next to impossible.

But i have been giving it some thought if the chip and its timing could be modeled in a spartan with 1.5MB added memory.

it would take some development but i am pretty sure its possible.... then it may well be possible to add AGA to OCS chipsets... after all this is what a MINI MIG is all based around.. the thought of an upgradeable plug-on chipset sounds awesome.... even a simple chunky / planner graphics array could be developed... maybe even add upto 4MB of chip ram.... so you could choose a 1MB OCS / 2MB ECS/AGA or 4MB Chunky in the boot menu... this would have to have rom support though... arguably it might not be nessasary

deffinately food for thought.

Dropcheck · 11 January 2008, 15:30

Quote:

Originally Posted by Braddo

Nice job.. Btw, the Agnus is Chip Ram not Fast Ram

You're right. I meant to say that. I guess I wasn't as sober as I thought.

Dropcheck · 11 January 2008, 15:37

Quote:

Originally Posted by Unknown_K

Did it work when you recieved it? How much was it?

It's still drying. That's the big question. I didn't even turn it on when I got it. Was too afraid too. I got it for a steal, $60 US w/shipping. Time will tell whether it was worth even that. It came with two suspect floppy drives and a scsi drive with 540megs. But at this point nothing is known good.

Sune Salminen · 11 January 2008, 16:04

Could you take a close up photo of the RAM expansion board?

Nice job on the cleaning!

I think it was a wise decision to not plug it in and turn it on immediately..you never know what can happen.

Better to open it up and inspect everything first.

Dropcheck · 11 January 2008, 17:14

Quote:

Originally Posted by Zetr0

Bigger Pics

Just for you!

56kers be ware! These are links to huge pics. If you chose to go to them, go on break, get some coffee, read a paper, watch a movie.... well maybe not that bad, but you get the picture.

Amiga 2000 Front http://www.dropchecks.com/bigfront.html

Dusty Insides http://www.dropchecks.com/biginside.html

Mystery Board http://www.dropchecks.com/bigmysteryboard.html

Before/After PS http://www.dropchecks.com/bigps.html

MB Outside Case http://www.dropchecks.com/bigoutsidecase.html

Cleaning&Drying http://www.dropchecks.com/bigcleananddry.html

Charlie · 11 January 2008, 17:41

Oooo, big, obese 'n dirty!

Thanks for the piccies

@Zetr0:
Always thinking, eh?
I bet there's a sparkley positroninc brain in there...
...is this why you never seem to sleep.

I wonder if this is where Clone-A may be heading. Currently plug-in replacement chips, but no reason why they couldn't be upgrades...
...it would be funny if all those virtually worthless A500's on fleaBay suddenly jump in price because they have socketed chips & the Clone-A team come up with a 8mb 'morbidly-obese Agnes', possibly with a few other tricks.

alexh · 11 January 2008, 17:48

Quote:

Originally Posted by Braddo

If some new ones [2mb agnus-board] were fabricated, they'd sell like hotcakes.

No they wouldn't

What you actually mean is you'd like one

The only people who want them are A2000 and CDTV users. Both of which are the minority of an already very small Amiga hardware market.

If you want 2MByte chip, the cheapest thing it to get a different Amiga.

Dropcheck · 11 January 2008, 17:54

Quote:

Originally Posted by Sune Salminen

Could you take a close up photo of the RAM expansion board?

Nice job on the cleaning!

I think it was a wise decision to not plug it in and turn it on immediately..you never know what can happen.

Better to open it up and inspect everything first.

You twisted my arm.

Again be warned this is a link to a big pic

Mystery Board (2 meg Agnus Chip Board?) http://www.dropchecks.com/bigmysteryboard2.html

Zetr0 · 11 January 2008, 22:00

Quote:

Originally Posted by Dropcheck

Just for you!

56kers be ware! These are links to huge pics. If you chose to go to them, go on break, get some coffee, read a paper, watch a movie.... well maybe not that bad, but you get the picture.

Amiga 2000 Front http://www.dropchecks.com/bigfront.html

Dusty Insides http://www.dropchecks.com/biginside.html

Mystery Board http://www.dropchecks.com/bigmysteryboard.html

Before/After PS http://www.dropchecks.com/bigps.html

MB Outside Case http://www.dropchecks.com/bigoutsidecase.html

Cleaning&Drying http://www.dropchecks.com/bigcleananddry.html

Mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm

thank you.

cv643d · 11 January 2008, 22:56

Nice.. I may try that bathing procedure with my CyberStormPPC. Should I remove the memory sticks and 060 before?

Zetr0 · 11 January 2008, 23:42

@cv643d

personally i would, for that total fresh cleaning

Dropcheck · 12 January 2008, 00:09

Now I am ready to move on to replacement of the battery since the original went to that great battery pasture in the sky.

I wanted to move the battery off the motherboard, yet keep the charging circuit as original as possible.

This site gave me an idea. http://99.253.2.30/amiga/battery

I know the original battery is 3.6V 70mAh NiCad, but does it matter what the mAh rating is? I mean as low as possible, but would a 3.6V 400mAh NiCad cordless phone battery work? I expect it would take forever to charge, but otherwise would it work?

Hewitson · 12 January 2008, 01:14

Quote:

Originally Posted by alexh

No they wouldn't

What you actually mean is you'd like one

The only people who want them are A2000 and CDTV users. Both of which are the minority of an already very small Amiga hardware market.

If you want 2MByte chip, the cheapest thing it to get a different Amiga.

I may be wrong but I'm sure theres quite a few people who would like one. Apart from A2000 and CDTV users a lot of people have A500, why wouldn't they want a nice cheap ram-upgrade?

alexh · 12 January 2008, 01:17

Quote:

Originally Posted by Braddo

I may be wrong but I'm sure theres quite a few people who would like one.

Name 20

Even then you'd only have 1/10th the number of people required to make it profitable to remanufacture them and sell them at an acceptable price.

Quote:

Originally Posted by Braddo

a lot of people have A500, why wouldn't they want a nice cheap ram-upgrade?

Who said anything about cheap? They would'nt want them because they'd be able to buy a second hand A500+ or A600 off ebay for less.

Unfortunately a re-run of MegaChips (even without an Agnus) doesn't make economic sense. The developer would never make their money back.

There are a handful of hardware designs which may still be profitable, this isnt one of them.

Zetr0 · 12 January 2008, 05:20

Quote:

Originally Posted by Charlie

Oooo, big, obese 'n dirty!

Thanks for the piccies

Is there any other kind?!

Quote:

Originally Posted by Charlie

@Zetr0:
Always thinking, eh?
I bet there's a sparkley positroninc brain in there...
...is this why you never seem to sleep.

This would explain an awful lot wouldn't it..... Ooooo shiney

Quote:

Originally Posted by Charlie

I wonder if this is where Clone-A may be heading. Currently plug-in replacement chips, but no reason why they couldn't be upgrades...
...it would be funny if all those virtually worthless A500's on fleaBay suddenly jump in price because they have socketed chips & the Clone-A team come up with a 8mb 'morbidly-obese Agnes', possibly with a few other tricks.

That indeed would be to damn cool!

Jope · 12 January 2008, 10:24

Quote:

Originally Posted by Dropcheck

I know the original battery is 3.6V 70mAh NiCad, but does it matter what the mAh rating is? I mean as low as possible, but would a 3.6V 400mAh NiCad cordless phone battery work? I expect it would take forever to charge, but otherwise would it work?

A cordless phone battery works fine. Use NiMH.

12 January 2008, 00:09	#36
Dropcheck Registered User Join Date: Aug 2007 Location: Oklahoma City Ok USA Posts: 66	Now I am ready to move on to replacement of the battery since the original went to that great battery pasture in the sky. I wanted to move the battery off the motherboard, yet keep the charging circuit as original as possible. This site gave me an idea. http://99.253.2.30/amiga/battery I know the original battery is 3.6V 70mAh NiCad, but does it matter what the mAh rating is? I mean as low as possible, but would a 3.6V 400mAh NiCad cordless phone battery work? I expect it would take forever to charge, but otherwise would it work? Last edited by Dropcheck; 12 January 2008 at 00:10. Reason: spelling

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Spring cleaning	4pLaY	MarketPlace	0	28 March 2013 17:45
Cleaning up an A1200HD	HT!	support.Other	5	06 June 2011 20:15
cleaning plastic	orange	support.Hardware	2	28 September 2010 15:45
Cleaning Keyboards	pcut	support.Hardware	11	20 September 2010 21:17

11 January 2008, 07:29	#21
Zetr0 Ya' like it Retr0? Join Date: Jul 2005 Location: United Kingdom Age: 49 Posts: 9,768	Bigger Pics

11 January 2008, 07:31	#22
Hewitson Registered User Join Date: Feb 2007 Location: Melbourne, Australia Age: 41 Posts: 3,773	Nice job.. Btw, the Agnus is Chip Ram not Fast Ram

11 January 2008, 07:50	#23
Zetr0 Ya' like it Retr0? Join Date: Jul 2005 Location: United Kingdom Age: 49 Posts: 9,768	in fact its the 2MB Chip Ram upgrade.... indeed rare!!!! quite expensive too... around $100 on average eBay prices in europe... prolly more stateside!

11 January 2008, 08:23	#24
Hewitson Registered User Join Date: Feb 2007 Location: Melbourne, Australia Age: 41 Posts: 3,773	Perhaps a 2mb agnus-board could be your next schematic project Zetr0 If some new ones were fabricated, they'd sell like hotcakes.

11 January 2008, 08:36	#25
Zetr0 Ya' like it Retr0? Join Date: Jul 2005 Location: United Kingdom Age: 49 Posts: 9,768	@Braddo the problem is getting hold of them 390544-03 8375 obese Angus chips is next to impossible. But i have been giving it some thought if the chip and its timing could be modeled in a spartan with 1.5MB added memory. it would take some development but i am pretty sure its possible.... then it may well be possible to add AGA to OCS chipsets... after all this is what a MINI MIG is all based around.. the thought of an upgradeable plug-on chipset sounds awesome.... even a simple chunky / planner graphics array could be developed... maybe even add upto 4MB of chip ram.... so you could choose a 1MB OCS / 2MB ECS/AGA or 4MB Chunky in the boot menu... this would have to have rom support though... arguably it might not be nessasary deffinately food for thought.

11 January 2008, 16:04	#28
Sune Salminen Dinamáquina Join Date: May 2002 Location: BH/Brasil Age: 49 Posts: 370	Could you take a close up photo of the RAM expansion board? Nice job on the cleaning! I think it was a wise decision to not plug it in and turn it on immediately..you never know what can happen. Better to open it up and inspect everything first.

11 January 2008, 17:41	#30
Charlie . . Mouse . . Join Date: Jun 2005 Location: Nowhere Age: 55 Posts: 1,792	Oooo, big, obese 'n dirty! Thanks for the piccies @Zetr0: Always thinking, eh? I bet there's a sparkley positroninc brain in there... ...is this why you never seem to sleep. I wonder if this is where Clone-A may be heading. Currently plug-in replacement chips, but no reason why they couldn't be upgrades... ...it would be funny if all those virtually worthless A500's on fleaBay suddenly jump in price because they have socketed chips & the Clone-A team come up with a 8mb 'morbidly-obese Agnes', possibly with a few other tricks.

11 January 2008, 22:56	#34
cv643d Registered User Join Date: Jul 2002 Location: Sweden Posts: 762	Nice.. I may try that bathing procedure with my CyberStormPPC. Should I remove the memory sticks and 060 before?

11 January 2008, 23:42	#35
Zetr0 Ya' like it Retr0? Join Date: Jul 2005 Location: United Kingdom Age: 49 Posts: 9,768	@cv643d personally i would, for that total fresh cleaning

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)