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Author Topic: A question on attaching stuff securely in A1200 tower  (Read 7041 times)

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Offline EcoTopic starter

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A question on attaching stuff securely in A1200 tower
« on: February 11, 2004, 07:48:02 PM »
I have an A1200 in a Micronik steel tower. It is accompanied by a Z4 busboard, BPPC+BVision, internal scandoubler+flickerfixer, lyra keyboard adapter, IDE adapter, and drives. X-surf will be joining the fray when I get a replacement (was broken, aww :-()

Anyway, I have a problem with the physical attachment of the scandoubler+flickerfixer (it's the kind that sits on the two chips).   It does stay in place when the tower is not moving, but it is exceedingly easy to disturb the proper placement of the clip-on-chip thingies. I'm sure there are various ways to attach them so they won't move by accident; what have you used? Tape seems to be the obvious solution?

Also, the BPPC+Bvision combo is not very tightly in place in the A1200 expansion slot (actually the pass-through of the Z4). In fact, is always feels loose. Even though I have not detected any problems in use, I'm thinking of attaching something to it to hold it down more securely. Any ideas?

I'd just like to think about my towered miggy and feel that it's solidly built, not a fragile artifact that should not be disturbed  :-)
Finland.. where polar bears roam the streets
 

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Re: A question on attaching stuff securely in A1200 tower
« Reply #1 on: February 11, 2004, 07:59:51 PM »
Hi Eco,

Quote
Anyway, I have a problem with the physical attachment of the scandoubler+flickerfixer (it's the kind that sits on the two chips).


Do NOT use that kind of scandoubler / flickerfixer.  Instead, use an external one that plugs into the RGB video port.  Most of you guys do NOT know how to properly build an Amiga 1200 tower.  I have seen many pictures of people's Amiga 1200 towers and they look like crap.  Actually, they look like they were built by amateurs that did not know what they were doing.  If any of you guys want to learn how to properly build an Amiga 1200 tower, then email me and I will explain it to you.
 

Offline x56h34

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Re: A question on attaching stuff securely in A1200 tower
« Reply #2 on: February 11, 2004, 08:06:37 PM »
@TheA1200Guy:

Mhmm. And I suppose you have a PHD on assembling A1200 towers, eh?

There is absolutely no great skill required to assemble an A1200 tower. The only part which requires attention is properly dealing with internal cabling in tight spaces, for the sake of better air-flow. The rest is pretty straight forward.
 

Offline Cyberus

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Re: A question on attaching stuff securely in A1200 tower
« Reply #3 on: February 11, 2004, 08:10:22 PM »
You do NOT know what you are talking about!
Don't bother with the A1200, it is a toy computer. You should get an A2000, or the A1500 or A2500. These are the flagship Amiga computers. I personally own 3 of these professional computers:-D
I like Amigas
 

Offline Framiga

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Re: A question on attaching stuff securely in A1200 tower
« Reply #4 on: February 11, 2004, 08:10:31 PM »
@TheA1200Guy

WELLCOME BACK . .  .doommy :roll:

 

Offline EcoTopic starter

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Re: A question on attaching stuff securely in A1200 tower
« Reply #5 on: February 11, 2004, 08:18:02 PM »
A1200 a toy? It's the PPC powered frankenstein of the Amiga world  :-D

Back to the topic at hand: Since I already bought the internal scandoubler, and it works and gives me a great VGA output, I will use it.

I'm actually going to order the VGA switcher thing from www.revanchellc.com and lick the problem with the two video outputs. Should be on sale in a week or two I hear.

So.. any practical ideas on how to bolt the sd/ff down?
Finland.. where polar bears roam the streets
 

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Re: A question on attaching stuff securely in A1200 tower
« Reply #6 on: February 11, 2004, 08:24:59 PM »
Hi x56h34,

Quote
Mhmm. And I suppose you have a PHD on assembling A1200 towers, eh?


No, but I am a Class 4 Electronics Assembler who has been doing electronics assembly for over 20 years.

Quote
There is absolutely no great skill required to assemble an A1200 tower


WRONG !  Actually, a great deal of skill is required to properly assemble an Amiga 1200 Tower of Power.

Quote
The only part which requires attention is properly dealing with internal cabling in tight spaces, for the sake of better air-flow.


WRONG AGAIN !  The first thing you must concider is the case.  You can NOT just use any case for an Amiga 1200 tower.  The PC case that you use must fit the Amiga 1200's motherboard and any expansion hardware that you will be adding.  Also, the back piece, that the PC cards would normally be screwed to, must be removed.  Then a custom made piece of sheet metal is riveted or screwed to the rear opening.  The case that you use MUST have a sub-chassis.  It must be as long and wide as the Amiga 1200's motherboard and any board plugged into it.  Holes are drilled into the sub-chassis and stand-offs are installed.  Then the Amiga 1200 motherboard is firmly screwed onto those stand-offs.  Any addon board that is plugged into the "trapdoor" expansion port must also be mounted on stand-offs.  Also, the ribbon cables MUST be custom made.  When I finish building my own personal Amiga 1200 Tower of Power, I will take pictures of it and post them here on Amiga Org.  These pictures will show you what an Amiga 1200 Tower, that is properly built, looks like.  Trust me, it will NOT look like some kid made it.
 

Offline Framiga

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Re: A question on attaching stuff securely in A1200 tower
« Reply #7 on: February 11, 2004, 08:32:54 PM »
@ TheA1200Guy

Quote
No, but I am a Class 4 Electronics Assembler who has been doing electronics assembly for over 20 years.

pity that the brain, is still at the primary school :roll:

 

Offline x56h34

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Re: A question on attaching stuff securely in A1200 tower
« Reply #8 on: February 11, 2004, 08:33:20 PM »
Wrong! Assembling an A1200 mobo into any kind of a tower is dead easy! What's tricky is knowing how to go about replacing your inferior surface-mounted custom chips with ceramic, military grade ones. :roll:
 

Offline jeffimix

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Re: A question on attaching stuff securely in A1200 tower
« Reply #9 on: February 11, 2004, 08:34:16 PM »
A: this one imagines the Micronik A1200 tower would be built properly for an A1200

B: Itts mostly socketing chips and screwing in cards, simpler on an A2000 my friend, but yet again, shouldn't be too hard on an A1200 customized tower...

C: Whats the Calls 4 stand for? you work on an assembly line or something?
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Offline Argo

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Re: A question on attaching stuff securely in A1200 tower
« Reply #10 on: February 11, 2004, 08:43:44 PM »
How about we keep to the constructive criticism and keep the condecending insults to ourselves? okay.
 

Offline EcoTopic starter

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Re: A question on attaching stuff securely in A1200 tower
« Reply #11 on: February 11, 2004, 08:49:29 PM »
Thank you, Argo.

I'm actually asking a serious questions here. I'm sure some of you have solved these issues for yourself; share the knowledge!

As for using standoffs on the BPPC: I would not know where to put them on the card (quite crowded), and the motherboard tray does not have any metal where the BPPC is.
Finland.. where polar bears roam the streets
 

Offline Karlos

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Re: A question on attaching stuff securely in A1200 tower
« Reply #12 on: February 11, 2004, 08:51:52 PM »
@TheA1200Guy

Question - Can you explain why here you are advising on the construction of a well built tower and yet had this to say in an earlier thread to another A1200T builder -

Quote
Hi Mucker,

It would be better for you to sell your Amiga 1200 Tower and buy yourself an Amiga 4000 or 2500 computer. Do not waste any more money on that A1200 Tower. If you need a really fast and powerful computer then get yourself a Pentium 4 PC. I have all of the Amiga models, including an AmigaOne G4. My Pentium 4 PC, running Windows 98 Second Edition, blows the doors off ALL of my Amiga computers. But, I still love my Amiga computers and actually use them all the time. I like playing the classic video games and watching all the cool demos and animations that were produced for the Amiga. But, if I need speed and power, I do not kid myself, I always use my Pentium 4 PC. It is much faster and out-performs my Amiga 4000 Tower and my AmigaOne G4. Yes, it would be better for you to sell that low-end Amiga model and get yourself one of the high-end Amiga models (like the Amiga 2500, 3000 or 4000). You can buy a really nice Amiga 2500 system on eBay for around $250.00 and an Amiga 4000 system for around $500.00.
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Offline Piru

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Re: A question on attaching stuff securely in A1200 tower
« Reply #13 on: February 11, 2004, 08:57:16 PM »
@DoomMaster (alias TheA1200Guy + several other aliases)

There are several ways to build A1200 tower, and none of them can be considered superior. The hack can be trivial or hard to build, depending on what you need.

What you need to do is to learn respect other's ideas, and stop posting your (sometimes totally false) ideas as facts. Less WRONG, NOT, MUST, and also use somewhat kinder and less provokative language.

You have been proven wrong before, and yet you insisted on spreading false information. You even ended up threatening to DDoS amiga.org.

Grow up (or alternatively, depending on the theory, go take your trolling elsewhere).

Thank you.
 

Offline Daedalus

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Re: A question on attaching stuff securely in A1200 tower
« Reply #14 on: February 11, 2004, 09:02:00 PM »
Quote


Quote
Mhmm. And I suppose you have a PHD on assembling A1200 towers, eh?


No, but I am a Class 4 Electronics Assembler who has been doing electronics assembly for over 20 years.


And of course, during those 20 years of expreience, you learned the one true way to mount an A1200 motherboard in a tower? The A1200 was never designed to go in anything other than a console case. There is no right or wrong way of doing it. There are no books or courses to study. Only testimonies by other users who have taken up the challenge.

Quote

Quote
There is absolutely no great skill required to assemble an A1200 tower


WRONG !  Actually, a great deal of skill is required to properly assemble an Amiga 1200 Tower of Power.

Again, there is no "proper" way of carrying out this work. There are things one can do to make it a more successful project, and things one can do to try not destroying any part of their computer. I have done it myself, and while it does require more skill and dexterity than assembling a standard PC, it doesn't need a great deal of skill at all. A decent hand with a hacksaw, drill and soldering iron coupled with a bit of cop on will get you through it just fine.

Quote

Quote
The only part which requires attention is properly dealing with internal cabling in tight spaces, for the sake of better air-flow.


WRONG AGAIN !  The first thing you must concider is the case.  You can NOT just use any case for an Amiga 1200 tower.  The PC case that you use must fit the Amiga 1200's motherboard and any expansion hardware that you will be adding.  

No disrespect intended, but if you're stupid enough to buy a case that's smaller than the parts you're putting into it, you would be too stupid to even think of attempting something like this. No PC case will actually fit the A1200 motherboard, all you can do is buy one bigger than the board and improvise.

Quote

Also, the back piece, that the PC cards would normally be screwed to, must be removed.

No, it doesn't. And notice I'm not obnoxiously shouting "WRONG AGAIN!!!" If you are a little creative with the positioning of the board, the slots at the back will not get in the way, and will even line up with any PCI or Zorro busboard slots you may wish to use.

Quote

 Then a custom made piece of sheet metal is riveted or screwed to the rear opening.  The case that you use MUST have a sub-chassis.

*Sigh* No it doesn't. It may very well make things easier, but you can quite successfully install an A1200 motherboard in a standard one-piece tower, the only modifications required to the case being the cutting of a slot for the original sockets of the 1200 and the removal ot the motherboard mounting plate.

Quote

It must be as long and wide as the Amiga 1200's motherboard and any board plugged in.  Holes are drilled into the sub-chassis and stand-offs are installed.  Then the Amiga 1200 motherboard is firmly screwed onto those stand-offs.

Again, you deserve to fail by your own devices if you've bought a case too small for the computer you're installing in it. The motherboard can be secured to brackets mounted anywhere they're needed, and doesn't need a mounting plate at all.

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Any addon board that is plugged into the "trapdoor" expansion port must also be mounted on stand-offs.

... Because they'll also be mounted on the stand-offs designed for them inside the original A1200 trapdoor space? Any device designed to be mounted in the trapdoor slot will be happy to sit on top of the trapdoor edge connector in a tower with maybe a cable tie or similar to stop it from moving too much. If possible, maybe a screw through a hole for additional security onto a bracket mounted nearby, but you can get away without it.

Yes, it requires a certain level of skill, but we're not talking about replacing an on-board SMT chip or anything. What's the problem? And what's the problem with using an internal scandoubler? I've used one in mine for years without a single problem.
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