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Search took 0.01 seconds. Search: Posts Made By: rvctech
Forum: Hardware mods 05 October 2020, 04:45
Replies: 466
Views: 63,130
Posted By rvctech
The BPF and DL do not degrade or leak on their...

The BPF and DL do not degrade or leak on their own, they're a passive filter comprised of inductors and capacitors. They're easily damaged by leaking capacitors though, and it's difficult to source...
Forum: Hardware mods 03 October 2020, 02:57
Replies: 466
Views: 63,130
Posted By rvctech
Do you have a link to an announcement (or...

Do you have a link to an announcement (or similar) from him? Would be nice to have as a reference.
Forum: Hardware mods 24 September 2020, 03:36
Replies: 466
Views: 63,130
Posted By rvctech
PCBs are traditionally designed using imperial...

PCBs are traditionally designed using imperial units, not metric. Especially for anything that comes out of the US. All track widths, spacings etc on US designed Amiga motherboards are a proportion...
Forum: Hardware mods 14 September 2020, 06:10
Replies: 466
Views: 63,130
Posted By rvctech
:laughing Jokes aside, the A600 revision 2A...

:laughing

Jokes aside, the A600 revision 2A PCB is a preliminary Commodore design that was never released and has a number of issues. It should not be used as-is, it's not very likely to work!
Forum: Hardware mods 16 August 2020, 06:04
Replies: 27
Views: 5,232
Posted By rvctech
If you're desperate for a 2MB Megachip, I'm...

If you're desperate for a 2MB Megachip, I'm fairly certain that there has already been at least one open source 2MB Megachip design released in the past.
Forum: Hardware mods 16 August 2020, 05:55
Replies: 16
Views: 2,194
Posted By rvctech
Hi CD32Freak, For what it's worth a fair few...

Hi CD32Freak,

For what it's worth a fair few people (including myself) tried to explain this very thing! But some people just don't want to hear this. In my opinion you did nothing really wrong....
Forum: Hardware mods 08 August 2020, 03:16
Replies: 36
Views: 3,511
Posted By rvctech
Classic computers are a bit like classic cars,...

Classic computers are a bit like classic cars, some people like to repair and restore them when possible.

I don't have anything against clone boards, I'm just making a point that the custom chips...
Forum: Hardware mods 07 August 2020, 02:08
Replies: 36
Views: 3,511
Posted By rvctech
Unfortunately it still relies on ancient and...

Unfortunately it still relies on ancient and unavailable custom chips. Some new ideas, but the same old result as all the rest of the clone boards..
Forum: Hardware mods 06 August 2020, 03:19
Replies: 36
Views: 3,511
Posted By rvctech
I feel bad to waste a Classic Amiga board when it...

I feel bad to waste a Classic Amiga board when it can be repaired, even if it is a lot of work. Hand building a new board might take as much time as repairing one in some cases..
Forum: Hardware mods 05 August 2020, 11:51
Replies: 36
Views: 3,511
Posted By rvctech
Ok that's impressively bad! :-0

Ok that's impressively bad! :-0
Forum: Hardware mods 05 August 2020, 11:47
Replies: 36
Views: 3,511
Posted By rvctech
Yeah, but on the A3000 the battery is in the top...

Yeah, but on the A3000 the battery is in the top left area. It normally kills the flicker fixer and the surrounding area gets messed up. I would be impressed if the battery leakage would travel all...
Forum: Hardware mods 05 August 2020, 11:19
Replies: 36
Views: 3,511
Posted By rvctech
True, corrosion can be a real killer. Luckily...

True, corrosion can be a real killer. Luckily most Amiga motherboards don't have signals on inner layers..
Forum: Hardware mods 05 August 2020, 09:35
Replies: 36
Views: 3,511
Posted By rvctech
I'm glad you were entertained. Yeah it's just a...

I'm glad you were entertained. Yeah it's just a bunch of "industry best practices", and mostly common sense anyway. Looks better than using bodge wires for torn-off pads though.
Forum: Hardware mods 05 August 2020, 04:32
Replies: 36
Views: 3,511
Posted By rvctech
If a board is re-capped and/or repaired by a...

If a board is re-capped and/or repaired by a professional, then this wouldn't happen in the first place. I agree that there's a need for replacement boards for some people that have badly damaged...
Forum: Hardware mods 05 August 2020, 04:27
Replies: 36
Views: 3,511
Posted By rvctech
No, that was an experimental A600 board that was...

No, that was an experimental A600 board that was designed by Mick prior to the release of these Gerbers. It wasn't bad data, it was an experimental design. You killed a working machine and those...
Forum: Hardware mods 05 August 2020, 04:16
Replies: 27
Views: 5,232
Posted By rvctech
@PearJuice Yes there are people who believe...

@PearJuice

Yes there are people who believe they can build new Amigas using these boards! I spoke to quite a few, and those are the people that are local to me. Nearly all of them never owned an...
Forum: Hardware mods 05 August 2020, 01:35
Replies: 16
Views: 2,194
Posted By rvctech
If all one wants to do is re-make the old boards,...

If all one wants to do is re-make the old boards, then we're nearly there. But if something doesn't work, we're flying blind. The schematics are just a "nice to have" :)

Both my A2386SX...
Forum: Hardware mods 04 August 2020, 10:43
Replies: 16
Views: 2,194
Posted By rvctech
Well I've made a right fool of myself :D. I just...

Well I've made a right fool of myself :D. I just checked and my boards are 1.0 after all, for some reason I remembered them as being 1.x. Maybe I can finally repair them now!

Although it's...
Forum: Hardware mods 04 August 2020, 10:24
Replies: 27
Views: 5,232
Posted By rvctech
@PearJuice Please don't take these comments...

@PearJuice

Please don't take these comments personally :). The work you did is very skillful and it's nice of you to make it open source.

We're just discussing the greater issue - if somebody...
Forum: Hardware mods 04 August 2020, 09:39
Replies: 27
Views: 5,232
Posted By rvctech
Ah yes I had forgotten about the 060...

Ah yes I had forgotten about the 060 accelerators! Fortunately the counterfeiters in China and South East Asia have already started to work on this pressing issue, and it is now possible for everyone...
Forum: Hardware mods 04 August 2020, 02:13
Replies: 27
Views: 5,232
Posted By rvctech
I'm sure people will be happy to sell you a...

I'm sure people will be happy to sell you a hundred blank PCBs out of China, but where exactly do you expect these custom chips to come from?

When will people realise that the Amiga custom chips...
Forum: Hardware mods 03 August 2020, 05:48
Replies: 16
Views: 2,194
Posted By rvctech
Hah, I never saw a rev 1.0 in the wild before, I...

Hah, I never saw a rev 1.0 in the wild before, I stand corrected! The ones I've seen and own (broken unfortuantely) are newer revisions than that.

It matters a lot to not have schematics :), the...
Forum: Hardware mods 03 August 2020, 04:31
Replies: 16
Views: 2,194
Posted By rvctech
This is the old 1.0 version of the board and is...

This is the old 1.0 version of the board and is nothing more than a historical curiousity. The board design probably has errors in it and the schematics were never released by Commodore. It would not...
Forum: Hardware mods 03 August 2020, 04:23
Replies: 36
Views: 3,511
Posted By rvctech
Caveat Emptor! How about people stop wasting rare...

Caveat Emptor! How about people stop wasting rare custom chips for their "latest build"?
Forum: Hardware mods 03 August 2020, 03:27
Replies: 38
Views: 5,505
Posted By rvctech
CD32Freak, You can't load SVG directly into...

CD32Freak,

You can't load SVG directly into Altium (I did not say that you could). But you can convert the SVG data to an intermediary format and then load it into Altium. It still requires manual...
Forum: Hardware mods 02 August 2020, 12:43
Replies: 38
Views: 5,505
Posted By rvctech
As far as I know, all that happened was that the...

As far as I know, all that happened was that the plot data was extracted and converted to Gerber. There was no ripping of netlists from AmigaPCB.org. The unique ability to check nets on AmigaPCB.org...
Forum: Hardware mods 02 August 2020, 12:11
Replies: 38
Views: 5,505
Posted By rvctech
Hi Chucky, I don't use Facebook :), thanks...

Hi Chucky,

I don't use Facebook :), thanks for posting it here and providing some context.

This is a big change in his position, if one goes to page 1 of this same thread, he wrote "No worries....
Forum: Hardware mods 02 August 2020, 03:26
Replies: 38
Views: 5,505
Posted By rvctech
To all the people that posted in the last recent...

To all the people that posted in the last recent days, do you realise that you are responding to something from 3 months ago that is no longer relevant?

While I personally disagree with the...
Forum: Hardware mods 17 July 2020, 10:10
Replies: 115
Views: 19,268
Posted By rvctech
Hi Rodeo, The leaks don't usually make the...

Hi Rodeo,

The leaks don't usually make the pads weak although I have seen this after a very long period of exposure. When working on a PCB, pads will normally de-laminate from the application of...
Forum: Hardware mods 17 July 2020, 09:58
Replies: 115
Views: 19,268
Posted By rvctech
Did Ian Stedman have any luck with the board he...

Did Ian Stedman have any luck with the board he was working on?
Forum: Hardware mods 08 July 2020, 02:02
Replies: 115
Views: 19,268
Posted By rvctech
In my experience it's not that common for Amiga...

In my experience it's not that common for Amiga 600 motherboards to be killed due to cap leaks - it definitely makes a big mess, but it takes a very long time for capacitors to cause real damage. I...
Forum: Hardware mods 07 July 2020, 04:52
Replies: 115
Views: 19,268
Posted By rvctech
You use those Gerbers at your own risk, they are...

You use those Gerbers at your own risk, they are not guaranteed to be correct.

Will you be providing a solution to the fact that there are nearly no more Amiga custom chips left in the world?
Forum: Hardware mods 04 June 2020, 05:39
Replies: 466
Views: 63,130
Posted By rvctech
Unfortunately not. Also the person who designed...

Unfortunately not. Also the person who designed it does not have the chip schematics anymore (someone asked her), so we can't use that avenue either, although she can probably answer questions and...
Forum: Hardware mods 28 May 2020, 02:40
Replies: 115
Views: 19,268
Posted By rvctech
To repair that cable, I'd try to use a conductive...

To repair that cable, I'd try to use a conductive paint. It's not really something that can be soldered. But probably not worth the trouble if you can get a replacement.

The A600 came with...
Forum: Hardware mods 28 May 2020, 02:08
Replies: 115
Views: 19,268
Posted By rvctech
Hi Ceason, I think there would be variation...

Hi Ceason,
I think there would be variation between heads from different drives depending on the manufacturer, so probably not possible to do.

It might be possible though if you found a PC drive...
Forum: Hardware mods 27 May 2020, 15:06
Replies: 115
Views: 19,268
Posted By rvctech
Yes worth trying with not much else to lose. I...

Yes worth trying with not much else to lose. I would suggest to also check that the motor rotates smoothly and freely when you spin it with your hand (and no disk is inserted). The drive will...
Forum: Hardware mods 27 May 2020, 01:34
Replies: 115
Views: 19,268
Posted By rvctech
It's rare for the heads to die unless you see...

It's rare for the heads to die unless you see signs of physical damage. What happens if you try to format a disk and read it back in the same drive? Does the drive shaft motor spin smoothly and...
Forum: Hardware mods 26 May 2020, 01:32
Replies: 115
Views: 19,268
Posted By rvctech
Electrically you can use almost any Amiga drive...

Electrically you can use almost any Amiga drive with it (except for the ones used in the ESCOM Amigas which are modified PC drives) but mechanically it's a bad fit because the A600 has it's own...
Forum: Hardware mods 21 May 2020, 05:22
Replies: 115
Views: 19,268
Posted By rvctech
Hi Ceason, There are a few subtle...

Hi Ceason,

There are a few subtle differences between revision 1.5 and 2A/B. In particular the Rev 2 doesn't support the old Rev 1 Gayle (it has no place for the work-around PAL/GAL).

This is...
Forum: Hardware mods 12 May 2020, 05:30
Replies: 115
Views: 19,268
Posted By rvctech
:shocked.. OK that definitely sounds like it is...

:shocked.. OK that definitely sounds like it is damaged beyond repair!

I strongly recommend that you install PLCC sockets on your replacement board for all PLCC ICs. These parts need to be spared...
Showing results 1 to 40 of 91
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