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Search: Posts Made By: ajk
Forum: support.Hardware Today, 10:02
Replies: 3
Views: 136
Posted By ajk
I would suspect that there is a hairline crack in...

I would suspect that there is a hairline crack in a solder joint or trace somewhere on the board. Probably once the board has been running for a little while, thermal expansion causes something to...
Forum: New to Emulation or Amiga scene Yesterday, 23:27
Replies: 3
Views: 88
Posted By ajk
The .adf files are akin to .iso files on the PC,...

The .adf files are akin to .iso files on the PC, so you don't just run them. You can mount them virtually on the Amiga using http://aminet.net/package/disk/misc/ImageMount or something similar....
Forum: Nostalgia & memories 12 December 2018, 19:54
Replies: 2,014
Views: 288,689
Posted By ajk
Thin double sided tape.

Thin double sided tape.
Forum: Member Introductions 01 December 2018, 14:13
Replies: 3
Views: 204
Posted By ajk
There is no difference between a VGA and a SCART...

There is no difference between a VGA and a SCART cable as far as the Amiga is concerned. In both cases they carry the RGB signals from the video port.

Whether the inputs on the OSSC are different...
Forum: Hardware mods 26 November 2018, 11:16
Replies: 4
Views: 330
Posted By ajk
Output voltage channel 3 is -12V, it's mentioned...

Output voltage channel 3 is -12V, it's mentioned a bit further down the spec listing.
Forum: support.Hardware 23 November 2018, 16:12
Replies: 148
Views: 41,437
Posted By ajk
It is just about doable without removing...

It is just about doable without removing anything, but it is indeed crowded in there. I use aluminium foil folded in two as a heat barrier, it will stop quick slips of the iron from doing harm. Also...
Forum: support.Hardware 19 November 2018, 17:52
Replies: 5
Views: 159
Posted By ajk
Yeah, that's perfectly normal. You can wipe the...

Yeah, that's perfectly normal. You can wipe the rosin away with alcohol if you wish but it's harmless.
Forum: support.Hardware 19 November 2018, 16:51
Replies: 5
Views: 159
Posted By ajk
Crystal seems to be leaking? That should not...

Crystal seems to be leaking? That should not happen, there's quite literally a piece of crystal and maybe a divider IC inside the metal can. Are you sure it's not something else that has leaked on...
Forum: support.Hardware 15 November 2018, 13:06
Replies: 7
Views: 307
Posted By ajk
I have done some testing for work purposes and...

I have done some testing for work purposes and the difference between good tape (super thin stuff) and actual heatsink compound was about 1-2 degrees C. Of course this will likely depend somewhat on...
Forum: support.Hardware 10 November 2018, 11:07
Replies: 12
Views: 548
Posted By ajk
I don't think that resistor (or diode) is burned,...

I don't think that resistor (or diode) is burned, it's probably just hand soldered in as a factory mod and that brown stuff is rosin flux.

But yes, definitely battery leakage all over. The board...
Forum: support.Hardware 07 November 2018, 07:38
Replies: 34
Views: 1,382
Posted By ajk
@desiv Parts with significant difference in...

@desiv

Parts with significant difference in heat dissipation capacity can indeed be tricky; I suggest you keep the iron on the through-hole for as long as it takes for solder to flow onto it, and...
Forum: support.Hardware 06 November 2018, 19:04
Replies: 34
Views: 1,382
Posted By ajk
@plasmab Absolutely, once you are...

@plasmab

Absolutely, once you are comfortable with the process, there are many ways to skin a cat. But what desiv described is a common issue or misconception beginners face; you in fact can't...
Forum: support.Hardware 06 November 2018, 14:26
Replies: 34
Views: 1,382
Posted By ajk
Solder will not stick to cold parts; you need to...

Solder will not stick to cold parts; you need to get both the board and the jack hot enough so that solder will melt on contact with them. Generally speaking you never apply solder wire directly to...
Forum: New to Emulation or Amiga scene 24 October 2018, 11:29
Replies: 10
Views: 586
Posted By ajk
If you get a hard drive replacement of some...

If you get a hard drive replacement of some description (like the CF card you have been looking at) and some extra RAM, you'll be good to go for the majority of games. The stock 2MB of RAM will allow...
Forum: Amiga scene 23 October 2018, 15:42
Replies: 17
Views: 1,127
Posted By ajk
There are polymer caps which should essentially...

There are polymer caps which should essentially last forever without leaking, but of course even they may eventually fail otherwise.

In any case it may be difficult to tell for sure whether the...
Forum: support.Hardware 22 October 2018, 11:45
Replies: 5
Views: 445
Posted By ajk
There just happens to be a diagram for the 8A...

There just happens to be a diagram for the 8A here: http://www.amigapcb.org/

That should make it easy to follow the trace around for possible sources for a shortcut. Something must have caused an...
Forum: Retrogaming General Discussion 19 October 2018, 09:56
Replies: 8
Views: 319
Posted By ajk
If you load games from a floppy (real or...

If you load games from a floppy (real or emulated), there is no memory overhead since WHDLoad is not involved.
Forum: Nostalgia & memories 12 October 2018, 06:47
Replies: 2,014
Views: 288,689
Posted By ajk
It can switch to a mode where the button states...

It can switch to a mode where the button states are transmitted in a serial fashion rather than as individual i/o lines.
Forum: New to Emulation or Amiga scene 10 October 2018, 15:46
Replies: 4
Views: 569
Posted By ajk
Welcome to the forum. Basically, even if the CPU...

Welcome to the forum. Basically, even if the CPU itself does work, there won't be proper driver support in OS4 for the board. MorphOS (an alternative next-gen AmigaOS derivative) does support some...
Forum: support.Hardware 09 October 2018, 19:48
Replies: 15
Views: 390
Posted By ajk
I have seen stainless steel rust too, but it's...

I have seen stainless steel rust too, but it's not quite the same thing. Stainless steel is still mostly iron, it's just alloyed with chromium which is supposed to protect it. But aluminium is an...
Forum: support.Hardware 09 October 2018, 14:33
Replies: 15
Views: 390
Posted By ajk
I don't think the shield is aluminium, it...

I don't think the shield is aluminium, it wouldn't have rusted if it was. I think it's just thin, possibly tin-plated steel.
Forum: support.Hardware 04 October 2018, 13:51
Replies: 4
Views: 196
Posted By ajk
This one? ...

This one?

http://amiga.resource.cx/exp/vector2030
Forum: News 30 September 2018, 21:42
Replies: 341
Views: 53,695
Posted By ajk
Well the links say "electronic delivery" so I'd...

Well the links say "electronic delivery" so I'd assume it's files.
Forum: support.Hardware 27 September 2018, 09:17
Replies: 16
Views: 523
Posted By ajk
@nobody How have you come to that conclusion...

@nobody

How have you come to that conclusion if he has already swapped the membrane once, and even with the original one the keys worked if you pressed them for long enough?
Forum: support.Hardware 27 September 2018, 07:38
Replies: 16
Views: 523
Posted By ajk
This is what got me stumped. Obviously the key...

This is what got me stumped. Obviously the key press is being detected so there was probably nothing wrong with the membrane in the first place. As far as I am aware the key repetition is purely a...
Forum: support.Hardware 24 September 2018, 19:03
Replies: 10
Views: 459
Posted By ajk
Somehow the synchronization seems to be way...

Somehow the synchronization seems to be way off... video DAC failure perhaps?

By the way, you've got some suspicious links underneath the photos. Is your image hosting service forcing spam in here?
Forum: support.Hardware 24 September 2018, 07:32
Replies: 10
Views: 459
Posted By ajk
There are no metal cans on the underside of the...

There are no metal cans on the underside of the board though, only ceramics.
Forum: Retrogaming General Discussion 23 September 2018, 10:39
Replies: 22
Views: 1,270
Posted By ajk
They are very similar in capability apart from...

They are very similar in capability apart from AGA. And of course the A4000 desktop model has a 5.25" bay if you want to have a CD/DVD drive, something the A3000 desktop can only have externally...
Forum: support.Hardware 22 September 2018, 09:39
Replies: 2
Views: 246
Posted By ajk
Which style are the jacks? Colored plastic frame...

Which style are the jacks? Colored plastic frame or "skeleton" design with just the metal parts?

Search Mouser for Kobiconn brand RCA jacks...
Forum: support.Hardware 20 September 2018, 08:41
Replies: 16
Views: 502
Posted By ajk
The keyboard signals (clock and data) connect to...

The keyboard signals (clock and data) connect to the CIA at U7, there isn't really much else directly involved. Also I don't think there is a way for the motherboard to purposely reset the keyboard,...
Forum: Nostalgia & memories 19 September 2018, 11:27
Replies: 2,014
Views: 288,689
Posted By ajk
Also quite a lot of the larger, multi-disk (let's...

Also quite a lot of the larger, multi-disk (let's say 4 disks or more) games actually do have their own hard drive installers and use a code wheel or other protection system instead. This includes...
Forum: Nostalgia & memories 19 September 2018, 10:24
Replies: 2,014
Views: 288,689
Posted By ajk
It is possible, if there is no copy protection to...

It is possible, if there is no copy protection to prevent it and the floppy disk uses a normal file system.

Some games have their own hard drive installers, but many games were designed on purpose...
Forum: support.Hardware 06 September 2018, 07:25
Replies: 4
Views: 242
Posted By ajk
The badge is held on by double sided tape,...

The badge is held on by double sided tape, essentially; gentle heat from a hair dryer or such will help dislodge it. Use a plastic implement to gently pry one side up without bending the badge.

If...
Forum: Nostalgia & memories 04 September 2018, 10:02
Replies: 2,014
Views: 288,689
Posted By ajk
Workbench doesn't really have a provision for...

Workbench doesn't really have a provision for shortcuts in the sense that Windows does. You can create soft links using the command line interface and the MakeLink command, but it's not something...
Forum: Nostalgia & memories 04 September 2018, 07:17
Replies: 2,014
Views: 288,689
Posted By ajk
Also remember that "leaving out" an icon isn't...

Also remember that "leaving out" an icon isn't making a shortcut, it's leaving out the actual file. So if you no longer want it on the workbench at some point, don't delete it, use "put away".
Forum: support.Hardware 30 August 2018, 17:59
Replies: 8
Views: 399
Posted By ajk
I would say no. Most things that need 2.x are...

I would say no. Most things that need 2.x are only useful when combined with extra resources. You will lose a lot of compatibility with things that expect 1.3.
Forum: support.Hardware 29 August 2018, 19:19
Replies: 148
Views: 41,437
Posted By ajk
@browrp For dimensions, it's mostly the...

@browrp

For dimensions, it's mostly the diameter that matters. A little taller or shorter is fine.

Ripple current and other detailed specs don't really matter.

I buy Kemet for the...
Forum: Amiga scene 29 August 2018, 14:28
Replies: 67
Views: 3,677
Posted By ajk
The Amiga scene certainly wasn't dead or dying 4...

The Amiga scene certainly wasn't dead or dying 4 or 6 years ago. There was a low point for Classic interest in the late 90s and early 00s when the last users of expanded systems either turned to next...
Forum: Amiga scene 29 August 2018, 07:54
Replies: 67
Views: 3,677
Posted By ajk
Well, the number of A1200 systems out there...

Well, the number of A1200 systems out there probably hasn't diminished by much in three years but it certainly hasn't grown, either. There are simply more people looking for one now, the "retro...
Forum: support.Hardware 29 August 2018, 07:43
Replies: 148
Views: 41,437
Posted By ajk
If the slight price difference isn't an issue (a...

If the slight price difference isn't an issue (a set of caps will be in the $15 range vs maybe $5 for standard ones), I'd go with solid polymer.
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