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Search: Posts Made By: Loedown
Forum: MarketPlace 04 October 2015, 11:33
Replies: 0
Views: 315
Posted By Loedown
[SELL] VIC-20 Manuals Lot

Programmer's Reference Guide
VIC memory module jumper settings card / info
VIC-20 Machine Code
How To Make Computer-Controlled Robots For C64, VIC-20, Spectrum & BBC
VIC-20: Easy Guide To Home...
Forum: MarketPlace 11 September 2015, 11:47
Replies: 0
Views: 263
Posted By Loedown
Rockby Electronics Selling 68000-P10 $5 Each

https://www.rockby.com.au/Rockby/Mailer/CLEAR025_3.htm#Page3
Forum: MarketPlace 15 March 2015, 12:08
Replies: 480
Views: 103,963
Posted By Loedown
CIA From Voyager_1701e

As the title says, he was good enough to send them down and get me out of trouble, thanks very much.
Forum: MarketPlace 15 February 2015, 04:01
Replies: 2
Views: 567
Posted By Loedown
Vesalia have the 391078-01 or 1MHz version, I...

Vesalia have the 391078-01 or 1MHz version, I couldn't find a 2MHz version.

What's the problem with the board you have, water damage, battery damage or just not booting? I assume it's an A4000...
Forum: MarketPlace 12 February 2015, 12:26
Replies: 2
Views: 567
Posted By Loedown
Looking To Buy, 8520A-1PL or 391078-02 A4000 CIA

Title says it all, new or used I don't care, just need one if you have one to spare and an urgent desire for money in your pocket. Cost including shipping to Australia please.

Or if you have a...
Forum: Hardware mods 14 November 2014, 13:25
Replies: 19
Views: 3,475
Posted By Loedown
Anything is possible, time permitting isn't...

Anything is possible, time permitting isn't always as forgiving.
Forum: Hardware mods 07 November 2014, 12:13
Replies: 19
Views: 3,475
Posted By Loedown
I / we are not trying to be smarter than the...

I / we are not trying to be smarter than the designers but instead working on a technique to help preserve the boards with current technology, many pieces of equipment get an upgrade as technology...
Forum: Hardware mods 06 November 2014, 14:27
Replies: 19
Views: 3,475
Posted By Loedown
Commodore hardware is fairly forgiving which is a...

Commodore hardware is fairly forgiving which is a blessing and a curse (consider timing issues with accelerators).

My main consideration for this project was not so much for the leaking of the...
Forum: Hardware mods 06 November 2014, 12:58
Replies: 19
Views: 3,475
Posted By Loedown
The only capacitors that have any bearing on the...

The only capacitors that have any bearing on the audio path are C433 and C443 apart from the other two 22uF (in / out). Considering the Amiga's grittiness anyway I doubt whether most people would...
Forum: Hardware mods 06 November 2014, 02:24
Replies: 19
Views: 3,475
Posted By Loedown
There's a world of difference between aluminium...

There's a world of difference between aluminium surface mount caps and through hole electrolytics, put the two side by side and I know which will fail first.
Forum: Hardware mods 05 November 2014, 10:36
Replies: 19
Views: 3,475
Posted By Loedown
I'll try to answer everything. @Anemos: I...

I'll try to answer everything.

@Anemos: I replaced all the caps on my A4000 board which has become little more than a test bed for anything I want to do to it. The problem I had before was that I...
Forum: Hardware mods 05 October 2014, 11:02
Replies: 19
Views: 3,475
Posted By Loedown
Full A4000 With Ceramic Capacitors + Technique

Been a while.

I've finally finished off my A4000 Rev B with full ceramic capacitors using a polyimide heater and a 450W PC PSU.


http://thumbnails109.imagebam.com/35569/e23696355685189.jpg...
Forum: MarketPlace 21 September 2014, 10:38
Replies: 0
Views: 384
Posted By Loedown
Zorro 2 Network Card + IBM PS/1

I'll offload it all elsewhere, no interest whatsoever.

Individual Computers 3CC network card with Easynet, card is definitely working, IDE section hasn't been used so I can only assume it works....
Forum: support.Hardware 04 May 2014, 04:24
Replies: 21
Views: 1,920
Posted By Loedown
You need a way of testing each chip, I will look...

You need a way of testing each chip, I will look around to see if anyone has made a cheap DIL ram tester.
Forum: Hardware mods 12 April 2014, 07:52
Replies: 14
Views: 1,622
Posted By Loedown
So I got myself an 8mm chunk of steel plate...

So I got myself an 8mm chunk of steel plate today. I will need to modify the temperature sensor slightly as it reads more accurately off the leads than it does the body of the TMP36, this I knew...
Forum: support.Hardware 12 April 2014, 02:29
Replies: 21
Views: 1,631
Posted By Loedown
Cool, nothing worse than wasting money on...

Cool, nothing worse than wasting money on something that doesn't fix your problem.
Forum: support.Hardware 11 April 2014, 23:50
Replies: 21
Views: 1,631
Posted By Loedown
I would have suggested resoldering the ROM...

I would have suggested resoldering the ROM sockets would be the place to start, ordering new ROMs is highly unlikely to fix your problem.
Forum: support.Hardware 11 April 2014, 15:44
Replies: 21
Views: 1,631
Posted By Loedown
One could assume a dry joint / ROM problem...

One could assume a dry joint / ROM problem because changing the screen colour before the animation of the disk into the drive in 3.1 would be one of the early commands in Kickstart, then if an...
Forum: Hardware mods 11 April 2014, 06:01
Replies: 14
Views: 1,622
Posted By Loedown
A solution for the TMP36, using a female bullet...

A solution for the TMP36, using a female bullet crimp, opening up both ends and drilling a hole through it. The wire is rated to 200 or 300 degrees. Next step is to heat up an A600 scrap board and...
Forum: Hardware mods 10 April 2014, 14:19
Replies: 14
Views: 1,622
Posted By Loedown
Shots are Left to Right. 1. Board before any...

Shots are Left to Right.

1. Board before any work done other than capacitor removal

2. Close up sound area caps removed

3. Battery area before cleaning

4. After vinegar bath with two...
Forum: Hardware mods 10 April 2014, 14:07
Replies: 14
Views: 1,622
Posted By Loedown
A Hash Of Photos

http://thumbnails111.imagebam.com/31989/3732d4319889730.jpg (http://www.imagebam.com/image/3732d4319889730) http://thumbnails109.imagebam.com/31989/82a149319889816.jpg...
Forum: Hardware mods 09 April 2014, 16:48
Replies: 14
Views: 1,622
Posted By Loedown
Also take the plate off A4000 boards to avoid...

Also take the plate off A4000 boards to avoid surface rust that covers the Mouse / Joystick ports. It took about 9 hours to dry the board, I had to go out half way through so I stopped the oven and...
Forum: Retrogaming General Discussion 09 April 2014, 08:28
Replies: 10
Views: 1,556
Posted By Loedown
Fair enough, I also have an NS5R with MT-32...

Fair enough, I also have an NS5R with MT-32 support but I remember it being very different to the SC-55.
Forum: Hardware mods 09 April 2014, 08:25
Replies: 14
Views: 1,622
Posted By Loedown
Long tomorrow, been sick. Washed the board...

Long tomorrow, been sick.

Washed the board again, this time for 1 hour 40 minutes in solution of around 2 parts water to 1 part lemon juice and the board looks quite a bit cleaner, it's drying now...
Forum: support.Hardware 09 April 2014, 08:20
Replies: 15
Views: 1,083
Posted By Loedown
Look at your rails first, changing random parts...

Look at your rails first, changing random parts isn't doing you any favours and get a new NE555 from your local electronic store or even Ebay, very inexpensive.
...
Forum: support.Hardware 08 April 2014, 11:36
Replies: 15
Views: 1,083
Posted By Loedown
Soft reset is tacked into the reset circuit. On /...

Soft reset is tacked into the reset circuit. On / off power light would probably indicate a hardware fault in the main board where it's powering up into a short and shutting down again, ad infinitum....
Forum: support.Hardware 08 April 2014, 04:38
Replies: 15
Views: 1,083
Posted By Loedown
It could also be a bad PSU, repeat flashing of...

It could also be a bad PSU, repeat flashing of caps lock could indicate it's powering up then shutting down, powering up ad infinitum.
Forum: support.Hardware 08 April 2014, 00:51
Replies: 15
Views: 1,083
Posted By Loedown
Got access to an oscilloscope? Look for the reset...

Got access to an oscilloscope? Look for the reset pulse from the NE555 instead of randomly changing components as some have suggested. I documented a case where I had one that took about 7 minutes to...
Forum: Hardware mods 06 April 2014, 13:48
Replies: 14
Views: 1,622
Posted By Loedown
I took the capacitors off my A4000 board in...

I took the capacitors off my A4000 board in preparation for washing, took out the socketed chips ( Super Buster, Kickstart & one socketed logic chip U103 ), took pictures before and after.

The...
Forum: Coders. General 31 March 2014, 10:33
Replies: 153
Views: 79,782
Posted By Loedown
I laughed too when I found it, programming PIC...

I laughed too when I found it, programming PIC reminds me of that :)
Forum: Retrogaming General Discussion 31 March 2014, 10:32
Replies: 10
Views: 1,556
Posted By Loedown
I have a Roland SC-55 which does have MT-32...

I have a Roland SC-55 which does have MT-32 support, no idea how accurate it is to the original.
Forum: Coders. General 31 March 2014, 09:07
Replies: 153
Views: 79,782
Posted By Loedown
I found this on Cheezeburger

I found this on Cheezeburger
Forum: support.Hardware 28 March 2014, 23:13
Replies: 46
Views: 10,096
Posted By Loedown
The only two being stacked are the 2 x 47uF,...

The only two being stacked are the 2 x 47uF, everything else I have here are the exact values. Electrolytics are more reliable than they were, agreed, but the technology is anything but good, solid...
Forum: support.Hardware 28 March 2014, 22:11
Replies: 46
Views: 10,096
Posted By Loedown
Explain to me why you think that future proofing...

Explain to me why you think that future proofing a machine is crazy, to rid yourself of a plague that has burdened several of the Amiga machines?
Forum: MarketPlace 28 March 2014, 04:07
Replies: 63
Views: 8,903
Posted By Loedown
Don't get me wrong, I do appreciate as probably...

Don't get me wrong, I do appreciate as probably does everyone else, that you took the time to contact him.
Forum: MarketPlace 27 March 2014, 16:16
Replies: 63
Views: 8,903
Posted By Loedown
Well would you throw $8,500 at an unknown sale?...

Well would you throw $8,500 at an unknown sale? The machines could be just shells and keyboards. Caveat Emptor.
Forum: support.Hardware 27 March 2014, 16:11
Replies: 21
Views: 2,295
Posted By Loedown
OP stated it hasn't had a knock, I've heard of...

OP stated it hasn't had a knock, I've heard of shadow masks coming loose without a knock and that's why I suggested it. The other possibility is that the key that holds the yoke to the tube, under...
Forum: MarketPlace 26 March 2014, 19:47
Replies: 63
Views: 8,903
Posted By Loedown
Piecemeal, string 'em along.

Piecemeal, string 'em along.
Forum: support.Hardware 26 March 2014, 19:41
Replies: 46
Views: 10,096
Posted By Loedown
So I got myself a TMP36GZ, it outputs 10mV per...

So I got myself a TMP36GZ, it outputs 10mV per degree increase in temperature from -40 degrees to 125 degrees C, it uses a 0.5V offset so it can show negative temperature. So using a small PIC,...
Forum: support.Hardware 26 March 2014, 19:28
Replies: 11
Views: 1,491
Posted By Loedown
Ah yes, exactly why I use ATX supply for my...

Ah yes, exactly why I use ATX supply for my A2000. I hope you can fix the board but I would suggest it may need many chips replaced.
Showing results 1 to 40 of 1930

 
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