A big disappointing this Commodore SX-64 USA purchased for spare parts to fix aesthetically one of my SX-64 PAL.

Why disappointing? because from the photo’s looked in a very bad shape, rust stains, various diseases and not working.

Conversely after removed the shit from the external case, replaced the booring PLA (906114), general cleaning + keyboard / Floppy Drive test and replaced one keyboard lock, the SX-64 is fully working and aesthetically in good condition.

Now i have for myself four SX-64 where the fourth is NTSC/USA, but honestly i was not looking for the USA version.

I am really unlucky :D

Gallery of the cleaning and repairing:

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Commodore A3640 CPU Card 3.2 Upgrade.

I have updated only the GAL (U209) because the GAL (U204) was already replaced.

Gallery of the work:

Commodore Amiga 4000 Replacing Battery Clock with a CR2032.

Gallery of the work:

Download: AmigaWiki GAL/PAL/PLD (2003)

This is the official demo party results from BCC #10 (Top 3 Entries only). See also the CSDB BCC #10 section for more informations and download.

C64 Demo:

• Tangled Up by Delysid
• The Mayday Show by Mayday!
• TIS by Bonzai

C64 Music:

• Oldschool Heaven by c0zmo
• Toca Off Alone by Snabel
• Press Space, Release Power by Gaetano Chiummo

C64 Graphics:

• Der Wahrsager by Oni/Luisa
• Voyage to Pandora by Grass
• Moon by awsm

C64 Mixed:

• CRX Race (Game)
• David Bowie Collection (SIDCol)
• Stack Up (Game)

Productions released outside compos:

• Crackers Revenge +7DGH by Hokuto Force (Crack)
• Dungeon Wizard +DT 101% (Crack)

Download: BCC #10 full Party stuff (1191)

source: csdb.dk

The Amiga 4000 motherboard can be ´hacked´ to handle 64Mb of Fast Memory, to do this, you have to solder a new GAL and make some bridges between FASTRAM SIMM -> GAL -> CHIP RAMSEY.

This work is not complicated but you need to have a good practice with the soldering iron and PLCC soldering.

Gallery of the hack:

Download: Amiga 4000 64Mb Hack (1719)

source: Cosmos Blog John Hertell Blog

Commodore Amiga 4000 updating GAL 16V8 for IDE PIO-2.

After doing this update of the two GAL’s 16V8 from PIO-0 (commodore original) to PIO-2 mode the access of the IDE drives are 25% more faster.

Gallery of the work:

Source & Download: amigawiki.de

List of works that have been made:

• 1 x Commodore Amiga 4000 – Full Recap.
• 3 x 68040 -> 68(EC)060 Adapters – Testing & Fixing.
• 2 x Commodore A3640 – Full Recap and Polarity Fix.
• 1 x Commodore A3640 – Oscillator Socket.
• 1 x Burning Kick 3.1 patched version for 68040 -> 68060 adapters*

* exec.library has been patched to support a full Motorola 68060 CPU with FPU. This patch is not needed for the EC version without FPU.

Gallery of the work done:

Download: Kickstart v3.1 Exec Patch Version for 3k & 4k - Ready to Burn! (1611)

This post is dedicated to all the people that do not remove the damn battery on any hardware, not only Amiga.

It was better don’t make this repair, i knew from the beginning, when you find an acid lake that takes away everything, pad, pcb tracks and some welding is better left alone, however the Amiga 4000 was working perfectly but without the a way to Save or Load the system Date.

I wanted to challenge for the umpteenth time this problem where anything that i make comes off and worsens the situation already dramatic.

Conscious that the final work was a colossal shit, because with exploded pad, broken track and the through holes between layers fucked up you can not do miracles, you can only hope doing your best.

In fact, it works perfectly, but it remains a shitty job, unwatchable.

Moral: REMOVE ALWAYS THE BATTERIES and if the pcb is corroded by the leaked acid clean very well using appropriate products, not with the usual alcohol or a bath with soap, used products like PCC KONTAKT CLEANER or like, scratching well the pcb and also the holes between layers using a needle fine.

Gallery of the repair:

Defect:

• The joystick on port #2 always goes in one direction (left).

Repair:

• Replaced the two 74HCT166 (SMD) that control the logic of both joystick ports have been eaten by the acid leaked from the battery and a cause of a short circuit both are dead. (please see photos)

Gallery of the repair: