Commodore Amiga 3000 REV 8.9 (B2) Full Recap.

Restoring the original configuration of a ACT Elek. Apollo 1260

Works that have been made:

• Cleaning the pad and weld residues on the solder side of the 68060 CPU.
• Removing the KIT/Hack to use a SIMM 64MB instead of 32MB. The KIT / Hack not working well.
• Restoration of the power PCB of the CPU and installation of the BD242 transistor (TIP32) in place of a voltage regulator. (Now the PCB is in original state)
• Someone needs to explain me how the fuck do you can use a voltage regulator type LT1085(84) fixed 3.3V instead of a Transistor!
• Overclocking with 80MHz oscillator.

Gallery:

Commodore Amiga CD32 Full Recap.

Gallery of the repair:

Commodore 128 Garbage Screen & Random Memory Problem repair

Defect:

• Garbage Screen in 128 mode and Random Memory problems in 64 mode.

Repair:

• Replaced the MOS 8502 CPU.

Note:

• The problem of the Garbage Screen / Out of Memory / Memory problems of the Commodore 128 is not always a problem of Ram / Multiplexer or Bank Switching.

Gallery of the repair:

This upgrade kit for the standard TI disk controller card allows 80 track drives to be used, such as a 3 1/2″ 80 track floppy.

The modified code supports 40 and 80 tracks for SSSD and 80 tracks for DSSD, whatever drive is designated as the 40 track drive, either #1 or #3, supports 40 track DSDD.

The update is very simple to make, you have to remove the original ROMS and replace with two sockets and insert the two 2532 EPROMS pre-programmed.

Gallery:

Download: FDC Latest ROMS (955)

Commodore Amiga 2000 PSU Upgrade.

I have replaced the PCB of the Commodore Amiga 2000 power supply because tired and died after many years of use and there was not the slightest sense of the repair.

The difficulty to the present day is finding a power supply ATX v1.0 with -5v (white wire) in the later versions of ATX PSU was removed, the Amiga 2000 uses this voltage for the ZORRO cards.

*UPDATE*

If you have trouble to finding an ATX power supply with the -5v output (white wire on the connector) you could use a voltage regulator LM 7905 to adjust the voltage from -12v (available in all ATX power supplies also of the latest generation) to -5v.

Due to the missing TICK signal you need to move the jumper J300 to the position 2-3 and if you have an Amiga 2000 REV4x you need to move the jumper J34 to the position 2-3.

Below the work was done.

Gallery:

12►

source: John “Chucky” Hertell Blog

Some months ago i have decided to upgrade the power supply of my Commodore Amiga 4000 with a good ATX power supply, compact and with a high amperage.

I have found the SFX POWER 2 300w from the German Company: Be Quiet. The power supply is perfectly suited to my needs.

Below the work was done, anything of complex if not fit the PCB inside the power supply of the Commodore Amiga 4000.

Gallery:

Someone has to do this tedious job and also i advise you do not postpone the capacitors replacement.

Macintosh Recap:

• 1 x Macintosh Portable
• 1 x Macintosh SE (battery removed)
• 1 x Macintosh LC520
• 1 x Macintosh Color Classic

Gallery of the Macintosh Recap: