This repair was done only for a personal challenge, the computer is still unstable and with several died components.

After a careful cleaning the computer presents these problems:

• TED MOS 8360R2 not working (keyboard doesn’t work) even if i replace the TED doesn’t work, TED also tested on a working C16 doesn’t work.
• PIO MOS 6529 need to be replaced. The keyboard doesn’t work.
• CPU MOS 8501 Dead.
• Joystick ports (see photo)
• Cartridge connector need to be replaced.
• Modulator without lids (Above and Below)
• The sockets of TED and CPU should be replaced.
• Other rusty pieces.

Gallery of the repair:

Commodore 64 repaired ASSY 250425 (1 of 3)

Defect:

• No Video Signal.

Repair:

• Replaced 1 x MOS 8701 R1 (U31)

Commodore 64 repaired ASSY 250425 (2 of 3)

Defect:

• Out of Memory.

Repair:

• Replaced 1 x RAM MT 4264-15 (U21)

Commodore 64 repaired ASSY 250407 (3 of 3)

Defect:

• Garbage Screen.

Repair:

• Replaced 1 x RAM MB 8264A-12 (U22)

The usual modification of a Gotek in HxC this time also with OSD (On Screen Display) support for Amiga 1200.

Gallery:

Video:

source: hxc2001.com

I have received from a friend two Sinclair ZX-81 to repair and taking advantage of the “sinclair” moment :-D i have also repaired one of my ZX-81 that is died staying off for years :-(

Two out of three ZX-81 have the ULA dead, while the third had a dead membrane and some short circuits caused by someone who don’t know how to unsolder/solder properly.

I have recovered the ULA from this last one and repaired the better one of the two ZX-81, i have also installed the Video Composite mod using the ZX8-CCB kit.

I have also repaired my ZX-81 always with the ULA dead and installed the Video Composite mod using the ZX8-CCB kit.

I thank Marco Lucarelli for giving me the Video Composite mod and giving me one of the two ZX-81 (without ULA / dead Membrane and short circuits) for spare parts.

Gallery of the repair:

I have replaced all the electrolytic capacitors of this Amiga 600 motherboard.

Gallery of the repair:

I have replaced the CPU socket of the Amiga 2000 CPU because the computer have a strange boot problems, for example: black screen.

After the replacement the problem has been gone.

Gallery of the repair:

Texas Instruments TI-99/4a Repair.

Defects:

• Black Screen and deafening sound in background.
• Garbage Boot Screen.

Replaced parts:

• 1 x SIGNETICS C2E011 ROM (U610)
• 1 x TMS4116-15 RAM (U106)

Gallery of the repair:

Texas Instruments TI-99/4a Argentine (Spanish) Version Repair.

Defect:

• Black Screen and deafening sound in background.

Replaced parts:

• 1 x TMS 9900NL CPU (U600)
• 1 x Burned Resistor (15 Ohm)

Note: This motherboard has already been repaired by someone at least once.

Gallery of the repair: