diff --git a/_source/_posts/2025-03-23-ti99-4a-restoration.md b/_source/_posts/2025-03-23-ti99-4a-restoration.md index f10a72d..8b1dad8 100644 --- a/_source/_posts/2025-03-23-ti99-4a-restoration.md +++ b/_source/_posts/2025-03-23-ti99-4a-restoration.md @@ -18,6 +18,10 @@ The machine is a European (PAL) model (6 pin DIN component video output, which w Model PHC004A (silver console), serial R030174 / 44 83 RCI. +{% figure caption:"Type plate" %} +![Type plate](assets/TI-resto/type-plate.jpg) +{% endfigure %} + When I opened it up, I first noticed that the VDP was missing! My father mentioned a former colleague opening up the machine at some point... So I started with getting a replacement 9929 from eBay. @@ -28,10 +32,33 @@ consistent with the failure mode I remember from years back when I had last trie ### Visual inspection -The motherboard shows no obvious sign of damage such as corrosion or swollen electrolytics caps. +The mainboard shows no obvious sign of damage such as corrosion or swollen electrolytics caps. + +{% figure caption:"Motherboard (front)" %} +![Motherboard (front)](assets/TI-resto/mainboard.jpg) +{% endfigure %} + +{% figure caption:"Motherboard (back)" %} +![Motherboard (back)](assets/TI-resto/mainboard-back.jpg) +{% endfigure %} + +{% figure caption:"Motherboard (PCB version marking)" %} +![Motherboard (PCB version marking)](assets/TI-resto/mainboard-marking.jpg) +{% endfigure %} + +{% figure caption:"Closeup of video output section (EU model)" %} +![Closeup of video output section](assets/TI-resto/EU-VDP-closeup.jpg) +{% endfigure %} + ### Voltages +The PSU board shows no obvious sign of damage, either. + +{% figure caption:"PSU board" %} +![PSU board](assets/TI-resto/PSU-board.jpg) +{% endfigure %} + * the voltages provided by the mains transformer look good * the DC voltages at the output of the power supply board look good diff --git a/_source/assets/TI-resto/EU-VDP-closeup.jpg b/_source/assets/TI-resto/EU-VDP-closeup.jpg new file mode 100644 index 0000000..7cd6686 Binary files /dev/null and b/_source/assets/TI-resto/EU-VDP-closeup.jpg differ diff --git a/_source/assets/TI-resto/PSU-board.jpg b/_source/assets/TI-resto/PSU-board.jpg new file mode 100644 index 0000000..6a9de54 Binary files /dev/null and b/_source/assets/TI-resto/PSU-board.jpg differ diff --git a/_source/assets/TI-resto/mainboard-back.jpg b/_source/assets/TI-resto/mainboard-back.jpg new file mode 100644 index 0000000..0ba3b6a Binary files /dev/null and b/_source/assets/TI-resto/mainboard-back.jpg differ diff --git a/_source/assets/TI-resto/mainboard-marking.jpg b/_source/assets/TI-resto/mainboard-marking.jpg new file mode 100644 index 0000000..c93120c Binary files /dev/null and b/_source/assets/TI-resto/mainboard-marking.jpg differ diff --git a/_source/assets/TI-resto/mainboard.jpg b/_source/assets/TI-resto/mainboard.jpg new file mode 100644 index 0000000..de101d4 Binary files /dev/null and b/_source/assets/TI-resto/mainboard.jpg differ diff --git a/_source/assets/TI-resto/type-plate.jpg b/_source/assets/TI-resto/type-plate.jpg new file mode 100644 index 0000000..3503c73 Binary files /dev/null and b/_source/assets/TI-resto/type-plate.jpg differ