Tech / Repair Archive

Amiga (various models) Kickstart switcher

The Amiga has had multiple firmware versions over the years, known as “Kickstart”.  Unfortunately a lot of software that hits the hardware directly is affected by which version of Kickstart you’re using, leading to various hardware and

Thunder Blade / Afterburner capacitor list

I’m having to recap a Thunder Blade PCB to try to eliminate a noise problem in the audio – the schematics exist online but the audio section is barely readable.  Aside from the ‘supercap’ – here’s a

TourVision – obtained a V4 integrated motherboard

I just picked up an integrated V4 motherboard and 9 carts, main TV article updated here: TourVision – like a Playchoice for PC Engine

Amiga 2000 internal floppy switchers

I have recently been renovating and upgrading the Amiga 2000 which I have owned for over a decade, but for most of that time spent its life as a monitor stand after I accidentally formatted the hard

Commodore SID chip variation videos

If you’ve been watching my streams or VODs recently on Twitch, you’ll have seen that I’ve got back into Commodore 64 stuff.  Since I only stream real hardware like the hideous poser that I am, I got

TourVision – V1 system discovered!

A contact of mine in Spain came across a strange motherboard while searching for carts for me – while it’s of limited usefulness due to the limited number of V1 cartridges and functionality, it answered many lingering

Using MAME to assist with repairing Nova 2001

If you’ve seen my recent new arrivals post, you may have noticed a broken Nova 2001 PCB.  I’d had a quick look at it when it arrived  and managed to at least capture the error message, but

Nichibutsu Mahjong visual glitches

I’ve seen this on three different boards now, and it turns out that certain families of Nichibutsu Mahjong hardware can have problems with colour bleeding and minor visual glitches.  For example Club 90’s and The Lady Hunter

Teenage Mutant Ninja/Hero Turtles RAM fault

This one is a simple fix but I thought I’d use it to demonstrate a technique for making minor track repairs.  I received a TMHT PCB today which on testing showed this mess: While the screen is

TourVision picture problems

As discussed in other articles, the TourVision system is just a PC engine automation platform & interface.  The RGB output of PC Engine consoles is rather low, especially compared to JAMMA standards, and as such the motherboard