Topic
7 videos.
Hobbyist or repairer
Why does a FIC 486-VC-HD motherboard refuse to boot? A dead RTC module is the cause, and vswitchzero replaces it before examining a caching problem that hurts memory latency on many 486 boards.
Hobbyist or repairer
Replacing sockets, reset and enable circuit chips and removing a shorted trace brings a Midway Galaga board back, using a Fluke 1090A to chase reset, ROM and RAM faults.
Hobbyist or repairer
Why would an Oric Atmos show an "impossible" RAM failure? Noel's Retro Lab expects a fairly routine repair and ends up hunting for where the fault really lies.
Hobbyist or repairer
Why does an Amstrad CPC 464 show a garbled screen? Noel's first suspect, the CRT controller, turns out to be wrong, and the hunt moves through power, the gate array, ROM, Z80 and RAM.
Hobbyist or repairer
A 1987 PC XT clone with a RAM problem goes on the bench, and the maker makes a new BIOS ROM from the Super PC/XT Turbo BIOS and tests it.
Hobbyist or repairer
Noel diagnoses an Amstrad CPC 6128 that had 12V fed into its 5V connector, finds mostly RAM chips failed, then fits a P6KE 6.8A diode to guard against a repeat.
Hobbyist or repairer
Two of five Famicoms under repair come first, one with an SRAM fault and one with a power switch problem, alongside a composite AV mod and controller clean-up.
