Posts tagged "Trace Repairs"

Specifically those repairs that involve repairing damaged traces or vias on a printed circuit board.

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Raising the PC-8801MH

Hirofumi Iwasaki’s book on PC-8801FH/MH repair says that the head loading solenoid is so loud that you should be careful using the computer in an apartment at night, lest the neighbours complain. I am not hearing that, or any other noises from the floppy drives. Let’s investigate.

thumbnail for "A "Practice" Mac LC"

A "Practice" Mac LC

My first real computer was a Macintosh LC. They’re not held in especially high esteem, and they haven’t been redeemed by history, either. It’s not hard to see why: a pitifully low RAM limit (10MB) introduced alongside a more RAM-hungry System 7, generally poor performance across the board, and cheap components. I still have mine, but this isn’t it.

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Sega Genesis - corroded RAM trace

A Model 2 VA1.8 Sega Genesis purchased off eBay as non-working presented as non-working. After several days of diagnosis, tracing and research into the system, I finally figured out that the problem was the corroded trace I identified right off the bat.

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3d-printing accelerators amiga amiga2000 amiga2500 amiga3000 amiga500 apple apple-ii appliance aquarius arcade atari atari-jaguar atari2600 atarist bandai basic-master batteries bose-wave-radio bungo calculator capacitors casio cdrom cf2700 cleaning clone coco coleco coleco-adam colecovision commodore commodore64 compile computer console corrosion cpm crt custom-chip-failure derivavision dick-smith-creativision-wizzard dumping failure famicom flashfloppy floppy fm7 forklift-mac fujitsu game-gear games gemini genesis gotek guest-post harddrive hb101 hitachi homemade-hardware homemade-software ibm ique jb-1260ma jc-1404hma keyboard keyboard-converter kyocera lcd leako ljn-video-art macintosh macintosh-classic-ii macintosh-lc macintosh-lc520 macintosh-quadra800 macintosh-se macintosh-tv magic-smoke mark-iii master-system mattel mbc555 mini5 mod modelm mouse mr-pc msx nec neo-geo nes nintendo nintendo-ds nomad octane operating-system panasonic pc-tv151 pc60 pc6001 pc6001mkII pc6601sr pc8300 pc88 pc8801mh pc8801mkii pc8801mkiisr pc98 pc9801 pc9801nst pc9801ra2 pc9821 pc9821ap2 pickups pippin pirate-hardware pizzabox playstation power-supply pv7 ram repair retrochallenge retrochallenge-april-2018 retrochallenge-october-2021 retrochallenge-october-2022 retrochallenge-september-2018 reversing sanyo sbc6809e sc3000 sega sega-columns sg1000 sharp sharp-x1-turbo silicon-graphics sinclair snes snk soggy1000 sony sparcstation storage sun super-famicom supervision tandy tandy-102 tandy1000 tandy1000ex tandy1000sx tandy1000tx texas-instruments ti83-plus tomy tomy-pyuuta trace-repair trs80 trs80-mc10 ts1000 video vtech vtech-precomputer watara wonderswan word-processor x68000 x68000-ace x68000-pro zx81