Hammerin' Harry (Irem M81) PCB repair

Channel:
Caius Arcade Repairs & Engineering
Subscribers:
434
Published on ● Video Link: https://www.youtube.com/watch?v=wykJh5ttiDo


Game:
Hammerin' Harry (1990)
Duration: 1:51
98 views
6

Symptoms#1 : board boots to a garbage static scren

FIx#1 : replaced a bad 74LS373 @IC39 on CPU board (it routes some address lines to program ROMs)

Symptoms#2 : backgrounds have wrong colors

Fix#2 : reflowed some lifted pins of the surface mounted custom IC 'KNA91H014'@IC1 on VIDEO board.

Symptoms#3 : some inputs don't work

Fix#3 : installed a Caius reproduction instead of a missing 'RGLD8M472J221J' custom resistor array @RA6 on CPU board



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Other Statistics

Hammerin' Harry Statistics For Caius Arcade Repairs & Engineering

At present, Caius Arcade Repairs & Engineering has 175 views spread across 3 videos for Hammerin' Harry, with his channel publishing less than an hour of Hammerin' Harry content. This is less than 0.28% of the total video content that Caius Arcade Repairs & Engineering has uploaded to YouTube.