28 Dec 2016

Heavy Unit - Kaneko 1989 (repair log)

I'm sorry I missed my weekly publication last week (I was on holiday, well, still am).


This game has a similar hardware to other Toaplan games of the same period.
The game starts but the picture flickers and colours are bad:





Once again this game uses DRAM for graphics and once again all 4 are bad (@ A3, A4, B3, B4).
Once replaced picture is better but sill flicker: some legs of the kaneko custom chip are lifted. I resoldered them, the flickering stopped but colours were still wrong: one of the 2 colour RAM was bad (@ R7). I replaced it and now graphics are back to normal (ok crappy photo here):



This photo is better:


Game fixed.
 

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