Konami 052535 Joy !

Well the scraping and squinting finally bore fruit. I managed to meter out the film resistors and rounded them to the nearest commonly available values. The transistor i managed to destroy whilst removing it but i just replaced it with a common NPN BC548 and it seems happy enough.

For anyone wishing to fix or build a replacement this pic should help. The grey boxes are the 0 Ohm links.



I ended up fixing the original hybrid rather than building a replacement. It works a treat .. yay !

Konami 052535 Woes

As a break from the current crop of Bubble Bobble fun ive got another project on the side, namely a poorly Konami Sunset Riders.

The PCB was purchased knowing that it had a faulty custom on the RGB output stage causing a complete lack of red onscreen. The custom is a small 9 pin hybrid which intact looks like this.



Unfortunately the one removed from my PCB has been flexed and has cracked vertically. So armed with a scalpel and some patience i have removed most of the epoxy and so it now looks like this.



As you can see it contains a transistor, 4 surface mounted zero ohm links (one was cracked by the damage and 13 film like resistors printed directly on the wafer like pcb.

Time to break out the meter and start squinting methinks :)