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Hello,

i have found this very nice Defender prototype, but it does not run. The borads are prototype too, serial numbers engraved by hands.
The power is fine 5, -5, 12 and so on. I changed the RAM, repaired the reset and watchdog circuit, changed the ribbon cable.
Now i have a sound when powered up. On the screen different patterns. Sometimes very big blue stripes, sometimes very colourful small dots, sometimes grey dots.
The LEDs on the ROM Boards vary. Most of the times all are light. Sometimes they light up only by start and then they are off. Sometimes i have different leds on and different of.
I am not a pro in fixing. I am more a pinball guy. So i give up and searching for someone who can repair my boards.
So that is my question, is there someone out there who can help me fix my boards? Would be nice to find someone in Europe.
Thanks a lot
Dennis
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