(Topic ID: 228755)

Data East CPU board - magic smoke release


By kcZ

11 months ago



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  • 50 posts
  • 7 Pinsiders participating
  • Latest reply 11 months ago by wayout440
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#26 11 months ago
Quoted from kcZ:

I would do this if I had any on hand or had a local supplier to get them asap. I do plan on ordering from GPE as soon as their website is back up.. in the meantime, it is test and if needed replace with components from the spare board

What chips do you need? I have a wide variety, most likely have what you are looking for.

#28 11 months ago
Quoted from kcZ:

I'm thinking the 74LS273 may be next. I checked the pins on the 7408 chips, things seem mostly the same. I checked these while in Diagnostic Mode, flasher test. As the game would cycle the flashers, I would see the voltage on the pins jump. 3.5V on the same pins 7408 to 7408.
Tim, you have a 74LS273 chip?

I used to have a bunch... i was doing a lot of board work for people for awhile. Let me check my stash tomorrow and get back to you.

#47 11 months ago
Quoted from ralphwiggum:

I used to have a bunch... i was doing a lot of board work for people for awhile. Let me check my stash tomorrow and get back to you.

Just checked my parts.. i have 138,164, 244, 373,374.... sorry man.

#49 11 months ago

Congrats.... I find boardwork to be really relaxing and satisfying. Glad you were able to get through it.

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