Black Hole
Gottlieb, 1981What's the solution? Light sand and re-tin each strip? I've already tried eraser, and I did treat the area with vinegar, just in case. Testing each contact strip, most don't show continuity between the strip and the other end of each trace. Gottlieb Black Hole, revision 3 sys 80
IMG_4842 (resized).JPGDremel with an abrasive buff, 300 grit. It’s not very aggressive on the masking and will clean up the edge connectors nicely.
Clean off the corrosion with any method you choose that won't destroy the edge connector.
Then re-tin them with 63/37 solder. If you don't know what that is, oh well.
Good luck.
Quoted from swanng:Clean off the corrosion with any method you choose that won't destroy the edge connector.
Then re-tin them with 63/37 solder. If you don't know what that is, oh well.
Good luck.
I know, thanks. Got them shiny again, now on to re-tin.
until cleaned up you're unlikely to get proper contact with your meter probes for continuity readings.
Quoted from Rikoshay:until cleaned up you're unlikely to get proper contact with your meter probes for continuity readings.
I've been able to check most of the traces, just to see what I'm looking at. So far, I have continuity on everything. I take it the Ni-Wumpf board is no longer available. If I decide to go that route, it's either Pascal or Rottendog. Or of course, the 3-in-1 replacement, PI-80 is there if I really want to make it simple. I got the disc motor working, but it's noisy as f, so I will replace it anyway.
I feel this machine was in dry storage for a long time. The rubbers were rock hard and brittle. Plastics are warped, will replace. I'll do a complete teardown once I get the heartbeat back into the game.
Are there any suppliers who sell reset circuit packages of parts? Also, I see info on a Dallas Maxim 1811 Reset Generator, but nowhere do I see such for sale as an option?
I use a combination of neutralizing with vinegar, scraping with exacto, scotch bright abrasive pads for the Dremel, fiberglass pen, and eraser. Also extra flux and use solder to retin then solder wick to remove excess solder. After that a wipe with rubbing alcohol and over again with eraser. Been very happy with the results.
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