Woodstocks on the barbie...



#2

Just how fragile are woodstocks when it comes to static electricity? I have a 21, 25, and 27 that were put up a year ago in perfect working order. Now they exhibit blank displays & odd symbols & counters when powered up. They were in a temperature controlled room, not subject to handling for a year. But now they seem to have spontaneously deteriorated. In reading the archives, I'm led to believe it could be old capacitors in the power supplies, or (even worse) static electricity as they were kept in plastic storage boxes with dessicant packets. Any one know the values of those tantalum caps, or a replacement cource for 21,25 ACT chips? I've read the 27 will require an "organ donor", as they're hard to come by.

-John


#3

You may have corrosion growing inside the machines. Open them up (two screws under the top feet) and clean the circuit boards with 91% isopropyl alcohol. Let dry overnight. Often times the culprit is not visible to the naked eye.

The only replacement chips are from another machine. The 21/25/29/67/97 ACT chips are interchangeable.


Possibly Related Threads...
Thread Author Replies Views Last Post
  Re-engineered AA Woodstocks Matt Agajanian 14 2,433 04-15-2012, 02:42 AM
Last Post: Eric Smith
  Accuracy of Woodstocks Matt Agajanian 7 1,441 03-25-2012, 06:54 PM
Last Post: Eric Smith
  Woodstocks - the new gold standard? Michael de Estrada 33 4,863 02-14-2010, 01:34 AM
Last Post: Michael Meyer
  different Woodstocks Bram 8 1,608 09-02-2006, 09:12 AM
Last Post: Bram
  A ? about a few flakey Woodstocks ... Erik 11 1,766 12-31-2005, 11:25 PM
Last Post: David Smith
  Woodstocks ?? G Evans 4 1,072 07-28-2003, 12:24 PM
Last Post: David Smith
  Woodstocks: ACT chip compatibility? (again) Vieira, Luiz C. (Brazil) 3 815 06-16-2003, 12:21 PM
Last Post: Vieira, Luiz C. (Brazil)
  schematics for classics and woodstocks Gary Muhonen 0 561 03-25-1999, 09:01 PM
Last Post: Gary Muhonen

Forum Jump: