hi all, thanks for suggestions for this fault.. relay and capacitor tried....it was indeed cured by a capacitor [0.47uf 630v] without the need for a relay. now i have another question! i am trying to find why GR43 number 15 on the schematic strikes as soon as power is applied and stays lit, until it gets is extinguish pulse, it then after a few seconds re-strikes, it should not strike until it receives a pulse from ER32 tube 8 on the schematic...i have changed capacitors and checked values of resistors around this tube and cant find a fault...is it safe as far as the GR43 to disconnect the trigger and leave it floating, at least then i know if it striking spontaneously or getting a trigger pulse when it should not....thanks, bob
On Friday, March 28, 2014 3:31:14 PM UTC, Dekatron42 wrote: > > Hi Bob, > > Would it be possible for you to use a relay in between the wiper contact > and the trigger tube? Maybe the wiper could drive a relay and you then use > the relay contacts to drive the trigger tube, just for testing if that will > solve the problem. > > The problem with old SRBP PCB's is that contacts that rotate on them leave > a track of dirt which will carry leakage currents. Sometimes you can get > rid of this by washing them in an ultrasonic cleaner and also by bathing > them in isopropyl alcohol, some need mechanical cleaning to remove the > conducting track and some are impossible to clean enough which leaves the > only option of letting them control a relay that then controls the original > circuit. > > /Martin > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/7218d03b-36d3-4843-b5e5-0c44a438d278%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
