Dear Arnold The man who knows all at EVERGREEN laser, Phil Fostini, can likely suggest a solution... F Preffer At 11:32 AM 6/21/02 +0100, Arnold Richard Pizzey wrote: > >Greetings all, > >I am experiencing a problem with my I-90, If I try to advance the current >beyond 25A I get a lot of electrical noise -sounds a bit like arcing but >I've checked all components on the power supply and laser head and find no >evidence of this. > >The voltage across TP16-36 is 240V with the tube not struck and 190V at 25A > >also the relay next to TP28 keeps closing -I think that the tube might be >trying to take gas fills but I think that the autofill has been disconnected. > >If anyone has any experience of this problem I'd appreciate it if they let >me know > > >Regards, > > > >Arnold > > >_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ > Arnold Richard Pizzey > Department of Haematology > Royal Free and University College London Medical School > 98 Chenies Mews > London WC1E 6HX > U.K > > voice: +44 020-7679-6234 > Fax: +44 020-7679-6222 > email: a.pizzey@ucl.ac.uk >_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/ > Frederic I. Preffer Department of Pathology Charlestown Navy Yard- 7140 149 13th Street Massachusetts General Hospital -East Charlestown, MA 02129 voice [617] 726-7481 fax [617] 724-3164
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