Eric, I dug out the manual. I actually poses 2 of these units, though have not done anything with them for years. Remove the front panel and you will find a fuse panel on the left. Check these fuses:- F11 &12 both 1 amp and supply the relays via that key switch with 24v AC. F17 & 18 1.4 amp supply to the water flow circuit with 12 full wave rectified ac. There are a number of other possibilities, but start with these as this is where you have been jumpering out things. best regards -----Original Message----- From: Support and use of X-ray diffraction instrumentation [mailto:[log in to unmask]] On Behalf Of Eric Hoffman Sent: Tuesday, September 25, 2007 6:19 To: [log in to unmask] Subject: Re: philips pw-1730 Mike We bypassed both the key switch and water flow valve to see if either were the problem to no avail. Eric Hoffman, Phd, P.Geo. General Manager Activation Laboratories Ltd 1336 Sandhill Drive Ancaster, Ontario L9G 4V5 Canada ph-1-905-648-9611 ext 123 fax-1-905-648-9613 e-mail: [log in to unmask] <mailto:[log in to unmask]> website:www.actlabs.com _____ From: Support and use of X-ray diffraction instrumentation [mailto:[log in to unmask]] On Behalf Of Mike Handley Sent: Tuesday, September 25, 2007 12:05 AM To: [log in to unmask] Subject: Re: philips pw-1730 Eric, what do you mean by "have bypassed the switch in the back of the unit". Are you talking about the water flow switch, which would not be a good idea even for a very short time, or the key switch? Did you accidentally turn off the key switch which is on the outside of back of the unit, if I am remember correctly. Regards Mike Handley Handley Analytical Services Omega Data Systems (USA) Representing:- Axt X-ray tubes Sigma X-ray flux, and Pt ware Breitlander automatic fusion equipment Rocklabs crushing and grinding equipment 16502 La Avenida Dr Houston TX 77062 Tel: 281 286 8393 Fax: 281 286 0990 Web: http://pages.prodigy.net/mike.handley -----Original Message----- From: Support and use of X-ray diffraction instrumentation [mailto:[log in to unmask]] On Behalf Of Eric Hoffman Sent: Monday, September 24, 2007 10:04To: [log in to unmask] Subject: philips pw-1730 Does anyone know someone in the Toronto- Hamilton area who can service a Philipd PW 1730 xray generator. We turned of the power for routine maintenance of the water filter and it didn't come back on when we turned it back on. We have verified the bulbs are all working, have bypassed the switch in the back of the unit. If the tube were to have coincidently burned out would the high voltage still come on? Is the xray tube part of the safety precautions. Eric Hoffman, Phd, P.Geo. General Manager Activation Laboratories Ltd 1336 Sandhill Drive Ancaster, Ontario L9G 4V5 Canada ph-1-905-648-9611 ext 123 fax-1-905-648-9613 e-mail: [log in to unmask] <mailto:[log in to unmask]> website:www.actlabs.com ______________________________________________ XRD mailing list [log in to unmask] http://www.jiscmail.ac.uk/lists/xrd.html To leave the list use the webpage or send an email to: [log in to unmask] with the text SIGNOFF XRD ______________________________________________ XRD mailing list [log in to unmask] http://www.jiscmail.ac.uk/lists/xrd.html To leave the list use the webpage or send an email to: [log in to unmask] with the text SIGNOFF XRD ______________________________________________ XRD mailing list [log in to unmask] http://www.jiscmail.ac.uk/lists/xrd.html To leave the list use the webpage or send an email to: [log in to unmask] with the text SIGNOFF XRD ______________________________________________ XRD mailing list [log in to unmask] http://www.jiscmail.ac.uk/lists/xrd.html To leave the list use the webpage or send an email to: [log in to unmask] with the text SIGNOFF XRD