To: 49thMIMOMander who wrote (19451 ) 4/9/2002 6:30:08 PM From: carranza2 Read Replies (1) | Respond to of 34857 Should have called Click and Clack.btw, spent some 20 hours disassembling my oil burner and heater last friday night, saturday morning and day, first time, all of it, after it stalled the fourth time in a year, although it has been running for 20 years. I almost managed to assemble it in all the wrong 15 ways until I did the correct 16th possibility, but won't do those mistakes another time. Now I also know I could have fixed it in 5 minutes, the problem was obviously a combination of 3 things, xtremely simple to understand if one has at least once dis- and assembled the whole thing and figured out how it works. Well, additionally it took me some 10 hours to figure out the schematics of that old relay controller, and although there were two transistors there, they were not the problem. Pretty smart design, except for that one problem it got. The failure of all components had been designed as "fail-safe" and even possible to test and verify, except this one I could not figure out. Which obviously makes that too easy, if one knows it. Now, in case those two transistors would actually get tired and old, anyone who knows what SGS27240 and 27235 really are, or were, many years ago?? (would save me the time to unsolder them, measure them, and find two contemporary and similar, or additionally redimension the resistors) Btw,btw, on the other hand there are already burners which send a SMS message when there is a problem, but I additionally want to have them collect data and analyze gas content, in and out temperatures, and get a jpg picture of the flame, color and form, as a MSM message.