Btw, somebody who knows how to switch the display does it in 5 minutes, another 10 minutes to
clean out all the other junk and residue.
If it takes longer there is a problem, and if the handset has to be sent to another service location,
there is a risk of additional problems.
Ilmarinen
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. |
