Hi Unless the PRS10 is very unusual in it's operation there are two things to check early in the debug process:
1) Is the oven heating up to roughly the right temperature? 2) The lamp is lit by RF energy. If the oscillator / amplifier supplying the RF isn't putting out as much as it should (or what it should) the lamp will not stay lit. I'd bet on number 2 in your case. There are many other possibilities, but I'd check those two first. Bob On Mar 17, 2013, at 5:22 AM, Dr. Götz Romahn <go...@g-romahn.de> wrote: > dear all, > beeing a silent reader of this list for a while, I now ask my first question. > I have obtained a PRS10 that was declared faulty and it is. The problem I > located in lamp assy. > Lamp ignites only after warming up and pushing by a voltage kick from abt. > 24V to abt 28V on the -24_heat line for some seconds. PRS10 gets locked there > after and rbmon shows a seemingly healthy unit (see attachment). But... > within some 15 to 45 minutes later light from lamp degrades as seen through > "LAMP VIEW" hole in top board as well as AD9 Photocell I/V going down from > 1.68 after ignition to 0.158 and lock is lost of course. Since all heating > and voltage diagnostics do stay within accepted limits I suspect some problem > within lamp enclosure (see attachment). Your help for further diagnosis and > any hints for obtaining spare parts would be appreciated very much. > Cheers Goetz > <PRS10 after > ignition.jpg><lamp-assy.jpg>_______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
