Get the manual because if it's been off a long time the RB migrates out of the reservoir and coats the bulb so light does not escape
There is a built in 'cold trap' which is used to return the Rb to the reservoir Using this is version specific and you need a good power supply as you can damage the Rb assembly if done incorrectly Luciano's recommended steps should be checked first though > On Feb 20, 2017, at 1:47 AM, timeok <[email protected]> wrote: > > > Hi Scott, > I have never find a photodiode faulty. When applied 20 volts to the lamp it > should come on within about 10 seconds, and the PHOTO I meter on the panel > will be between 20 and 50. If this does not happen the most probable failure > is the resistance R1 on the lamp board (1330ohm 2W). In this case, I suggest > you replace it with two 2700-ohm 1W resistors in parallel. > > Other faults that I found were: the broken transistor Q1 and the exciter > coil detached from one side, but these failure are very rare. > let me know, > regards, > Luciano > > There is 20 VDC feeding the RVFS lamp oscillator. > > But, there is no current coming from the photodiode. (Maybe a few picoamps > of dark current, certainly not the expected ~50 microamps of DC, and no > 137/234 Hz signals). > > It seems the most likely problem is that the Rb lamp is not coming on. > Maybe possible that the photodiode is faulty, or a broken wire, etc. > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
