write a letter (real one) to their ceo & pres and if there is a engineering VP, only cost you a buck, fifty.
sometimes works -pete On Wed, Feb 16, 2011 at 12:11 PM, Brendan Minish <[email protected]> wrote: > Right, to follow up on my own email > > I took it apart > The lamp assembly has failed. > > In the PRS10 the lamp is exited by a strong RF field @ 150Mhz > this is generated by an MRF134 within the lamp package > > The failure mode was caused by the growth of a substantial tin whisker > within the lamp assembly which appears to have killed the MRF134. > > I made contact with SRS about purchasing a replacement lamp assembly but > since I bought it on the used market they are not willing sell me a > replacement lamp assembly. Frankly I am not terribly impressed with their > response on this. > > Does anyone on list have a 'donor' PRS10 that might have a good lamp > assembly that they would be willing to sell me ? > Perhaps someone on list has a commercial relationship with SRS and might be > able to assist me with purchasing it? > > Hoping someone can help out, My alternative is to attempt to source an > MRF134 and have a go at replacing it but there may be other damage in there > > regards > Brendan > > > > On 14/02/2011 18:53, Brendan Minish wrote: >> >> Hello all >> >> My SRS PRS10 ( http://www.thinksrs.com/products/PRS10.htm ) Rubidum >> frequency standard was power cycled a few days ago, since then it has >> not achived rubidium lock. >> I have tried a full rest and also further power cycles with no joy. >> >> The SRS RS232 application reports the following parameters that 'look >> wrong' >> ad3 (lamp drain ) 2.001 >> sd2 (fet voltage set ) 255 >> >> ad3 at 2 (Lamp drain volatge 20V) would appear to correspond with the Rb >> lamp discharge not beginning >> >> this unit is of course out of guarantee and came to me via Ebay about 5 >> years ago, is anyone on list familiar with troubleshooting these units >> who Might have some general ideas of how best to proceed with repairing >> the unit >> >> > > > -- > 73 > Brendan EI6IZ > > _______________________________________________ > 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.
