Interesting so it looks like what ever the standoff material is out gassing. Regards Paul WB8TSL
On Sun, Feb 22, 2015 at 2:57 PM, Hans Holzach <[email protected]> wrote: > hi jürg, > > dispite the fact that my prs-10 has been up and running for only about 2 > years (according to FC!?), the lamp assembly looks pretty ugly (see > picture) as if it was overheated quite a bit. i bought the unit from ebay, > so i have no idea under what conditions it had spent its life before i got > it. the unit works, but the frequency is not as stable as i expected. > > https://farm9.staticflickr.com/8652/16589402796_3a2e1e66c9_o.jpg > > in my opinion the breakout board should work with your second unit. but > you have to enable the pps PLL (instruction is: PL1). check the manual, > page 33 ff., also to set the time constant. > > regards, > hans > > > > > > > Fellow time nuts. I have two SRS PRS10 Rb’s that I did purchase 10 years > ago. Both have been working for the last nine years. One did fail last year > and I finally got around to looking at it in the last two weeks. The > attached picture shows the trauma to the lamp board. I do not understand > the corrosion since it has been in a very controlled environment in my > basement. > > Since the failed unit does have the 1 pps loop control I moved the > processor board to the still working unit. Did not work. Does it take more > than just moving that one board to get 1 pps loop control? > > Second any ideas as to what may have happened to the lamp heater board. Any > recommendations? Plan on making a replacement board. Have a power FET > MRF134 > > Thanks > > > _______________________________________________ > 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.
