[time-nuts] 10811 Repair - EUREKA!

Dr Bruce Griffiths bruce.griffiths at xtra.co.nz
Tue Jan 23 15:56:49 EST 2007


Jason Rabel wrote:
> I'm not sure what happened, if there was a short before or I just missed it
> because the signal was so low, but now I'm getting a signal!
>
> It is extremely weak, only about 30mV p-p w/50 Ohm termination. Any thoughts
> (besides the AGC circuit)?
>
> I tried to adjust R6, but it was already near maxed out. The manual says:
>
> If the R6 adjustment isn't effective, you should suspect the AGC circuitry
> (Q3, CR4, CR5, C5, C6, R5, R6, R7, or Q1).
>
> This kind of sucks because working on that middle board is not fun. I guess
> I'll have to disconnect the thermistor & crystal so I can pull it out from
> the metal shell.
>
> I *thought* I saw a parts list somewhere, but I'm looking through the manual
> again and don't see it. The schematic on page 64 (Adobe pg 72) doesn't give
> info except on capacitors.
>
> At least I know it isn't dead, so that's a positive. :)
>
>
> Jason
>
>
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>   
Jason

The 10811 service manual contains a complete parts list on pages 32-34.

Bruce



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