On 26/07/2010 17:54, Arfa Daily wrote:


"Ron" wrote in message
...
On 26/07/2010 16:39, N_Cook wrote:
Bad splitter-driver plate/anode 100K resistor, what goes bad with them?
Causing rustle noise in output. Partial crack? or something chemical.
I may
as well replace the 82K while I'm at it , but is there any point to
pre-emptively replacing all the HV droppers ?
Anyone happen to know the datecode structure for Mallory
electrolytics of
the 1980s?
say 4uF, 450VDC
marked
012022
235
8346B

1982 and 35/52 from 235 or 1983 and 46/52 from the last number?



Noisy 100k resistors is a common and well known problem with Fender
amps, change em all.

Ron



I reckon that goes for all amps with 12AX7 stages, doesn't it Ron ?

Arfa

Not sure, I know I`ve changed a lot in Fenders. on the newer models it's
such a lot of parping about getting the board out, it`s easiest to
change the lot.
Modern valve amps are so very noisy anyway, specially fenders - the
don't make em like they used to you know!

Ron

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