On Wed, 16 Mar 2011 13:50:49 +0000, N_Cook wrote:

boardjunkie1 wrote in message
...
On Mar 16, 5:01 am, "N_Cook" wrote:
Low frequency pops through the speaker, rather than high frequency
cracks. Would failure of 10,000uF 16V cap on DC balance to the heaters
leading to pops be consistent rather than high V HT cap failure (crack
noise).

Got a scope? Use it to find where the noise comes from....

&&&&

intermittant, once in an hour or so
By pop = both hands clasped with palms cupped, then clap crack = 2
fingers laid over the other palm , then clap

Have you subbed the valves?



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