Philco 90

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Philco 90

fields 100
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Posts: 228
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Joined: Dec 2013
City: Northbrook, IL

10-29-2014, 04:34 PM

(10-29-2014, 04:06 PM)morzh Wrote: Oh one more thing....your transformer may simply buzz. I have this in my 70. There is not much one can do about it short of disassembling, re-shimming, varnishing, clamping the shell (the latter I tried to no avail).

So, you are referring to the mechanical sound being simply heard from the wooden box or the one being amplified throughout the AF stage?
I tried the other 80, no improvement. However bumping up the first e-cap did decrease the hum I'd say by 35- 40 %.

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Messages In This Thread

Philco 90 - by fields 100 - 10-28-2014, 09:03 PM

RE: Philco 90 - by Phlogiston - 10-28-2014, 09:11 PM

RE: Philco 90 - by fields 100 - 10-28-2014, 09:24 PM

RE: Philco 90 - by morzh - 10-28-2014, 09:54 PM

RE: Philco 90 - by TV MAN - 10-29-2014, 01:53 PM

RE: Philco 90 - by morzh - 10-29-2014, 04:06 PM

RE: Philco 90 - by fields 100 - 10-29-2014, 04:34 PM

RE: Philco 90 - by morzh - 10-29-2014, 09:08 PM

RE: Philco 90 - by fields 100 - 10-29-2014, 09:29 PM

RE: Philco 90 - by morzh - 10-29-2014, 10:33 PM

RE: Philco 90 - by TV MAN - 11-02-2014, 07:01 PM

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