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Crackling nose right upon powerup is no good. Pull All tubes out, including the rectifier and see if it persists. Locate, fix.
Could be caps, could be..anything...transformer.
Field coil should get warm. Not unbearably hot. But quite warm, it dissipates rom a few to 10-plus Watts in various radios.
Messages In This Thread
RE: 41-300x - by morzh - 06-22-2014, 08:48 PM
Users browsing this thread: 4 Guest(s)
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Philco 630csx power cord
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I posted this on FB but knowing that not all of us use social media, it seemed sensible to ask my question here.
I r...Tynwald — 08:07 PM |
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At last, got this working well. Impressed has really nice reception and tone. Had a bad connection on one of the capaci...rogerh — 07:44 PM |
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Or you could just square the current :lol:
As for the values, they are dependent on the 1 or 2-speaker system.
The...morzh — 05:46 PM |
Philco 91 Restore Code ??
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If you know the fc resistance you can use 120 ma nominal current through the resistor to get the voltage drop then calcu...RodB — 05:21 PM |
Philco 91 Restore Code ??
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Thanks Mike. I at least know why it is there if I don't fully understand it. I see where you talk about a cap and resist...dconant — 04:49 PM |
Philco 91 Restore Code ??
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Well, this cap you showed cannot possibly, due to the way it is constructed, be 1000pF (0.001).
It can be in tens of pF....morzh — 03:13 PM |
Philco 91 Restore Code ??
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I have two schematics for this radio one shows the 47 block (126-226) and the other (121-221) does not. My radio does no...dconant — 02:32 PM |
Philco 91 Restore Code ??
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No, that cannot be the 47.
The 47 is a regular backelite block cap. Look at the chassis picture, it is shown there. Rig...morzh — 01:45 PM |
Philco 91 Restore Code ??
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I have changed the title of this thread from Philco 91 Schematic.
I have gone through most of the cap replacements. I...dconant — 01:26 PM |
462ron
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Here is an online transistor substitution site…
Ron462ron — 08:44 AM |
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