1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration

Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Linear Mode
Philco 41-280 60 cycle hum problem Need Help
jeremyfries
Junior Member
**
Posts: 11
Threads: 3
Joined: Jun 2010
#3

07-01-2010, 12:37 PM
I am only just learning myself and am by no means an expert, so please take what I say with a grain of salt....

From what I understand, the rule of thumb is that any electrolytic condenser that meets or exceeds the capacitance (uf) and voltage (v) rating is fine, and for other condensers the ratings should be as called for in the schematics or exceed by less than 20%. (Someone please correct me if I'm wrong!) In other words, I don't believe that the problem is with the existing condenser ratings.

I'd suspect that there is an open in one of the condensers (which would be odd considering that they all look new in the pics as far as I can see on my screen) or maybe that there is a ground issue?

I'm interested to hear what others have to say so I can learn from this one myself! Icon_biggrin
Find
« Next Oldest | Next Newest »
Thread Closed


Messages In This Thread
Re: Philco 41-280 60 cycle hum problem Need Help - by jeremyfries - 07-01-2010, 12:37 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 42-345 Restoration/Repair
Yes, 57 is an electrolytic cap that should be 12 mfd 400 volts according to the parts list from the Phorum library schem...RodB — 06:01 PM
Philco 42-345 Restoration/Repair
Looks like if I am reading it correctly it looks like the silver capacitor#57 that appears to be a replacement is of a l...osanders0311 — 05:09 PM
Philco model 38 code 121 not receiving signal.
Thanks Arran. Yeah this plastic is pretty thin. It's a little thinner than the original stuff. It kinda reminds me of p...Stormlord5500 — 04:37 PM
Testing a speaker and output transformer Trutone A2-G
The equivalent of one short turn is basically the same as that of a shorted load. If it is the primary's turn, then the ...morzh — 03:53 PM
Testing a speaker and output transformer Trutone A2-G
I've never had an output transformer become shorted, the failure mode is usually an open primary, or in a center tapped ...Arran — 03:52 PM
Philco model 38 code 121 not receiving signal.
As long as the plastic sheeting isn't too thick, I think that the thickness of photographic film would be just about rig...Arran — 03:19 PM
Philco model 38 code 121 not receiving signal.
Well why not! :lol:Stormlord5500 — 03:14 PM
Philco model 38 code 121 not receiving signal.
Good luck next thing you know you will be winding coils just for the fun of it. DavidDavid — 11:29 AM
Testing a speaker and output transformer Trutone A2-G
morzh Short-circuited turns can be considered as a half-dead transformer. But on this case transformer will hot and s...Vlad95 — 11:01 AM
Testing a speaker and output transformer Trutone A2-G
I am not sure how a transformer could be weak. It could be inadequate, but only when you replace the original with somet...morzh — 09:56 AM

[-]
Who's Online
There are currently 2262 online users. [Complete List]
» 2 Member(s) | 2260 Guest(s)
AvatarAvatar

>
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration