Posts: 3,148
Threads: 56
Joined: Apr 2011
City: Lexington, KY
(04-22-2019, 01:36 PM)morzh Wrote: ........... I think my drop power resistor (the one mounted proud on top the chassis, riveted to it) has the leakage which develops when it is powered up. I desoldered the wire going to the tube and left the wire going to the filter, and replaced it with 82 Ohm 5W resistor. The hum got greatly reduced. (I cannot unsolder it altogether as it houses the second and third resistive sections of 970 Ohms). So I think I will replace the whole thing and see if it gets completely cured.........
Are you referring to the candohm resistor? I have read in this model they can develop a resistance to the chassis that causes a hum.
John KK4ZLF
Lexington, KY
"illegitimis non carborundum"
Messages In This Thread
RE: Another 7G605 Zenith TO - by Eliot Ness - 04-22-2019, 02:34 PM
Users browsing this thread: 1 Guest(s)
|
Recent Posts
|
Need to purchase some accessories for restoration of my Old Philco Radio
|
Hi Paulo,
Welcome to the Philco Phorum.
I can see why you want to find good reproduction parts. That is a bea...MrFixr55 — 11:10 PM |
HiFi (Chifi) tube amp build - but my own design.
|
Tim,
I have some bakelite sockets in my work shop that I can dig up. I believe quite a few are NOS. I will take photo...RodB — 10:03 PM |
Philco 610B oscillator wiring
|
> The cathode as noted is wired directly to the ground side of the heater filament for that tube, not to the #17 and ...Radioroslyn — 08:12 PM |
HiFi (Chifi) tube amp build - but my own design.
|
Tim;
I noticed your post a little late, but I would take one of the junk sockets and try to break a chunk out of it wi...Arran — 08:07 PM |
Need to purchase some accessories for restoration of my Old Philco Radio
|
Here is a list of resources found in our online library that you might find useful. Mike's Gobs of Knobs email addres...klondike98 — 01:46 PM |
First Radio restoration
|
Hi Tubeman,
Welcome to the Philco Phorum. Phamily Phriendly Pfun with Phine Pholks Phull of Philco Phacts. (See a p...MrFixr55 — 12:33 PM |
First Radio restoration
|
You could post in the WANTED ADs section here on the Phorum and see if anyone has an RF generator that they want to sell...klondike98 — 11:55 AM |
Zenith H725
|
Good ideas, thank you Arrange and Rich. I have the adhesive aluminum foil already and can try that immediately.
More ...EdHolland — 10:18 AM |
Graphics for majestic 1050 dial glass.
|
Murf;
I found this thread on the ARF, the first photo has a pretty good view of the dial glass.
Regards
ArranArran — 01:12 AM |
Zenith H725
|
hello Ed,
how about that speacial tape used for ducting it's like foil or how about thin piece of
aluminum roof flash...radiorich — 12:19 AM |
Who's Online
|
There are currently no members online. |
|

|