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

40-180 Volume Issue
#1
Music 

I have a Philco 40-180 that I had restored electronically.  It plays well for awhile, but after a few minutes, volume decreases significantly (almost inaudible).  When I turn up the volume it sounds fine.  However, the volume will eventually go back to the original level (loud) and need to be turned down.  It cycles back and forth.  I think it could be related to the 84 tube.  When volume decreases, I can tap/move the tube a little and the sound will go back to normal for a short time.  I replaced the tube just to be sure, but see no change.  Also, when volume decreases, I can turn the set off and immediately turn it back on and this seems to reset the volume to the correct level.  But again, volume will continue to cycle.  I am hoping someone on this forum has insight into this issue.


Attached Files Image(s)
   
#2

I'd start by cleaning the tube socket. Spray some contact cleaner or DeOxit in the socket and work the tube in and out a few times. Might not be a bad idea to do this to all the tube sockets. That you can do without removing the chassis. Let the radio sit for at least 15 minutes before trying it to allow the cleaner to evaporate. If that doesn't clear up the problem, you'll have to pull the chassis and try spraying some cleaner into the volume control itself under the chassis.

These things may or may not clear up the problem but try the easy stuff first!

Greg V.
West Bend, WI
Member WARCI.org
#3

+1 what Greg said. The Loctal sockets and tube pins are a PITA! I picked up some dental brushes at the local pharmacy. I gently work a brush into the socket, spray a little contact cleaner (And I emphasize, a little!) then work the brush in circular and up and down motions. I try to clear problems trying anything that doesn't cost me first! Take care and BE HEALTHY! Gary

"Don't pity the dead, pity the living, above all, those living without love."
Professor Albus Dumbledore
Gary - Westland Michigan
#4

Thank you for the suggestions! I will try these first and see if that resolves the problem.




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 39-116 radio and remote
Hi Brad, Thanks so much for the info!  Do you happen to have the specs for the PT-86 transformer?  I did not find a lis...RichG — 04:32 PM
Philco 269 - 444 FIVE VALVE VERSION?
Thanks Arran; If your set has five tubes/valves then it could be an A537, V537, or a U527, then again it looks like s...ChasL0001 — 11:07 AM
Philco 29 or 45
29 chassis has a shadow meter while 45 chassis does not. Shadow meter is part no. 27 in the 29 schematic. compare it t...klondike98 — 10:32 AM
Philco 269 - 444 FIVE VALVE VERSION?
Sorry, Chas. Re the burns, I broke my first TV at the age of 3.  Between my electrical experiments :yikes: (My mom wa...MrFixr55 — 09:07 AM
Philco 41-221 Restored
Thanks for the compliment Richard. The tenite grille is original. A few of the horizontal slats were slightly warped so ...RodB — 08:44 AM
Philco 29 or 45
Hello, I have just received a Philco lowboy where the tube layout label in the cabinet says 29 or 45. There is no label ...dconant — 08:29 AM
Philco 41-221 Restored
Mr fixr, That is great news I would love to see repo grille !! I too have a very similar Philco but my cabinet has fab...radiorich — 08:22 AM
Philco 41-221 Restored
Hi Rod, I always tell people that my scars give me character.  :wink:   Great job on the radio.  Is the grille origi...MrFixr55 — 08:00 AM
Philco 269 - 444 FIVE VALVE VERSION?
It looks like the PENDD61 valve/tube must have failed, so someone replaced it with the EBC33, which is a double diode-tr...Arran — 04:29 AM
Philco 269 - 444 FIVE VALVE VERSION?
Hello Chas. Radiomuseum has information on both sets.  Thanks Gary, lots of good info there. Perhaps we'll ha...ChasL0001 — 02:23 AM

[-]
Who's Online
There are currently 3132 online users. [Complete List]
» 3 Member(s) | 3129 Guest(s)
AvatarAvatarAvatar

>