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

37-610 volume pot acting funny
#1

A few days ago, I went to the SARS spring meet in Atlanta. I traded my 38-62 for this 37-610. I told myself no more Philco's, but this is one I always liked. It was recapped before I got it. It has audio, but the volume control is very touchy. It only has one point where it's listenable - any lower and you can't here it at all, any higher, and it squeals like crazy. The cabinet it in pretty good shape, but the chassis is very dirty and needs lots of work. I tried spraying the pot, but it's sealed, and it made no difference.


Attached Files Image(s)
   

Slave to an RCA Victor CTC-25
#2

Hi Dave,
A few things come to mind. Open volume control. To check disconnect and use an analog ohm meter connected to the center post and one of the ends. Set meter to it's highest scale. Needle of the meter should move nice and smooth. If needle jumps around you need a new pot.
Tube shields in place??
Could the previous recap job has issues. Wrong value cap in the wrong place or wire placement after recap could be causing your set to oscillate.

CTC-25 Glutton for punishment!!!!! My parents had a CTC-7 when I was a kid back in '59. Used it till the early 70's when they got a Sony Trinatron.

Terry
#3

Next time I'm at the radio club I'll check those things. The CTC-25 has been a good little TV. It has not yet given me any trouble and I've had it since February. The two varmints are the CTC-40 and the Zenith 25DC56. I think I finally got the Zenith ironed out though. With the help of some fellow TV collectors.

Slave to an RCA Victor CTC-25
#4

I've got a RCA 6T65 (KCS-47A) from '50 that I fixed up about 10 or 15 yrs ago.
https://www.flickr.com/photos/42774321@N...ateposted/
Evey once in a while something will give up the ghost and it will require some service.
Last go around it was the vert osc transformer, luckily I've got a few parts sets.

Terry




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
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
Zenith H725
Ed; One material that I have seen, but never tried for this was material for making exhaust gaskets, it's similar to ...Arran — 11:42 PM
Zenith H725
I just remembered, I have some hi temp silicone rubber material which could do the trick. Or a piece of FR4 laminate. Th...EdHolland — 08:39 PM
Zenith H725
The PSU filter cap arrived today (thank you USPS!) so I will work on that later. Meanwhile, I have the dial, speaker...EdHolland — 06:42 PM
Philco 610B oscillator wiring
Thanks Terry. After checking my notes I think I recorded about -10v at the 6A7 G4/control grid. The screen grid (G3 &...Tubester — 05:59 PM
The list of my radio & TV collection!
Magical chords of forgotten melodies, old nostalgic music on an old radio... Saturday night blues on the Mid-Waves on an...RadioSvit — 12:20 PM
Philco 42-345 Restoration/Repair
Thank you MrFixr55 the issue with this radio is that the internal coil antenna is missing and there was a wire in its pl...osanders0311 — 11:34 AM
Philco 610B oscillator wiring
Regarding the oscillator circuit which is comprised of the 6A7's cathode, control grid, and screen grid. These elements ...Radioroslyn — 10:33 AM
Philco 42-345 Restoration/Repair
Hi OSanders, First off, welcome to the Philco Phorum where Phine Phamily-Phriendly Pholks Phull of Philco Phacts and P...MrFixr55 — 08:41 AM

[-]
Who's Online
There are currently 2397 online users. [Complete List]
» 2 Member(s) | 2395 Guest(s)
AvatarAvatar

>