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

Philco 38-4 low volume
#1

Hello! I have a question regarding my 38-4 restoration.  I have spent a good long time restoring this beautiful radio and am on the threshold of completion.  I have replaced all the caps and resistors, checked the tubes to the best of my ability.  I haven't yet had the speaker repaired, but the cone does have a large tear.  I would expect the speaker to still function as it should, although the sound quality will be poor and distorted.  After cleaning the whole chassis and plugging everything back up, I turn the set on and a couple of stations come in clearly.  But even with the volume control all the way up, the volume level is quite low.  Is there something that I am missing that may cause this?  I know that I need to work more on my antenna, but the stations that come in clearly should still have some volume to them, correct?  My tube checker hasn't been checked out for a number of years, but all of my tubes seem to be reading about the same.
Thoughts?  Thanks in advance.

ALSO, on this 38-4 model, what does the middle 2-position control do? Obviously the left control is on/band selector, and the right control is volume, but I am not sure about the center knob. Thanks


Attached Files Image(s)
           
#2

Welcome to the Phorum!
Icon_wave

I moved this thread into the electronic restoration section. Nice job on your radio!
#3

Hi Chris,

Welcome to the Phorum!

I believe the center knob is the band switch, the left one is the tone control.

Have you checked the alignment? Poor alignment could cause low volume. Also, double check your work, make sure all the capacitors you replaced are the correct value and there are no wiring errors.

Steve

M R Radios   C M Tubes
#4

Especially IF alignment. While the rest of them will simply result in incorrect dial position, the IF misalignment will rob you of the volume.

People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.




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 2371 online users. [Complete List]
» 2 Member(s) | 2369 Guest(s)
AvatarAvatar

>