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

DELCO 4052 ACDC (was 43 tubes)
#10

Well...I decided not to do the reconstruction to bring the chassis in full agreement with the sch, considering some discrepancies seem to come from factory.

There are some problems after I soldered all that was not and weeded out tubes that were plain bad.

1. Voltages rise VERY slow. The voltage at the output xfmr first gets negative (!!! ) -10-12V or so, and only then starts going back. It lags the voltage for the field coil quite a bit though evntually becomes the same, 110V or so. It gakes 3 minutes maybe for the radio to get to hum.
I first thought of the diode that is dual one and creates two separately rectified voltages for the output and for the field coil, and indeed one half did not work so I replaced it.

2. Potential problem with the output 43 tube, though seems to work.

3. I am receiving a station, pretty loud, though at lower than max volume reception cuts out. Need to clean the volume pot.
4. But while the radio is quiet while not receiving it hums and distorts when is.
I suspect the radio is misaligned. Need to find the alignment procedure (don't remember if it is in the manual I have from the Radiomuseum.

Oh...and I am using a cap to lower the voltage, 8.2uF.

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.


Messages In This Thread
DELCO 4052 ACDC (was 43 tubes) - by morzh - 04-05-2016, 10:18 PM
RE: 43 tubes - by Phlogiston - 04-05-2016, 11:19 PM
RE: 43 tubes - by morzh - 04-05-2016, 11:43 PM
RE: 43 tubes - by Arran - 04-06-2016, 04:01 AM
RE: 43 tubes - by morzh - 04-06-2016, 08:19 AM
RE: 43 tubes - by Phlogiston - 04-06-2016, 11:15 AM
RE: 43 tubes - by Phlogiston - 04-06-2016, 03:17 PM
RE: 43 tubes - by morzh - 04-06-2016, 07:43 PM
RE: 43 tubes - by Phlogiston - 04-06-2016, 08:31 PM
RE: DELCO 4052 ACDC (was 43 tubes) - by morzh - 04-06-2016, 11:47 PM
RE: DELCO 4052 ACDC (was 43 tubes) - by morzh - 04-07-2016, 11:38 AM
RE: DELCO 4052 ACDC (was 43 tubes) - by morzh - 04-07-2016, 04:27 PM
RE: DELCO 4052 ACDC (was 43 tubes) - by morzh - 04-07-2016, 05:04 PM
RE: DELCO 4052 ACDC (was 43 tubes) - by morzh - 04-07-2016, 07:06 PM
RE: DELCO 4052 ACDC (was 43 tubes) - by morzh - 04-07-2016, 11:14 PM
RE: DELCO 4052 ACDC (was 43 tubes) - by Arran - 04-07-2016, 11:51 PM
RE: DELCO 4052 ACDC (was 43 tubes) - by morzh - 04-08-2016, 08:09 AM
RE: DELCO 4052 ACDC (was 43 tubes) - by TV MAN - 04-08-2016, 08:30 AM
RE: DELCO 4052 ACDC (was 43 tubes) - by Joe Rossi - 04-09-2016, 02:21 PM
RE: DELCO 4052 ACDC (was 43 tubes) - by morzh - 04-09-2016, 11:13 AM
RE: DELCO 4052 ACDC (was 43 tubes) - by morzh - 04-09-2016, 06:13 PM
RE: DELCO 4052 ACDC (was 43 tubes) - by morzh - 04-10-2016, 07:52 PM



Users browsing this thread: 7 Guest(s)
[-]
Recent Posts
Philco model 60
This is my thread on 60 from 2016. I had to rewind the osc coil, and I actually counted the turns and then rewound i...morzh — 03:34 PM
Philco model 60
Yes, Mark belongs to the same Michigan Antique Radio Club that I do. I suspect that the oscillator coil is in need of a ...Radios1340 — 03:10 PM
A Marconi model 86
Yeah. I am dreading the thought of what to do with all my consoles when I will no longer be able to move them around. I...morzh — 02:51 PM
1947 Silvertone 7086 Wire Recorder/Phono/Radio on YouTube
Cool gadget, Buzz. I took me a couple of second to undestand that that oscillating thing makes the wire to spool correc...morzh — 02:50 PM
A Marconi model 86
My back hurts already, you could build a house with all the wood. PaulPaul Philco322 — 02:49 PM
1947 Silvertone 7086 Wire Recorder/Phono/Radio on YouTube
Part 4 of this series now uploaded link below to anyone interested Buzz — 02:39 PM
Philco model 60
Welcome to the Phorum, Radios1340!  The oscillator coil on the 60 is a common culprit.  I just bought a 60B (June 1934) ...GarySP — 02:33 PM
Philco model 60
Yes, standard alignment procedure. I can get the minuscule tone to vary when adjusting the trimmers. But you almost have...Radios1340 — 01:40 PM
A Marconi model 86
An imposing-looking radio, for sure.morzh — 12:43 PM
Philco model 60
Model 60 struck again :lol: Welcome to the Phorum! Above is the article on Model 60. Could be of some use. Now...morzh — 12:38 PM

[-]
Who's Online
There are currently 10608 online users. [Complete List]
» 3 Member(s) | 10605 Guest(s)
AvatarAvatarAvatar

>