Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

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

Philco 38-2 Low Volume
#6

I managed to get some more time on this.

Hi Mr. FixIT,

The radio has been recapped. Many of the resistors were replaced. The tubes all checked good except the 6F6 they were marginal. I subbed in a good set and found no difference. As for the other tubes I don't have any others to try replacements. The secondary has one point grounded. Get .5 ohms from pin 8 to ground which is same as secondary of transformer. My radio is code 121 so we need to use the second schematic with all those X parts. The plate of the 2nd audio is 90 volts vs 135 per schematic. But the main schematic shows the plate resistor is 40K. The X parts schematic shows 99K which reads 101K. I did not replace that resistor. Maybe use 40K? That is one of the only two resistors in that third of the chassis I didn't change The plate of the phase inverter is 170 volts vs 180 volts per schematic. That is probably ok. I did not do anything with the aux jack you mentioned. Not 100 percent sure where to cut.

Mr. RodB,

The the three section candohm reads total of 139 ohms (96, 17, 25) vs schematic 88, 15, 23.Is that 96 ohm reading a problem? The 4 resistors on the 6F6s are pretty close to what they should be, not exact though (1K off). I don't understand with this: The 51k plate load should be pretty close to the cathode 50k. The schematic shows 51k plate and 5K screen. Please explain as I'm not sure what resistors. Is it the total of 85 and 87 resistors. If so they are close 51K cathode and 49K plate.

Thanks Guys,
Dan


Messages In This Thread
Philco 38-2 Low Volume - by dconant - 11-09-2024, 02:27 PM
RE: Philco 38-2 Low Volume - by morzh - 11-09-2024, 03:15 PM
RE: Philco 38-2 Low Volume - by MrFixr55 - 11-09-2024, 10:27 PM
RE: Philco 38-2 Low Volume - by RodB - 11-10-2024, 11:44 AM
RE: Philco 38-2 Low Volume - by dconant - 11-10-2024, 01:23 PM
RE: Philco 38-2 Low Volume - by dconant - 11-10-2024, 02:39 PM
RE: Philco 38-2 Low Volume - by morzh - 11-10-2024, 03:25 PM
RE: Philco 38-2 Low Volume - by MrFixr55 - 11-10-2024, 06:31 PM
RE: Philco 38-2 Low Volume - by RodB - 11-10-2024, 06:52 PM
RE: Philco 38-2 Low Volume - by morzh - 11-10-2024, 07:16 PM
RE: Philco 38-2 Low Volume - by dconant - 11-11-2024, 12:05 PM
RE: Philco 38-2 Low Volume - by RodB - 11-11-2024, 01:17 PM
RE: Philco 38-2 Low Volume - by dconant - 11-11-2024, 02:06 PM
RE: Philco 38-2 Low Volume - by dconant - 11-11-2024, 02:14 PM
RE: Philco 38-2 Low Volume - by RodB - 11-11-2024, 02:36 PM
RE: Philco 38-2 Low Volume - by dconant - 11-11-2024, 03:50 PM
RE: Philco 38-2 Low Volume - by dconant - 11-11-2024, 04:58 PM
RE: Philco 38-2 Low Volume - by RodB - 11-11-2024, 05:20 PM
RE: Philco 38-2 Low Volume - by RodB - 11-11-2024, 05:38 PM
RE: Philco 38-2 Low Volume - by dconant - 11-11-2024, 06:23 PM
RE: Philco 38-2 Low Volume - by RodB - 11-11-2024, 11:15 PM
RE: Philco 38-2 Low Volume - by dconant - 11-12-2024, 08:51 AM
RE: Philco 38-2 Low Volume - by RodB - 11-12-2024, 10:53 AM
RE: Philco 38-2 Low Volume - by morzh - 11-12-2024, 11:02 AM
RE: Philco 38-2 Low Volume - by dconant - 11-12-2024, 11:16 AM
RE: Philco 38-2 Low Volume - by morzh - 11-12-2024, 11:22 AM
RE: Philco 38-2 Low Volume - by RodB - 11-12-2024, 11:43 AM
RE: Philco 38-2 Low Volume - by morzh - 11-12-2024, 11:52 AM
RE: Philco 38-2 Low Volume - by dconant - 11-12-2024, 11:57 AM
RE: Philco 38-2 Low Volume - by morzh - 11-12-2024, 12:02 PM
RE: Philco 38-2 Low Volume - by dconant - 11-12-2024, 12:08 PM
RE: Philco 38-2 Low Volume - by MrFixr55 - 11-12-2024, 12:27 PM
RE: Philco 38-2 Low Volume - by morzh - 11-12-2024, 12:42 PM
RE: Philco 38-2 Low Volume - by dconant - 11-12-2024, 02:07 PM
RE: Philco 38-2 Low Volume - by morzh - 11-12-2024, 02:25 PM
RE: Philco 38-2 Low Volume - by dconant - 11-12-2024, 02:57 PM
RE: Philco 38-2 Low Volume - by MrFixr55 - 11-12-2024, 02:57 PM
RE: Philco 38-2 Low Volume - by MrFixr55 - 11-12-2024, 04:24 PM
RE: Philco 38-2 Low Volume - by dconant - 11-12-2024, 04:50 PM
RE: Philco 38-2 Low Volume - by MrFixr55 - 11-12-2024, 05:21 PM
RE: Philco 38-2 Low Volume - by dconant - 11-12-2024, 06:04 PM
RE: Philco 38-2 Low Volume - by dconant - 11-13-2024, 04:08 PM
RE: Philco 38-2 Low Volume - by morzh - 11-13-2024, 04:37 PM
RE: Philco 38-2 Low Volume - by dconant - 11-13-2024, 04:42 PM
RE: Philco 38-2 Low Volume - by morzh - 11-13-2024, 04:52 PM
RE: Philco 38-2 Low Volume - by dconant - 11-13-2024, 04:56 PM
RE: Philco 38-2 Low Volume - by morzh - 11-13-2024, 05:22 PM
RE: Philco 38-2 Low Volume - by dconant - 11-13-2024, 06:03 PM
RE: Philco 38-2 Low Volume - by MrFixr55 - 11-13-2024, 06:51 PM
RE: Philco 38-2 Low Volume - by MrFixr55 - 11-13-2024, 07:00 PM
RE: Philco 38-2 Low Volume - by dconant - 11-13-2024, 07:28 PM
RE: Philco 38-2 Low Volume - by morzh - 11-13-2024, 08:25 PM
RE: Philco 38-2 Low Volume - by dconant - 11-14-2024, 08:21 AM
RE: Philco 38-2 Low Volume - by dconant - 11-14-2024, 03:57 PM
RE: Philco 38-2 Low Volume - by morzh - 11-14-2024, 04:06 PM
RE: Philco 38-2 Low Volume - by dconant - 11-14-2024, 04:28 PM
RE: Philco 38-2 Low Volume - by dconant - 11-14-2024, 07:35 PM
RE: Philco 38-2 Low Volume - by morzh - 11-14-2024, 07:39 PM
RE: Philco 38-2 Low Volume - by dconant - 11-15-2024, 09:57 AM
RE: Philco 38-2 Low Volume - by morzh - 11-15-2024, 10:02 AM
RE: Philco 38-2 Low Volume - by RodB - 11-15-2024, 11:09 AM
RE: Philco 38-2 Low Volume - by dconant - 11-15-2024, 11:47 AM
RE: Philco 38-2 Low Volume - by RodB - 11-15-2024, 11:55 AM
RE: Philco 38-2 Low Volume - by dconant - 11-15-2024, 12:44 PM
RE: Philco 38-2 Low Volume - by dconant - 11-15-2024, 12:50 PM
RE: Philco 38-2 Low Volume - by morzh - 11-15-2024, 01:42 PM
RE: Philco 38-2 Low Volume - by RodB - 11-15-2024, 03:24 PM
RE: Philco 38-2 Low Volume - by morzh - 11-15-2024, 04:19 PM
RE: Philco 38-2 Low Volume - by dconant - 11-15-2024, 05:36 PM
RE: Philco 38-2 Low Volume - by MrFixr55 - 11-15-2024, 07:31 PM
RE: Philco 38-2 Low Volume - by RodB - 11-15-2024, 08:06 PM
RE: Philco 38-2 Low Volume - by dconant - 11-16-2024, 08:36 AM
RE: Philco 38-2 Low Volume - by radiorich - 11-16-2024, 12:12 PM
RE: Philco 38-2 Low Volume - by dconant - 11-17-2024, 10:55 AM
RE: Philco 38-2 Low Volume - by dconant - 11-21-2024, 11:03 AM
RE: Philco 38-2 Low Volume - by dconant - 12-04-2024, 08:41 AM



Users browsing this thread:
[-]
Recent Posts
Philco 42-345 Restoration/Repair
Hi OSanders, Look carefully at the band switch. Turn it slowly and "wiggle" it around the desired band. ...MrFixr55 — 12:33 AM
5U4 vs 5Z4 tubes
I think that RCA and GE introduced metal tubes in the USA in 1936.  I don't know if they were being made by RCA, GE or b...MrFixr55 — 11:20 PM
Philco 42-345 Restoration/Repair
Vlad95, Thank you for the stringing guides and wow there are so manyosanders0311 — 06:01 PM
5U4 vs 5Z4 tubes
A pre war Hallicrafters, and an early one too, very nice! 1936 is pretty early for metal tubes too, which would explain ...Arran — 05:58 PM
Philco 42-345 Restoration/Repair
Thanks Rod, "When you hear the background hiss and no station it usually indicates that the oscillator quit" ...osanders0311 — 05:52 PM
Philco 42-345 Restoration/Repair
RodB :beerchug:Vlad95 — 10:22 AM
Philco 42-345 Restoration/Repair
Vlad, you nailed it. Swiss and German roots.RodB — 09:54 AM
5U4 vs 5Z4 tubes
Well this is a Hallicrafters SX/9 circa 1936. No real issues so far although I dodged a real bullet with a cap that was...bridkarl — 07:59 AM
5U4 vs 5Z4 tubes
The pinout is the same but the 5U4 has a 3 amp filament, verses 2 amps or less on the 5Z4. I think that the pinout of a ...Arran — 12:04 AM
Philco 42-345 Restoration/Repair
By the way. osanders0311 Take a look here: Dial cord stringing Guides May be here you can fount correct string settin...Vlad95 — 11:15 PM

[-]
Who's Online
There are currently no members online.

>